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by brian
clean slate |
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/* Copyright (C) 2000-2004 MySQL AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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/* drop and alter of tables */
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#include "mysql_priv.h" |
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#include <hash.h> |
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#include <myisam.h> |
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#include <my_dir.h> |
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#include "sql_show.h" |
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int creating_table= 0; // How many mysql_create_table are running |
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const char *primary_key_name="PRIMARY"; |
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static bool check_if_keyname_exists(const char *name,KEY *start, KEY *end); |
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static char *make_unique_key_name(const char *field_name,KEY *start,KEY *end); |
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static int copy_data_between_tables(TABLE *from,TABLE *to, |
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List<Create_field> &create, bool ignore, |
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uint order_num, ORDER *order, |
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ha_rows *copied,ha_rows *deleted, |
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enum enum_enable_or_disable keys_onoff, |
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bool error_if_not_empty); |
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static bool prepare_blob_field(THD *thd, Create_field *sql_field); |
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static bool check_engine(THD *, const char *, HA_CREATE_INFO *); |
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static int |
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mysql_prepare_create_table(THD *thd, HA_CREATE_INFO *create_info, |
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Alter_info *alter_info, |
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bool tmp_table, |
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uint *db_options, |
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handler *file, KEY **key_info_buffer, |
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uint *key_count, int select_field_count); |
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static bool |
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mysql_prepare_alter_table(THD *thd, TABLE *table, |
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HA_CREATE_INFO *create_info, |
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Alter_info *alter_info); |
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#ifndef DBUG_OFF
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/* Wait until we get a 'mysql_kill' signal */
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static void wait_for_kill_signal(THD *thd) |
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{
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while (thd->killed == 0) |
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sleep(1); |
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// Reset signal and continue as if nothing happend
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thd->killed= THD::NOT_KILLED; |
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}
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#endif
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/*
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Translate a file name to a table name (WL #1324).
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SYNOPSIS
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filename_to_tablename()
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from The file name in my_charset_filename.
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to OUT The table name in system_charset_info.
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to_length The size of the table name buffer.
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RETURN
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Table name length.
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*/
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uint filename_to_tablename(const char *from, char *to, uint to_length) |
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{
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uint errors; |
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uint res; |
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DBUG_ENTER("filename_to_tablename"); |
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DBUG_PRINT("enter", ("from '%s'", from)); |
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if (!memcmp(from, tmp_file_prefix, tmp_file_prefix_length)) |
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{
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/* Temporary table name. */
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res= (strnmov(to, from, to_length) - to); |
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}
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else
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{
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res= strconvert(&my_charset_filename, from, |
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system_charset_info, to, to_length, &errors); |
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if (errors) // Old 5.0 name |
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{
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res= (strxnmov(to, to_length, MYSQL50_TABLE_NAME_PREFIX, from, NullS) - |
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to); |
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sql_print_error("Invalid (old?) table or database name '%s'", from); |
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/*
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TODO: add a stored procedure for fix table and database names,
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and mention its name in error log.
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*/
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}
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}
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DBUG_PRINT("exit", ("to '%s'", to)); |
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DBUG_RETURN(res); |
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}
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/*
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Translate a table name to a file name (WL #1324).
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SYNOPSIS
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tablename_to_filename()
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from The table name in system_charset_info.
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to OUT The file name in my_charset_filename.
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to_length The size of the file name buffer.
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RETURN
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File name length.
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*/
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uint tablename_to_filename(const char *from, char *to, uint to_length) |
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{
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uint errors, length; |
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DBUG_ENTER("tablename_to_filename"); |
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DBUG_PRINT("enter", ("from '%s'", from)); |
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if (from[0] == '#' && !strncmp(from, MYSQL50_TABLE_NAME_PREFIX, |
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MYSQL50_TABLE_NAME_PREFIX_LENGTH)) |
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DBUG_RETURN((uint) (strmake(to, from+MYSQL50_TABLE_NAME_PREFIX_LENGTH, |
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to_length-1) - |
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(from + MYSQL50_TABLE_NAME_PREFIX_LENGTH))); |
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length= strconvert(system_charset_info, from, |
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&my_charset_filename, to, to_length, &errors); |
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if (check_if_legal_tablename(to) && |
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length + 4 < to_length) |
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{
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memcpy(to + length, "@@@", 4); |
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length+= 3; |
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}
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DBUG_PRINT("exit", ("to '%s'", to)); |
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DBUG_RETURN(length); |
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}
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/*
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Creates path to a file: mysql_data_dir/db/table.ext
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SYNOPSIS
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build_table_filename()
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buff Where to write result in my_charset_filename.
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This may be the same as table_name.
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bufflen buff size
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db Database name in system_charset_info.
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table_name Table name in system_charset_info.
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ext File extension.
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flags FN_FROM_IS_TMP or FN_TO_IS_TMP or FN_IS_TMP
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table_name is temporary, do not change.
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NOTES
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Uses database and table name, and extension to create
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a file name in mysql_data_dir. Database and table
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names are converted from system_charset_info into "fscs".
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Unless flags indicate a temporary table name.
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'db' is always converted.
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'ext' is not converted.
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The conversion suppression is required for ALTER TABLE. This
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statement creates intermediate tables. These are regular
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(non-temporary) tables with a temporary name. Their path names must
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be derivable from the table name. So we cannot use
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build_tmptable_filename() for them.
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RETURN
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path length
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*/
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uint build_table_filename(char *buff, size_t bufflen, const char *db, |
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const char *table_name, const char *ext, uint flags) |
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{
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char dbbuff[FN_REFLEN]; |
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char tbbuff[FN_REFLEN]; |
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DBUG_ENTER("build_table_filename"); |
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DBUG_PRINT("enter", ("db: '%s' table_name: '%s' ext: '%s' flags: %x", |
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db, table_name, ext, flags)); |
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if (flags & FN_IS_TMP) // FN_FROM_IS_TMP | FN_TO_IS_TMP |
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strnmov(tbbuff, table_name, sizeof(tbbuff)); |
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else
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VOID(tablename_to_filename(table_name, tbbuff, sizeof(tbbuff))); |
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VOID(tablename_to_filename(db, dbbuff, sizeof(dbbuff))); |
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char *end = buff + bufflen; |
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/* Don't add FN_ROOTDIR if mysql_data_home already includes it */
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char *pos = strnmov(buff, mysql_data_home, bufflen); |
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int rootdir_len= strlen(FN_ROOTDIR); |
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if (pos - rootdir_len >= buff && |
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memcmp(pos - rootdir_len, FN_ROOTDIR, rootdir_len) != 0) |
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pos= strnmov(pos, FN_ROOTDIR, end - pos); |
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pos= strxnmov(pos, end - pos, dbbuff, FN_ROOTDIR, NullS); |
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#ifdef USE_SYMDIR
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unpack_dirname(buff, buff); |
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pos= strend(buff); |
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#endif
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pos= strxnmov(pos, end - pos, tbbuff, ext, NullS); |
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DBUG_PRINT("exit", ("buff: '%s'", buff)); |
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DBUG_RETURN(pos - buff); |
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}
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/*
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Creates path to a file: mysql_tmpdir/#sql1234_12_1.ext
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SYNOPSIS
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build_tmptable_filename()
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thd The thread handle.
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buff Where to write result in my_charset_filename.
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bufflen buff size
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NOTES
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Uses current_pid, thread_id, and tmp_table counter to create
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a file name in mysql_tmpdir.
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RETURN
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path length
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*/
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uint build_tmptable_filename(THD* thd, char *buff, size_t bufflen) |
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{
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DBUG_ENTER("build_tmptable_filename"); |
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char *p= strnmov(buff, mysql_tmpdir, bufflen); |
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my_snprintf(p, bufflen - (p - buff), "/%s%lx_%lx_%x%s", |
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tmp_file_prefix, current_pid, |
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thd->thread_id, thd->tmp_table++, reg_ext); |
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if (lower_case_table_names) |
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{
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/* Convert all except tmpdir to lower case */
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my_casedn_str(files_charset_info, p); |
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}
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uint length= unpack_filename(buff, buff); |
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DBUG_PRINT("exit", ("buff: '%s'", buff)); |
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DBUG_RETURN(length); |
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}
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/*
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--------------------------------------------------------------------------
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MODULE: DDL log
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-----------------
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This module is used to ensure that we can recover from crashes that occur
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in the middle of a meta-data operation in MySQL. E.g. DROP TABLE t1, t2;
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We need to ensure that both t1 and t2 are dropped and not only t1 and
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also that each table drop is entirely done and not "half-baked".
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To support this we create log entries for each meta-data statement in the
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ddl log while we are executing. These entries are dropped when the
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operation is completed.
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At recovery those entries that were not completed will be executed.
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There is only one ddl log in the system and it is protected by a mutex
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and there is a global struct that contains information about its current
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state.
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History:
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First version written in 2006 by Mikael Ronstrom
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--------------------------------------------------------------------------
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*/
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struct st_global_ddl_log |
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{
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/*
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We need to adjust buffer size to be able to handle downgrades/upgrades
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where IO_SIZE has changed. We'll set the buffer size such that we can
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handle that the buffer size was upto 4 times bigger in the version
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that wrote the DDL log.
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*/
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char file_entry_buf[4*IO_SIZE]; |
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char file_name_str[FN_REFLEN]; |
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char *file_name; |
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DDL_LOG_MEMORY_ENTRY *first_free; |
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DDL_LOG_MEMORY_ENTRY *first_used; |
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uint num_entries; |
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File file_id; |
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uint name_len; |
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uint io_size; |
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bool inited; |
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bool do_release; |
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bool recovery_phase; |
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st_global_ddl_log() : inited(false), do_release(false) {} |
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};
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st_global_ddl_log global_ddl_log; |
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pthread_mutex_t LOCK_gdl; |
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#define DDL_LOG_ENTRY_TYPE_POS 0
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#define DDL_LOG_ACTION_TYPE_POS 1
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#define DDL_LOG_PHASE_POS 2
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#define DDL_LOG_NEXT_ENTRY_POS 4
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#define DDL_LOG_NAME_POS 8
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#define DDL_LOG_NUM_ENTRY_POS 0
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#define DDL_LOG_NAME_LEN_POS 4
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#define DDL_LOG_IO_SIZE_POS 8
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/*
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Read one entry from ddl log file
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SYNOPSIS
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read_ddl_log_file_entry()
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entry_no Entry number to read
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RETURN VALUES
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TRUE Error
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FALSE Success
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*/
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static bool read_ddl_log_file_entry(uint entry_no) |
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{
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bool error= FALSE; |
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File file_id= global_ddl_log.file_id; |
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uchar *file_entry_buf= (uchar*)global_ddl_log.file_entry_buf; |
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uint io_size= global_ddl_log.io_size; |
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DBUG_ENTER("read_ddl_log_file_entry"); |
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if (my_pread(file_id, file_entry_buf, io_size, io_size * entry_no, |
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MYF(MY_WME)) != io_size) |
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error= TRUE; |
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DBUG_RETURN(error); |
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}
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/*
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Write one entry from ddl log file
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SYNOPSIS
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write_ddl_log_file_entry()
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entry_no Entry number to read
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RETURN VALUES
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TRUE Error
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FALSE Success
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*/
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static bool write_ddl_log_file_entry(uint entry_no) |
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{
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bool error= FALSE; |
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File file_id= global_ddl_log.file_id; |
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char *file_entry_buf= (char*)global_ddl_log.file_entry_buf; |
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DBUG_ENTER("write_ddl_log_file_entry"); |
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if (my_pwrite(file_id, (uchar*)file_entry_buf, |
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IO_SIZE, IO_SIZE * entry_no, MYF(MY_WME)) != IO_SIZE) |
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error= TRUE; |
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DBUG_RETURN(error); |
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}
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/*
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Write ddl log header
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SYNOPSIS
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write_ddl_log_header()
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RETURN VALUES
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TRUE Error
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FALSE Success
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*/
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static bool write_ddl_log_header() |
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{
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uint16 const_var; |
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bool error= FALSE; |
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DBUG_ENTER("write_ddl_log_header"); |
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int4store(&global_ddl_log.file_entry_buf[DDL_LOG_NUM_ENTRY_POS], |
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global_ddl_log.num_entries); |
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const_var= FN_LEN; |
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int4store(&global_ddl_log.file_entry_buf[DDL_LOG_NAME_LEN_POS], |
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(ulong) const_var); |
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const_var= IO_SIZE; |
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int4store(&global_ddl_log.file_entry_buf[DDL_LOG_IO_SIZE_POS], |
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(ulong) const_var); |
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if (write_ddl_log_file_entry(0UL)) |
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{
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sql_print_error("Error writing ddl log header"); |
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DBUG_RETURN(TRUE); |
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}
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VOID(sync_ddl_log()); |
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DBUG_RETURN(error); |
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}
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398 |
||
399 |
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400 |
/*
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401 |
Create ddl log file name
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SYNOPSIS
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403 |
create_ddl_log_file_name()
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404 |
file_name Filename setup
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405 |
RETURN VALUES
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406 |
NONE
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*/
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408 |
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409 |
static inline void create_ddl_log_file_name(char *file_name) |
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410 |
{
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strxmov(file_name, mysql_data_home, "/", "ddl_log.log", NullS); |
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}
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413 |
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414 |
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/*
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Read header of ddl log file
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417 |
SYNOPSIS
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418 |
read_ddl_log_header()
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RETURN VALUES
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420 |
> 0 Last entry in ddl log
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0 No entries in ddl log
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DESCRIPTION
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423 |
When we read the ddl log header we get information about maximum sizes
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424 |
of names in the ddl log and we also get information about the number
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425 |
of entries in the ddl log.
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426 |
*/
|
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427 |
||
428 |
static uint read_ddl_log_header() |
|
429 |
{
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430 |
char *file_entry_buf= (char*)global_ddl_log.file_entry_buf; |
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431 |
char file_name[FN_REFLEN]; |
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432 |
uint entry_no; |
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433 |
bool successful_open= FALSE; |
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434 |
DBUG_ENTER("read_ddl_log_header"); |
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435 |
||
436 |
create_ddl_log_file_name(file_name); |
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437 |
if ((global_ddl_log.file_id= my_open(file_name, |
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438 |
O_RDWR | O_BINARY, MYF(0))) >= 0) |
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439 |
{
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440 |
if (read_ddl_log_file_entry(0UL)) |
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441 |
{
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442 |
/* Write message into error log */
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443 |
sql_print_error("Failed to read ddl log file in recovery"); |
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444 |
}
|
|
445 |
else
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|
446 |
successful_open= TRUE; |
|
447 |
}
|
|
448 |
entry_no= uint4korr(&file_entry_buf[DDL_LOG_NUM_ENTRY_POS]); |
|
449 |
global_ddl_log.name_len= uint4korr(&file_entry_buf[DDL_LOG_NAME_LEN_POS]); |
|
450 |
if (successful_open) |
|
451 |
{
|
|
452 |
global_ddl_log.io_size= uint4korr(&file_entry_buf[DDL_LOG_IO_SIZE_POS]); |
|
453 |
DBUG_ASSERT(global_ddl_log.io_size <= |
|
454 |
sizeof(global_ddl_log.file_entry_buf)); |
|
455 |
}
|
|
456 |
else
|
|
457 |
{
|
|
458 |
entry_no= 0; |
|
459 |
}
|
|
460 |
global_ddl_log.first_free= NULL; |
|
461 |
global_ddl_log.first_used= NULL; |
|
462 |
global_ddl_log.num_entries= 0; |
|
463 |
VOID(pthread_mutex_init(&LOCK_gdl, MY_MUTEX_INIT_FAST)); |
|
464 |
global_ddl_log.do_release= true; |
|
465 |
DBUG_RETURN(entry_no); |
|
466 |
}
|
|
467 |
||
468 |
||
469 |
/*
|
|
470 |
Read a ddl log entry
|
|
471 |
SYNOPSIS
|
|
472 |
read_ddl_log_entry()
|
|
473 |
read_entry Number of entry to read
|
|
474 |
out:entry_info Information from entry
|
|
475 |
RETURN VALUES
|
|
476 |
TRUE Error
|
|
477 |
FALSE Success
|
|
478 |
DESCRIPTION
|
|
479 |
Read a specified entry in the ddl log
|
|
480 |
*/
|
|
481 |
||
482 |
bool read_ddl_log_entry(uint read_entry, DDL_LOG_ENTRY *ddl_log_entry) |
|
483 |
{
|
|
484 |
char *file_entry_buf= (char*)&global_ddl_log.file_entry_buf; |
|
485 |
uint inx; |
|
486 |
uchar single_char; |
|
487 |
DBUG_ENTER("read_ddl_log_entry"); |
|
488 |
||
489 |
if (read_ddl_log_file_entry(read_entry)) |
|
490 |
{
|
|
491 |
DBUG_RETURN(TRUE); |
|
492 |
}
|
|
493 |
ddl_log_entry->entry_pos= read_entry; |
|
494 |
single_char= file_entry_buf[DDL_LOG_ENTRY_TYPE_POS]; |
|
495 |
ddl_log_entry->entry_type= (enum ddl_log_entry_code)single_char; |
|
496 |
single_char= file_entry_buf[DDL_LOG_ACTION_TYPE_POS]; |
|
497 |
ddl_log_entry->action_type= (enum ddl_log_action_code)single_char; |
|
498 |
ddl_log_entry->phase= file_entry_buf[DDL_LOG_PHASE_POS]; |
|
499 |
ddl_log_entry->next_entry= uint4korr(&file_entry_buf[DDL_LOG_NEXT_ENTRY_POS]); |
|
500 |
ddl_log_entry->name= &file_entry_buf[DDL_LOG_NAME_POS]; |
|
501 |
inx= DDL_LOG_NAME_POS + global_ddl_log.name_len; |
|
502 |
ddl_log_entry->from_name= &file_entry_buf[inx]; |
|
503 |
inx+= global_ddl_log.name_len; |
|
504 |
ddl_log_entry->handler_name= &file_entry_buf[inx]; |
|
505 |
DBUG_RETURN(FALSE); |
|
506 |
}
|
|
507 |
||
508 |
||
509 |
/*
|
|
510 |
Initialise ddl log
|
|
511 |
SYNOPSIS
|
|
512 |
init_ddl_log()
|
|
513 |
||
514 |
DESCRIPTION
|
|
515 |
Write the header of the ddl log file and length of names. Also set
|
|
516 |
number of entries to zero.
|
|
517 |
||
518 |
RETURN VALUES
|
|
519 |
TRUE Error
|
|
520 |
FALSE Success
|
|
521 |
*/
|
|
522 |
||
523 |
static bool init_ddl_log() |
|
524 |
{
|
|
525 |
char file_name[FN_REFLEN]; |
|
526 |
DBUG_ENTER("init_ddl_log"); |
|
527 |
||
528 |
if (global_ddl_log.inited) |
|
529 |
goto end; |
|
530 |
||
531 |
global_ddl_log.io_size= IO_SIZE; |
|
532 |
create_ddl_log_file_name(file_name); |
|
533 |
if ((global_ddl_log.file_id= my_create(file_name, |
|
534 |
CREATE_MODE, |
|
535 |
O_RDWR | O_TRUNC | O_BINARY, |
|
536 |
MYF(MY_WME))) < 0) |
|
537 |
{
|
|
538 |
/* Couldn't create ddl log file, this is serious error */
|
|
539 |
sql_print_error("Failed to open ddl log file"); |
|
540 |
DBUG_RETURN(TRUE); |
|
541 |
}
|
|
542 |
global_ddl_log.inited= TRUE; |
|
543 |
if (write_ddl_log_header()) |
|
544 |
{
|
|
545 |
VOID(my_close(global_ddl_log.file_id, MYF(MY_WME))); |
|
546 |
global_ddl_log.inited= FALSE; |
|
547 |
DBUG_RETURN(TRUE); |
|
548 |
}
|
|
549 |
||
550 |
end: |
|
551 |
DBUG_RETURN(FALSE); |
|
552 |
}
|
|
553 |
||
554 |
||
555 |
/*
|
|
556 |
Execute one action in a ddl log entry
|
|
557 |
SYNOPSIS
|
|
558 |
execute_ddl_log_action()
|
|
559 |
ddl_log_entry Information in action entry to execute
|
|
560 |
RETURN VALUES
|
|
561 |
TRUE Error
|
|
562 |
FALSE Success
|
|
563 |
*/
|
|
564 |
||
565 |
static int execute_ddl_log_action(THD *thd, DDL_LOG_ENTRY *ddl_log_entry) |
|
566 |
{
|
|
567 |
bool frm_action= FALSE; |
|
568 |
LEX_STRING handler_name; |
|
569 |
handler *file= NULL; |
|
570 |
MEM_ROOT mem_root; |
|
571 |
int error= TRUE; |
|
572 |
char to_path[FN_REFLEN]; |
|
573 |
char from_path[FN_REFLEN]; |
|
574 |
handlerton *hton; |
|
575 |
DBUG_ENTER("execute_ddl_log_action"); |
|
576 |
||
577 |
if (ddl_log_entry->entry_type == DDL_IGNORE_LOG_ENTRY_CODE) |
|
578 |
{
|
|
579 |
DBUG_RETURN(FALSE); |
|
580 |
}
|
|
581 |
handler_name.str= (char*)ddl_log_entry->handler_name; |
|
582 |
handler_name.length= strlen(ddl_log_entry->handler_name); |
|
583 |
init_sql_alloc(&mem_root, TABLE_ALLOC_BLOCK_SIZE, 0); |
|
584 |
if (!strcmp(ddl_log_entry->handler_name, reg_ext)) |
|
585 |
frm_action= TRUE; |
|
586 |
else
|
|
587 |
{
|
|
588 |
plugin_ref plugin= ha_resolve_by_name(thd, &handler_name); |
|
589 |
if (!plugin) |
|
590 |
{
|
|
591 |
my_error(ER_ILLEGAL_HA, MYF(0), ddl_log_entry->handler_name); |
|
592 |
goto error; |
|
593 |
}
|
|
594 |
hton= plugin_data(plugin, handlerton*); |
|
595 |
file= get_new_handler((TABLE_SHARE*)0, &mem_root, hton); |
|
596 |
if (!file) |
|
597 |
{
|
|
598 |
my_error(ER_OUTOFMEMORY, MYF(0), sizeof(handler)); |
|
599 |
goto error; |
|
600 |
}
|
|
601 |
}
|
|
602 |
switch (ddl_log_entry->action_type) |
|
603 |
{
|
|
604 |
case DDL_LOG_REPLACE_ACTION: |
|
605 |
case DDL_LOG_DELETE_ACTION: |
|
606 |
{
|
|
607 |
if (ddl_log_entry->phase == 0) |
|
608 |
{
|
|
609 |
if (frm_action) |
|
610 |
{
|
|
611 |
strxmov(to_path, ddl_log_entry->name, reg_ext, NullS); |
|
612 |
if ((error= my_delete(to_path, MYF(MY_WME)))) |
|
613 |
{
|
|
614 |
if (my_errno != ENOENT) |
|
615 |
break; |
|
616 |
}
|
|
617 |
}
|
|
618 |
else
|
|
619 |
{
|
|
620 |
if ((error= file->ha_delete_table(ddl_log_entry->name))) |
|
621 |
{
|
|
622 |
if (error != ENOENT && error != HA_ERR_NO_SUCH_TABLE) |
|
623 |
break; |
|
624 |
}
|
|
625 |
}
|
|
626 |
if ((deactivate_ddl_log_entry(ddl_log_entry->entry_pos))) |
|
627 |
break; |
|
628 |
VOID(sync_ddl_log()); |
|
629 |
error= FALSE; |
|
630 |
if (ddl_log_entry->action_type == DDL_LOG_DELETE_ACTION) |
|
631 |
break; |
|
632 |
}
|
|
633 |
DBUG_ASSERT(ddl_log_entry->action_type == DDL_LOG_REPLACE_ACTION); |
|
634 |
/*
|
|
635 |
Fall through and perform the rename action of the replace
|
|
636 |
action. We have already indicated the success of the delete
|
|
637 |
action in the log entry by stepping up the phase.
|
|
638 |
*/
|
|
639 |
}
|
|
640 |
case DDL_LOG_RENAME_ACTION: |
|
641 |
{
|
|
642 |
error= TRUE; |
|
643 |
if (frm_action) |
|
644 |
{
|
|
645 |
strxmov(to_path, ddl_log_entry->name, reg_ext, NullS); |
|
646 |
strxmov(from_path, ddl_log_entry->from_name, reg_ext, NullS); |
|
647 |
if (my_rename(from_path, to_path, MYF(MY_WME))) |
|
648 |
break; |
|
649 |
}
|
|
650 |
else
|
|
651 |
{
|
|
652 |
if (file->ha_rename_table(ddl_log_entry->from_name, |
|
653 |
ddl_log_entry->name)) |
|
654 |
break; |
|
655 |
}
|
|
656 |
if ((deactivate_ddl_log_entry(ddl_log_entry->entry_pos))) |
|
657 |
break; |
|
658 |
VOID(sync_ddl_log()); |
|
659 |
error= FALSE; |
|
660 |
break; |
|
661 |
}
|
|
662 |
default: |
|
663 |
DBUG_ASSERT(0); |
|
664 |
break; |
|
665 |
}
|
|
666 |
delete file; |
|
667 |
error: |
|
668 |
free_root(&mem_root, MYF(0)); |
|
669 |
DBUG_RETURN(error); |
|
670 |
}
|
|
671 |
||
672 |
||
673 |
/*
|
|
674 |
Get a free entry in the ddl log
|
|
675 |
SYNOPSIS
|
|
676 |
get_free_ddl_log_entry()
|
|
677 |
out:active_entry A ddl log memory entry returned
|
|
678 |
RETURN VALUES
|
|
679 |
TRUE Error
|
|
680 |
FALSE Success
|
|
681 |
*/
|
|
682 |
||
683 |
static bool get_free_ddl_log_entry(DDL_LOG_MEMORY_ENTRY **active_entry, |
|
684 |
bool *write_header) |
|
685 |
{
|
|
686 |
DDL_LOG_MEMORY_ENTRY *used_entry; |
|
687 |
DDL_LOG_MEMORY_ENTRY *first_used= global_ddl_log.first_used; |
|
688 |
DBUG_ENTER("get_free_ddl_log_entry"); |
|
689 |
||
690 |
if (global_ddl_log.first_free == NULL) |
|
691 |
{
|
|
692 |
if (!(used_entry= (DDL_LOG_MEMORY_ENTRY*)my_malloc( |
|
693 |
sizeof(DDL_LOG_MEMORY_ENTRY), MYF(MY_WME)))) |
|
694 |
{
|
|
695 |
sql_print_error("Failed to allocate memory for ddl log free list"); |
|
696 |
DBUG_RETURN(TRUE); |
|
697 |
}
|
|
698 |
global_ddl_log.num_entries++; |
|
699 |
used_entry->entry_pos= global_ddl_log.num_entries; |
|
700 |
*write_header= TRUE; |
|
701 |
}
|
|
702 |
else
|
|
703 |
{
|
|
704 |
used_entry= global_ddl_log.first_free; |
|
705 |
global_ddl_log.first_free= used_entry->next_log_entry; |
|
706 |
*write_header= FALSE; |
|
707 |
}
|
|
708 |
/*
|
|
709 |
Move from free list to used list
|
|
710 |
*/
|
|
711 |
used_entry->next_log_entry= first_used; |
|
712 |
used_entry->prev_log_entry= NULL; |
|
713 |
global_ddl_log.first_used= used_entry; |
|
714 |
if (first_used) |
|
715 |
first_used->prev_log_entry= used_entry; |
|
716 |
||
717 |
*active_entry= used_entry; |
|
718 |
DBUG_RETURN(FALSE); |
|
719 |
}
|
|
720 |
||
721 |
||
722 |
/*
|
|
723 |
External interface methods for the DDL log Module
|
|
724 |
---------------------------------------------------
|
|
725 |
*/
|
|
726 |
||
727 |
/*
|
|
728 |
SYNOPSIS
|
|
729 |
write_ddl_log_entry()
|
|
730 |
ddl_log_entry Information about log entry
|
|
731 |
out:entry_written Entry information written into
|
|
732 |
||
733 |
RETURN VALUES
|
|
734 |
TRUE Error
|
|
735 |
FALSE Success
|
|
736 |
||
737 |
DESCRIPTION
|
|
738 |
A careful write of the ddl log is performed to ensure that we can
|
|
739 |
handle crashes occurring during CREATE and ALTER TABLE processing.
|
|
740 |
*/
|
|
741 |
||
742 |
bool write_ddl_log_entry(DDL_LOG_ENTRY *ddl_log_entry, |
|
743 |
DDL_LOG_MEMORY_ENTRY **active_entry) |
|
744 |
{
|
|
745 |
bool error, write_header; |
|
746 |
DBUG_ENTER("write_ddl_log_entry"); |
|
747 |
||
748 |
if (init_ddl_log()) |
|
749 |
{
|
|
750 |
DBUG_RETURN(TRUE); |
|
751 |
}
|
|
752 |
global_ddl_log.file_entry_buf[DDL_LOG_ENTRY_TYPE_POS]= |
|
753 |
(char)DDL_LOG_ENTRY_CODE; |
|
754 |
global_ddl_log.file_entry_buf[DDL_LOG_ACTION_TYPE_POS]= |
|
755 |
(char)ddl_log_entry->action_type; |
|
756 |
global_ddl_log.file_entry_buf[DDL_LOG_PHASE_POS]= 0; |
|
757 |
int4store(&global_ddl_log.file_entry_buf[DDL_LOG_NEXT_ENTRY_POS], |
|
758 |
ddl_log_entry->next_entry); |
|
759 |
DBUG_ASSERT(strlen(ddl_log_entry->name) < FN_LEN); |
|
760 |
strmake(&global_ddl_log.file_entry_buf[DDL_LOG_NAME_POS], |
|
761 |
ddl_log_entry->name, FN_LEN - 1); |
|
762 |
if (ddl_log_entry->action_type == DDL_LOG_RENAME_ACTION || |
|
763 |
ddl_log_entry->action_type == DDL_LOG_REPLACE_ACTION) |
|
764 |
{
|
|
765 |
DBUG_ASSERT(strlen(ddl_log_entry->from_name) < FN_LEN); |
|
766 |
strmake(&global_ddl_log.file_entry_buf[DDL_LOG_NAME_POS + FN_LEN], |
|
767 |
ddl_log_entry->from_name, FN_LEN - 1); |
|
768 |
}
|
|
769 |
else
|
|
770 |
global_ddl_log.file_entry_buf[DDL_LOG_NAME_POS + FN_LEN]= 0; |
|
771 |
DBUG_ASSERT(strlen(ddl_log_entry->handler_name) < FN_LEN); |
|
772 |
strmake(&global_ddl_log.file_entry_buf[DDL_LOG_NAME_POS + (2*FN_LEN)], |
|
773 |
ddl_log_entry->handler_name, FN_LEN - 1); |
|
774 |
if (get_free_ddl_log_entry(active_entry, &write_header)) |
|
775 |
{
|
|
776 |
DBUG_RETURN(TRUE); |
|
777 |
}
|
|
778 |
error= FALSE; |
|
779 |
if (write_ddl_log_file_entry((*active_entry)->entry_pos)) |
|
780 |
{
|
|
781 |
error= TRUE; |
|
782 |
sql_print_error("Failed to write entry_no = %u", |
|
783 |
(*active_entry)->entry_pos); |
|
784 |
}
|
|
785 |
if (write_header && !error) |
|
786 |
{
|
|
787 |
VOID(sync_ddl_log()); |
|
788 |
if (write_ddl_log_header()) |
|
789 |
error= TRUE; |
|
790 |
}
|
|
791 |
if (error) |
|
792 |
release_ddl_log_memory_entry(*active_entry); |
|
793 |
DBUG_RETURN(error); |
|
794 |
}
|
|
795 |
||
796 |
||
797 |
/*
|
|
798 |
Write final entry in the ddl log
|
|
799 |
SYNOPSIS
|
|
800 |
write_execute_ddl_log_entry()
|
|
801 |
first_entry First entry in linked list of entries
|
|
802 |
to execute, if 0 = NULL it means that
|
|
803 |
the entry is removed and the entries
|
|
804 |
are put into the free list.
|
|
805 |
complete Flag indicating we are simply writing
|
|
806 |
info about that entry has been completed
|
|
807 |
in:out:active_entry Entry to execute, 0 = NULL if the entry
|
|
808 |
is written first time and needs to be
|
|
809 |
returned. In this case the entry written
|
|
810 |
is returned in this parameter
|
|
811 |
RETURN VALUES
|
|
812 |
TRUE Error
|
|
813 |
FALSE Success
|
|
814 |
||
815 |
DESCRIPTION
|
|
816 |
This is the last write in the ddl log. The previous log entries have
|
|
817 |
already been written but not yet synched to disk.
|
|
818 |
We write a couple of log entries that describes action to perform.
|
|
819 |
This entries are set-up in a linked list, however only when a first
|
|
820 |
execute entry is put as the first entry these will be executed.
|
|
821 |
This routine writes this first
|
|
822 |
*/
|
|
823 |
||
824 |
bool write_execute_ddl_log_entry(uint first_entry, |
|
825 |
bool complete, |
|
826 |
DDL_LOG_MEMORY_ENTRY **active_entry) |
|
827 |
{
|
|
828 |
bool write_header= FALSE; |
|
829 |
char *file_entry_buf= (char*)global_ddl_log.file_entry_buf; |
|
830 |
DBUG_ENTER("write_execute_ddl_log_entry"); |
|
831 |
||
832 |
if (init_ddl_log()) |
|
833 |
{
|
|
834 |
DBUG_RETURN(TRUE); |
|
835 |
}
|
|
836 |
if (!complete) |
|
837 |
{
|
|
838 |
/*
|
|
839 |
We haven't synched the log entries yet, we synch them now before
|
|
840 |
writing the execute entry. If complete is true we haven't written
|
|
841 |
any log entries before, we are only here to write the execute
|
|
842 |
entry to indicate it is done.
|
|
843 |
*/
|
|
844 |
VOID(sync_ddl_log()); |
|
845 |
file_entry_buf[DDL_LOG_ENTRY_TYPE_POS]= (char)DDL_LOG_EXECUTE_CODE; |
|
846 |
}
|
|
847 |
else
|
|
848 |
file_entry_buf[DDL_LOG_ENTRY_TYPE_POS]= (char)DDL_IGNORE_LOG_ENTRY_CODE; |
|
849 |
file_entry_buf[DDL_LOG_ACTION_TYPE_POS]= 0; /* Ignored for execute entries */ |
|
850 |
file_entry_buf[DDL_LOG_PHASE_POS]= 0; |
|
851 |
int4store(&file_entry_buf[DDL_LOG_NEXT_ENTRY_POS], first_entry); |
|
852 |
file_entry_buf[DDL_LOG_NAME_POS]= 0; |
|
853 |
file_entry_buf[DDL_LOG_NAME_POS + FN_LEN]= 0; |
|
854 |
file_entry_buf[DDL_LOG_NAME_POS + 2*FN_LEN]= 0; |
|
855 |
if (!(*active_entry)) |
|
856 |
{
|
|
857 |
if (get_free_ddl_log_entry(active_entry, &write_header)) |
|
858 |
{
|
|
859 |
DBUG_RETURN(TRUE); |
|
860 |
}
|
|
861 |
}
|
|
862 |
if (write_ddl_log_file_entry((*active_entry)->entry_pos)) |
|
863 |
{
|
|
864 |
sql_print_error("Error writing execute entry in ddl log"); |
|
865 |
release_ddl_log_memory_entry(*active_entry); |
|
866 |
DBUG_RETURN(TRUE); |
|
867 |
}
|
|
868 |
VOID(sync_ddl_log()); |
|
869 |
if (write_header) |
|
870 |
{
|
|
871 |
if (write_ddl_log_header()) |
|
872 |
{
|
|
873 |
release_ddl_log_memory_entry(*active_entry); |
|
874 |
DBUG_RETURN(TRUE); |
|
875 |
}
|
|
876 |
}
|
|
877 |
DBUG_RETURN(FALSE); |
|
878 |
}
|
|
879 |
||
880 |
||
881 |
/*
|
|
882 |
For complex rename operations we need to deactivate individual entries.
|
|
883 |
SYNOPSIS
|
|
884 |
deactivate_ddl_log_entry()
|
|
885 |
entry_no Entry position of record to change
|
|
886 |
RETURN VALUES
|
|
887 |
TRUE Error
|
|
888 |
FALSE Success
|
|
889 |
DESCRIPTION
|
|
890 |
During replace operations where we start with an existing table called
|
|
891 |
t1 and a replacement table called t1#temp or something else and where
|
|
892 |
we want to delete t1 and rename t1#temp to t1 this is not possible to
|
|
893 |
do in a safe manner unless the ddl log is informed of the phases in
|
|
894 |
the change.
|
|
895 |
||
896 |
Delete actions are 1-phase actions that can be ignored immediately after
|
|
897 |
being executed.
|
|
898 |
Rename actions from x to y is also a 1-phase action since there is no
|
|
899 |
interaction with any other handlers named x and y.
|
|
900 |
Replace action where drop y and x -> y happens needs to be a two-phase
|
|
901 |
action. Thus the first phase will drop y and the second phase will
|
|
902 |
rename x -> y.
|
|
903 |
*/
|
|
904 |
||
905 |
bool deactivate_ddl_log_entry(uint entry_no) |
|
906 |
{
|
|
907 |
char *file_entry_buf= (char*)global_ddl_log.file_entry_buf; |
|
908 |
DBUG_ENTER("deactivate_ddl_log_entry"); |
|
909 |
||
910 |
if (!read_ddl_log_file_entry(entry_no)) |
|
911 |
{
|
|
912 |
if (file_entry_buf[DDL_LOG_ENTRY_TYPE_POS] == DDL_LOG_ENTRY_CODE) |
|
913 |
{
|
|
914 |
if (file_entry_buf[DDL_LOG_ACTION_TYPE_POS] == DDL_LOG_DELETE_ACTION || |
|
915 |
file_entry_buf[DDL_LOG_ACTION_TYPE_POS] == DDL_LOG_RENAME_ACTION || |
|
916 |
(file_entry_buf[DDL_LOG_ACTION_TYPE_POS] == DDL_LOG_REPLACE_ACTION && |
|
917 |
file_entry_buf[DDL_LOG_PHASE_POS] == 1)) |
|
918 |
file_entry_buf[DDL_LOG_ENTRY_TYPE_POS]= DDL_IGNORE_LOG_ENTRY_CODE; |
|
919 |
else if (file_entry_buf[DDL_LOG_ACTION_TYPE_POS] == DDL_LOG_REPLACE_ACTION) |
|
920 |
{
|
|
921 |
DBUG_ASSERT(file_entry_buf[DDL_LOG_PHASE_POS] == 0); |
|
922 |
file_entry_buf[DDL_LOG_PHASE_POS]= 1; |
|
923 |
}
|
|
924 |
else
|
|
925 |
{
|
|
926 |
DBUG_ASSERT(0); |
|
927 |
}
|
|
928 |
if (write_ddl_log_file_entry(entry_no)) |
|
929 |
{
|
|
930 |
sql_print_error("Error in deactivating log entry. Position = %u", |
|
931 |
entry_no); |
|
932 |
DBUG_RETURN(TRUE); |
|
933 |
}
|
|
934 |
}
|
|
935 |
}
|
|
936 |
else
|
|
937 |
{
|
|
938 |
sql_print_error("Failed in reading entry before deactivating it"); |
|
939 |
DBUG_RETURN(TRUE); |
|
940 |
}
|
|
941 |
DBUG_RETURN(FALSE); |
|
942 |
}
|
|
943 |
||
944 |
||
945 |
/*
|
|
946 |
Sync ddl log file
|
|
947 |
SYNOPSIS
|
|
948 |
sync_ddl_log()
|
|
949 |
RETURN VALUES
|
|
950 |
TRUE Error
|
|
951 |
FALSE Success
|
|
952 |
*/
|
|
953 |
||
954 |
bool sync_ddl_log() |
|
955 |
{
|
|
956 |
bool error= FALSE; |
|
957 |
DBUG_ENTER("sync_ddl_log"); |
|
958 |
||
959 |
if ((!global_ddl_log.recovery_phase) && |
|
960 |
init_ddl_log()) |
|
961 |
{
|
|
962 |
DBUG_RETURN(TRUE); |
|
963 |
}
|
|
964 |
if (my_sync(global_ddl_log.file_id, MYF(0))) |
|
965 |
{
|
|
966 |
/* Write to error log */
|
|
967 |
sql_print_error("Failed to sync ddl log"); |
|
968 |
error= TRUE; |
|
969 |
}
|
|
970 |
DBUG_RETURN(error); |
|
971 |
}
|
|
972 |
||
973 |
||
974 |
/*
|
|
975 |
Release a log memory entry
|
|
976 |
SYNOPSIS
|
|
977 |
release_ddl_log_memory_entry()
|
|
978 |
log_memory_entry Log memory entry to release
|
|
979 |
RETURN VALUES
|
|
980 |
NONE
|
|
981 |
*/
|
|
982 |
||
983 |
void release_ddl_log_memory_entry(DDL_LOG_MEMORY_ENTRY *log_entry) |
|
984 |
{
|
|
985 |
DDL_LOG_MEMORY_ENTRY *first_free= global_ddl_log.first_free; |
|
986 |
DDL_LOG_MEMORY_ENTRY *next_log_entry= log_entry->next_log_entry; |
|
987 |
DDL_LOG_MEMORY_ENTRY *prev_log_entry= log_entry->prev_log_entry; |
|
988 |
DBUG_ENTER("release_ddl_log_memory_entry"); |
|
989 |
||
990 |
global_ddl_log.first_free= log_entry; |
|
991 |
log_entry->next_log_entry= first_free; |
|
992 |
||
993 |
if (prev_log_entry) |
|
994 |
prev_log_entry->next_log_entry= next_log_entry; |
|
995 |
else
|
|
996 |
global_ddl_log.first_used= next_log_entry; |
|
997 |
if (next_log_entry) |
|
998 |
next_log_entry->prev_log_entry= prev_log_entry; |
|
999 |
DBUG_VOID_RETURN; |
|
1000 |
}
|
|
1001 |
||
1002 |
||
1003 |
/*
|
|
1004 |
Execute one entry in the ddl log. Executing an entry means executing
|
|
1005 |
a linked list of actions.
|
|
1006 |
SYNOPSIS
|
|
1007 |
execute_ddl_log_entry()
|
|
1008 |
first_entry Reference to first action in entry
|
|
1009 |
RETURN VALUES
|
|
1010 |
TRUE Error
|
|
1011 |
FALSE Success
|
|
1012 |
*/
|
|
1013 |
||
1014 |
bool execute_ddl_log_entry(THD *thd, uint first_entry) |
|
1015 |
{
|
|
1016 |
DDL_LOG_ENTRY ddl_log_entry; |
|
1017 |
uint read_entry= first_entry; |
|
1018 |
DBUG_ENTER("execute_ddl_log_entry"); |
|
1019 |
||
1020 |
pthread_mutex_lock(&LOCK_gdl); |
|
1021 |
do
|
|
1022 |
{
|
|
1023 |
if (read_ddl_log_entry(read_entry, &ddl_log_entry)) |
|
1024 |
{
|
|
1025 |
/* Write to error log and continue with next log entry */
|
|
1026 |
sql_print_error("Failed to read entry = %u from ddl log", |
|
1027 |
read_entry); |
|
1028 |
break; |
|
1029 |
}
|
|
1030 |
DBUG_ASSERT(ddl_log_entry.entry_type == DDL_LOG_ENTRY_CODE || |
|
1031 |
ddl_log_entry.entry_type == DDL_IGNORE_LOG_ENTRY_CODE); |
|
1032 |
||
1033 |
if (execute_ddl_log_action(thd, &ddl_log_entry)) |
|
1034 |
{
|
|
1035 |
/* Write to error log and continue with next log entry */
|
|
1036 |
sql_print_error("Failed to execute action for entry = %u from ddl log", |
|
1037 |
read_entry); |
|
1038 |
break; |
|
1039 |
}
|
|
1040 |
read_entry= ddl_log_entry.next_entry; |
|
1041 |
} while (read_entry); |
|
1042 |
pthread_mutex_unlock(&LOCK_gdl); |
|
1043 |
DBUG_RETURN(FALSE); |
|
1044 |
}
|
|
1045 |
||
1046 |
||
1047 |
/*
|
|
1048 |
Close the ddl log
|
|
1049 |
SYNOPSIS
|
|
1050 |
close_ddl_log()
|
|
1051 |
RETURN VALUES
|
|
1052 |
NONE
|
|
1053 |
*/
|
|
1054 |
||
1055 |
static void close_ddl_log() |
|
1056 |
{
|
|
1057 |
DBUG_ENTER("close_ddl_log"); |
|
1058 |
if (global_ddl_log.file_id >= 0) |
|
1059 |
{
|
|
1060 |
VOID(my_close(global_ddl_log.file_id, MYF(MY_WME))); |
|
1061 |
global_ddl_log.file_id= (File) -1; |
|
1062 |
}
|
|
1063 |
DBUG_VOID_RETURN; |
|
1064 |
}
|
|
1065 |
||
1066 |
||
1067 |
/*
|
|
1068 |
Execute the ddl log at recovery of MySQL Server
|
|
1069 |
SYNOPSIS
|
|
1070 |
execute_ddl_log_recovery()
|
|
1071 |
RETURN VALUES
|
|
1072 |
NONE
|
|
1073 |
*/
|
|
1074 |
||
1075 |
void execute_ddl_log_recovery() |
|
1076 |
{
|
|
1077 |
uint num_entries, i; |
|
1078 |
THD *thd; |
|
1079 |
DDL_LOG_ENTRY ddl_log_entry; |
|
1080 |
char file_name[FN_REFLEN]; |
|
1081 |
DBUG_ENTER("execute_ddl_log_recovery"); |
|
1082 |
||
1083 |
/*
|
|
1084 |
Initialise global_ddl_log struct
|
|
1085 |
*/
|
|
1086 |
bzero(global_ddl_log.file_entry_buf, sizeof(global_ddl_log.file_entry_buf)); |
|
1087 |
global_ddl_log.inited= FALSE; |
|
1088 |
global_ddl_log.recovery_phase= TRUE; |
|
1089 |
global_ddl_log.io_size= IO_SIZE; |
|
1090 |
global_ddl_log.file_id= (File) -1; |
|
1091 |
||
1092 |
/*
|
|
1093 |
To be able to run this from boot, we allocate a temporary THD
|
|
1094 |
*/
|
|
1095 |
if (!(thd=new THD)) |
|
1096 |
DBUG_VOID_RETURN; |
|
1097 |
thd->thread_stack= (char*) &thd; |
|
1098 |
thd->store_globals(); |
|
1099 |
||
1100 |
num_entries= read_ddl_log_header(); |
|
1101 |
for (i= 1; i < num_entries + 1; i++) |
|
1102 |
{
|
|
1103 |
if (read_ddl_log_entry(i, &ddl_log_entry)) |
|
1104 |
{
|
|
1105 |
sql_print_error("Failed to read entry no = %u from ddl log", |
|
1106 |
i); |
|
1107 |
continue; |
|
1108 |
}
|
|
1109 |
if (ddl_log_entry.entry_type == DDL_LOG_EXECUTE_CODE) |
|
1110 |
{
|
|
1111 |
if (execute_ddl_log_entry(thd, ddl_log_entry.next_entry)) |
|
1112 |
{
|
|
1113 |
/* Real unpleasant scenario but we continue anyways. */
|
|
1114 |
continue; |
|
1115 |
}
|
|
1116 |
}
|
|
1117 |
}
|
|
1118 |
close_ddl_log(); |
|
1119 |
create_ddl_log_file_name(file_name); |
|
1120 |
VOID(my_delete(file_name, MYF(0))); |
|
1121 |
global_ddl_log.recovery_phase= FALSE; |
|
1122 |
delete thd; |
|
1123 |
/* Remember that we don't have a THD */
|
|
1124 |
my_pthread_setspecific_ptr(THR_THD, 0); |
|
1125 |
DBUG_VOID_RETURN; |
|
1126 |
}
|
|
1127 |
||
1128 |
||
1129 |
/*
|
|
1130 |
Release all memory allocated to the ddl log
|
|
1131 |
SYNOPSIS
|
|
1132 |
release_ddl_log()
|
|
1133 |
RETURN VALUES
|
|
1134 |
NONE
|
|
1135 |
*/
|
|
1136 |
||
1137 |
void release_ddl_log() |
|
1138 |
{
|
|
1139 |
DDL_LOG_MEMORY_ENTRY *free_list= global_ddl_log.first_free; |
|
1140 |
DDL_LOG_MEMORY_ENTRY *used_list= global_ddl_log.first_used; |
|
1141 |
DBUG_ENTER("release_ddl_log"); |
|
1142 |
||
1143 |
if (!global_ddl_log.do_release) |
|
1144 |
DBUG_VOID_RETURN; |
|
1145 |
||
1146 |
pthread_mutex_lock(&LOCK_gdl); |
|
1147 |
while (used_list) |
|
1148 |
{
|
|
1149 |
DDL_LOG_MEMORY_ENTRY *tmp= used_list->next_log_entry; |
|
1150 |
my_free(used_list, MYF(0)); |
|
1151 |
used_list= tmp; |
|
1152 |
}
|
|
1153 |
while (free_list) |
|
1154 |
{
|
|
1155 |
DDL_LOG_MEMORY_ENTRY *tmp= free_list->next_log_entry; |
|
1156 |
my_free(free_list, MYF(0)); |
|
1157 |
free_list= tmp; |
|
1158 |
}
|
|
1159 |
close_ddl_log(); |
|
1160 |
global_ddl_log.inited= 0; |
|
1161 |
pthread_mutex_unlock(&LOCK_gdl); |
|
1162 |
VOID(pthread_mutex_destroy(&LOCK_gdl)); |
|
1163 |
global_ddl_log.do_release= false; |
|
1164 |
DBUG_VOID_RETURN; |
|
1165 |
}
|
|
1166 |
||
1167 |
||
1168 |
/*
|
|
1169 |
---------------------------------------------------------------------------
|
|
1170 |
||
1171 |
END MODULE DDL log
|
|
1172 |
--------------------
|
|
1173 |
||
1174 |
---------------------------------------------------------------------------
|
|
1175 |
*/
|
|
1176 |
||
1177 |
||
1178 |
/*
|
|
1179 |
SYNOPSIS
|
|
1180 |
write_bin_log()
|
|
1181 |
thd Thread object
|
|
1182 |
clear_error is clear_error to be called
|
|
1183 |
query Query to log
|
|
1184 |
query_length Length of query
|
|
1185 |
||
1186 |
RETURN VALUES
|
|
1187 |
NONE
|
|
1188 |
||
1189 |
DESCRIPTION
|
|
1190 |
Write the binlog if open, routine used in multiple places in this
|
|
1191 |
file
|
|
1192 |
*/
|
|
1193 |
||
1194 |
void write_bin_log(THD *thd, bool clear_error, |
|
1195 |
char const *query, ulong query_length) |
|
1196 |
{
|
|
1197 |
if (mysql_bin_log.is_open()) |
|
1198 |
{
|
|
1199 |
if (clear_error) |
|
1200 |
thd->clear_error(); |
|
1201 |
thd->binlog_query(THD::STMT_QUERY_TYPE, |
|
1202 |
query, query_length, FALSE, FALSE); |
|
1203 |
}
|
|
1204 |
}
|
|
1205 |
||
1206 |
||
1207 |
/*
|
|
1208 |
delete (drop) tables.
|
|
1209 |
||
1210 |
SYNOPSIS
|
|
1211 |
mysql_rm_table()
|
|
1212 |
thd Thread handle
|
|
1213 |
tables List of tables to delete
|
|
1214 |
if_exists If 1, don't give error if one table doesn't exists
|
|
1215 |
||
1216 |
NOTES
|
|
1217 |
Will delete all tables that can be deleted and give a compact error
|
|
1218 |
messages for tables that could not be deleted.
|
|
1219 |
If a table is in use, we will wait for all users to free the table
|
|
1220 |
before dropping it
|
|
1221 |
||
1222 |
Wait if global_read_lock (FLUSH TABLES WITH READ LOCK) is set, but
|
|
1223 |
not if under LOCK TABLES.
|
|
1224 |
||
1225 |
RETURN
|
|
1226 |
FALSE OK. In this case ok packet is sent to user
|
|
1227 |
TRUE Error
|
|
1228 |
||
1229 |
*/
|
|
1230 |
||
1231 |
bool mysql_rm_table(THD *thd,TABLE_LIST *tables, my_bool if_exists, |
|
1232 |
my_bool drop_temporary) |
|
1233 |
{
|
|
1234 |
bool error, need_start_waiting= FALSE; |
|
1235 |
DBUG_ENTER("mysql_rm_table"); |
|
1236 |
||
1237 |
if (tables && tables->schema_table) |
|
1238 |
{
|
|
1239 |
my_error(ER_DBACCESS_DENIED_ERROR, MYF(0), "", "", INFORMATION_SCHEMA_NAME.str); |
|
1240 |
DBUG_RETURN(TRUE); |
|
1241 |
}
|
|
1242 |
||
1243 |
/* mark for close and remove all cached entries */
|
|
1244 |
||
1245 |
if (!drop_temporary) |
|
1246 |
{
|
|
1247 |
if (!thd->locked_tables && |
|
1248 |
!(need_start_waiting= !wait_if_global_read_lock(thd, 0, 1))) |
|
1249 |
DBUG_RETURN(TRUE); |
|
1250 |
}
|
|
1251 |
||
1252 |
/*
|
|
1253 |
Acquire LOCK_open after wait_if_global_read_lock(). If we would hold
|
|
1254 |
LOCK_open during wait_if_global_read_lock(), other threads could not
|
|
1255 |
close their tables. This would make a pretty deadlock.
|
|
1256 |
*/
|
|
1257 |
error= mysql_rm_table_part2(thd, tables, if_exists, drop_temporary, 0, 0); |
|
1258 |
||
1259 |
if (need_start_waiting) |
|
1260 |
start_waiting_global_read_lock(thd); |
|
1261 |
||
1262 |
if (error) |
|
1263 |
DBUG_RETURN(TRUE); |
|
1264 |
my_ok(thd); |
|
1265 |
DBUG_RETURN(FALSE); |
|
1266 |
}
|
|
1267 |
||
1268 |
/*
|
|
1269 |
Execute the drop of a normal or temporary table
|
|
1270 |
||
1271 |
SYNOPSIS
|
|
1272 |
mysql_rm_table_part2()
|
|
1273 |
thd Thread handler
|
|
1274 |
tables Tables to drop
|
|
1275 |
if_exists If set, don't give an error if table doesn't exists.
|
|
1276 |
In this case we give an warning of level 'NOTE'
|
|
1277 |
drop_temporary Only drop temporary tables
|
|
1278 |
drop_view Allow to delete VIEW .frm
|
|
1279 |
dont_log_query Don't write query to log files. This will also not
|
|
1280 |
generate warnings if the handler files doesn't exists
|
|
1281 |
||
1282 |
TODO:
|
|
1283 |
When logging to the binary log, we should log
|
|
1284 |
tmp_tables and transactional tables as separate statements if we
|
|
1285 |
are in a transaction; This is needed to get these tables into the
|
|
1286 |
cached binary log that is only written on COMMIT.
|
|
1287 |
||
1288 |
The current code only writes DROP statements that only uses temporary
|
|
1289 |
tables to the cache binary log. This should be ok on most cases, but
|
|
1290 |
not all.
|
|
1291 |
||
1292 |
RETURN
|
|
1293 |
0 ok
|
|
1294 |
1 Error
|
|
1295 |
-1 Thread was killed
|
|
1296 |
*/
|
|
1297 |
||
1298 |
int mysql_rm_table_part2(THD *thd, TABLE_LIST *tables, bool if_exists, |
|
1299 |
bool drop_temporary, bool drop_view, |
|
1300 |
bool dont_log_query) |
|
1301 |
{
|
|
1302 |
TABLE_LIST *table; |
|
1303 |
char path[FN_REFLEN], *alias; |
|
1304 |
uint path_length; |
|
1305 |
String wrong_tables; |
|
1306 |
int error= 0; |
|
1307 |
int non_temp_tables_count= 0; |
|
1308 |
bool some_tables_deleted=0, tmp_table_deleted=0, foreign_key_error=0; |
|
1309 |
String built_query; |
|
1310 |
DBUG_ENTER("mysql_rm_table_part2"); |
|
1311 |
||
1312 |
if (thd->current_stmt_binlog_row_based && !dont_log_query) |
|
1313 |
{
|
|
1314 |
built_query.set_charset(system_charset_info); |
|
1315 |
if (if_exists) |
|
1316 |
built_query.append("DROP TABLE IF EXISTS "); |
|
1317 |
else
|
|
1318 |
built_query.append("DROP TABLE "); |
|
1319 |
}
|
|
1320 |
||
1321 |
mysql_ha_rm_tables(thd, tables, FALSE); |
|
1322 |
||
1323 |
pthread_mutex_lock(&LOCK_open); |
|
1324 |
||
1325 |
/*
|
|
1326 |
If we have the table in the definition cache, we don't have to check the
|
|
1327 |
.frm file to find if the table is a normal table (not view) and what
|
|
1328 |
engine to use.
|
|
1329 |
*/
|
|
1330 |
||
1331 |
for (table= tables; table; table= table->next_local) |
|
1332 |
{
|
|
1333 |
TABLE_SHARE *share; |
|
1334 |
table->db_type= NULL; |
|
1335 |
if ((share= get_cached_table_share(table->db, table->table_name))) |
|
1336 |
table->db_type= share->db_type(); |
|
1337 |
}
|
|
1338 |
||
1339 |
if (!drop_temporary && lock_table_names_exclusively(thd, tables)) |
|
1340 |
{
|
|
1341 |
pthread_mutex_unlock(&LOCK_open); |
|
1342 |
DBUG_RETURN(1); |
|
1343 |
}
|
|
1344 |
||
1345 |
/* Don't give warnings for not found errors, as we already generate notes */
|
|
1346 |
thd->no_warnings_for_error= 1; |
|
1347 |
||
1348 |
for (table= tables; table; table= table->next_local) |
|
1349 |
{
|
|
1350 |
char *db=table->db; |
|
1351 |
handlerton *table_type; |
|
1352 |
enum legacy_db_type frm_db_type; |
|
1353 |
||
1354 |
DBUG_PRINT("table", ("table_l: '%s'.'%s' table: 0x%lx s: 0x%lx", |
|
1355 |
table->db, table->table_name, (long) table->table, |
|
1356 |
table->table ? (long) table->table->s : (long) -1)); |
|
1357 |
||
1358 |
error= drop_temporary_table(thd, table); |
|
1359 |
||
1360 |
switch (error) { |
|
1361 |
case 0: |
|
1362 |
// removed temporary table
|
|
1363 |
tmp_table_deleted= 1; |
|
1364 |
continue; |
|
1365 |
case -1: |
|
1366 |
DBUG_ASSERT(thd->in_sub_stmt); |
|
1367 |
error= 1; |
|
1368 |
goto err_with_placeholders; |
|
1369 |
default: |
|
1370 |
// temporary table not found
|
|
1371 |
error= 0; |
|
1372 |
}
|
|
1373 |
||
1374 |
/*
|
|
1375 |
If row-based replication is used and the table is not a
|
|
1376 |
temporary table, we add the table name to the drop statement
|
|
1377 |
being built. The string always end in a comma and the comma
|
|
1378 |
will be chopped off before being written to the binary log.
|
|
1379 |
*/
|
|
1380 |
if (thd->current_stmt_binlog_row_based && !dont_log_query) |
|
1381 |
{
|
|
1382 |
non_temp_tables_count++; |
|
1383 |
/*
|
|
1384 |
Don't write the database name if it is the current one (or if
|
|
1385 |
thd->db is NULL).
|
|
1386 |
*/
|
|
1387 |
built_query.append("`"); |
|
1388 |
if (thd->db == NULL || strcmp(db,thd->db) != 0) |
|
1389 |
{
|
|
1390 |
built_query.append(db); |
|
1391 |
built_query.append("`.`"); |
|
1392 |
}
|
|
1393 |
||
1394 |
built_query.append(table->table_name); |
|
1395 |
built_query.append("`,"); |
|
1396 |
}
|
|
1397 |
||
1398 |
table_type= table->db_type; |
|
1399 |
if (!drop_temporary) |
|
1400 |
{
|
|
1401 |
TABLE *locked_table; |
|
1402 |
abort_locked_tables(thd, db, table->table_name); |
|
1403 |
remove_table_from_cache(thd, db, table->table_name, |
|
1404 |
RTFC_WAIT_OTHER_THREAD_FLAG | |
|
1405 |
RTFC_CHECK_KILLED_FLAG); |
|
1406 |
/*
|
|
1407 |
If the table was used in lock tables, remember it so that
|
|
1408 |
unlock_table_names can free it
|
|
1409 |
*/
|
|
1410 |
if ((locked_table= drop_locked_tables(thd, db, table->table_name))) |
|
1411 |
table->table= locked_table; |
|
1412 |
||
1413 |
if (thd->killed) |
|
1414 |
{
|
|
1415 |
error= -1; |
|
1416 |
goto err_with_placeholders; |
|
1417 |
}
|
|
1418 |
alias= (lower_case_table_names == 2) ? table->alias : table->table_name; |
|
1419 |
/* remove .frm file and engine files */
|
|
1420 |
path_length= build_table_filename(path, sizeof(path), db, alias, reg_ext, |
|
1421 |
table->internal_tmp_table ? |
|
1422 |
FN_IS_TMP : 0); |
|
1423 |
}
|
|
1424 |
if (drop_temporary || |
|
1425 |
((table_type == NULL && (access(path, F_OK) && ha_create_table_from_engine(thd, db, alias))) || |
|
1426 |
(!drop_view && mysql_frm_type(thd, path, &frm_db_type) != FRMTYPE_TABLE))) |
|
1427 |
{
|
|
1428 |
// Table was not found on disk and table can't be created from engine
|
|
1429 |
if (if_exists) |
|
1430 |
push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_NOTE, |
|
1431 |
ER_BAD_TABLE_ERROR, ER(ER_BAD_TABLE_ERROR), |
|
1432 |
table->table_name); |
|
1433 |
else
|
|
1434 |
error= 1; |
|
1435 |
}
|
|
1436 |
else
|
|
1437 |
{
|
|
1438 |
char *end; |
|
1439 |
if (table_type == NULL) |
|
1440 |
{
|
|
1441 |
mysql_frm_type(thd, path, &frm_db_type); |
|
1442 |
table_type= ha_resolve_by_legacy_type(thd, frm_db_type); |
|
1443 |
}
|
|
1444 |
// Remove extension for delete
|
|
1445 |
*(end= path + path_length - reg_ext_length)= '\0'; |
|
1446 |
error= ha_delete_table(thd, table_type, path, db, table->table_name, |
|
1447 |
!dont_log_query); |
|
1448 |
if ((error == ENOENT || error == HA_ERR_NO_SUCH_TABLE) && |
|
1449 |
(if_exists || table_type == NULL)) |
|
1450 |
{
|
|
1451 |
error= 0; |
|
1452 |
thd->clear_error(); |
|
1453 |
}
|
|
1454 |
if (error == HA_ERR_ROW_IS_REFERENCED) |
|
1455 |
{
|
|
1456 |
/* the table is referenced by a foreign key constraint */
|
|
1457 |
foreign_key_error=1; |
|
1458 |
}
|
|
1459 |
if (!error || error == ENOENT || error == HA_ERR_NO_SUCH_TABLE) |
|
1460 |
{
|
|
1461 |
int new_error; |
|
1462 |
/* Delete the table definition file */
|
|
1463 |
strmov(end,reg_ext); |
|
1464 |
if (!(new_error=my_delete(path,MYF(MY_WME)))) |
|
1465 |
{
|
|
1466 |
some_tables_deleted=1; |
|
1467 |
new_error= 0; |
|
1468 |
}
|
|
1469 |
error|= new_error; |
|
1470 |
}
|
|
1471 |
}
|
|
1472 |
if (error) |
|
1473 |
{
|
|
1474 |
if (wrong_tables.length()) |
|
1475 |
wrong_tables.append(','); |
|
1476 |
wrong_tables.append(String(table->table_name,system_charset_info)); |
|
1477 |
}
|
|
1478 |
DBUG_PRINT("table", ("table: 0x%lx s: 0x%lx", (long) table->table, |
|
1479 |
table->table ? (long) table->table->s : (long) -1)); |
|
1480 |
}
|
|
1481 |
/*
|
|
1482 |
It's safe to unlock LOCK_open: we have an exclusive lock
|
|
1483 |
on the table name.
|
|
1484 |
*/
|
|
1485 |
pthread_mutex_unlock(&LOCK_open); |
|
1486 |
thd->thread_specific_used|= tmp_table_deleted; |
|
1487 |
error= 0; |
|
1488 |
if (wrong_tables.length()) |
|
1489 |
{
|
|
1490 |
if (!foreign_key_error) |
|
1491 |
my_printf_error(ER_BAD_TABLE_ERROR, ER(ER_BAD_TABLE_ERROR), MYF(0), |
|
1492 |
wrong_tables.c_ptr()); |
|
1493 |
else
|
|
1494 |
my_message(ER_ROW_IS_REFERENCED, ER(ER_ROW_IS_REFERENCED), MYF(0)); |
|
1495 |
error= 1; |
|
1496 |
}
|
|
1497 |
||
1498 |
if (some_tables_deleted || tmp_table_deleted || !error) |
|
1499 |
{
|
|
1500 |
if (!dont_log_query) |
|
1501 |
{
|
|
1502 |
if (!thd->current_stmt_binlog_row_based || |
|
1503 |
(non_temp_tables_count > 0 && !tmp_table_deleted)) |
|
1504 |
{
|
|
1505 |
/*
|
|
1506 |
In this case, we are either using statement-based
|
|
1507 |
replication or using row-based replication but have only
|
|
1508 |
deleted one or more non-temporary tables (and no temporary
|
|
1509 |
tables). In this case, we can write the original query into
|
|
1510 |
the binary log.
|
|
1511 |
*/
|
|
1512 |
write_bin_log(thd, !error, thd->query, thd->query_length); |
|
1513 |
}
|
|
1514 |
else if (thd->current_stmt_binlog_row_based && |
|
1515 |
non_temp_tables_count > 0 && |
|
1516 |
tmp_table_deleted) |
|
1517 |
{
|
|
1518 |
/*
|
|
1519 |
In this case we have deleted both temporary and
|
|
1520 |
non-temporary tables, so:
|
|
1521 |
- since we have deleted a non-temporary table we have to
|
|
1522 |
binlog the statement, but
|
|
1523 |
- since we have deleted a temporary table we cannot binlog
|
|
1524 |
the statement (since the table has not been created on the
|
|
1525 |
slave, this might cause the slave to stop).
|
|
1526 |
||
1527 |
Instead, we write a built statement, only containing the
|
|
1528 |
non-temporary tables, to the binary log
|
|
1529 |
*/
|
|
1530 |
built_query.chop(); // Chop of the last comma |
|
1531 |
built_query.append(" /* generated by server */"); |
|
1532 |
write_bin_log(thd, !error, built_query.ptr(), built_query.length()); |
|
1533 |
}
|
|
1534 |
/*
|
|
1535 |
The remaining cases are:
|
|
1536 |
- no tables where deleted and
|
|
1537 |
- only temporary tables where deleted and row-based
|
|
1538 |
replication is used.
|
|
1539 |
In both these cases, nothing should be written to the binary
|
|
1540 |
log.
|
|
1541 |
*/
|
|
1542 |
}
|
|
1543 |
}
|
|
1544 |
pthread_mutex_lock(&LOCK_open); |
|
1545 |
err_with_placeholders: |
|
1546 |
unlock_table_names(thd, tables, (TABLE_LIST*) 0); |
|
1547 |
pthread_mutex_unlock(&LOCK_open); |
|
1548 |
thd->no_warnings_for_error= 0; |
|
1549 |
DBUG_RETURN(error); |
|
1550 |
}
|
|
1551 |
||
1552 |
||
1553 |
/*
|
|
1554 |
Quickly remove a table.
|
|
1555 |
||
1556 |
SYNOPSIS
|
|
1557 |
quick_rm_table()
|
|
1558 |
base The handlerton handle.
|
|
1559 |
db The database name.
|
|
1560 |
table_name The table name.
|
|
1561 |
flags flags for build_table_filename().
|
|
1562 |
||
1563 |
RETURN
|
|
1564 |
0 OK
|
|
1565 |
!= 0 Error
|
|
1566 |
*/
|
|
1567 |
||
1568 |
bool quick_rm_table(handlerton *base,const char *db, |
|
1569 |
const char *table_name, uint flags) |
|
1570 |
{
|
|
1571 |
char path[FN_REFLEN]; |
|
1572 |
bool error= 0; |
|
1573 |
DBUG_ENTER("quick_rm_table"); |
|
1574 |
||
1575 |
uint path_length= build_table_filename(path, sizeof(path), |
|
1576 |
db, table_name, reg_ext, flags); |
|
1577 |
if (my_delete(path,MYF(0))) |
|
1578 |
error= 1; /* purecov: inspected */ |
|
1579 |
path[path_length - reg_ext_length]= '\0'; // Remove reg_ext |
|
1580 |
DBUG_RETURN(ha_delete_table(current_thd, base, path, db, table_name, 0) || |
|
1581 |
error); |
|
1582 |
}
|
|
1583 |
||
1584 |
/*
|
|
1585 |
Sort keys in the following order:
|
|
1586 |
- PRIMARY KEY
|
|
1587 |
- UNIQUE keys where all column are NOT NULL
|
|
1588 |
- UNIQUE keys that don't contain partial segments
|
|
1589 |
- Other UNIQUE keys
|
|
1590 |
- Normal keys
|
|
1591 |
- Fulltext keys
|
|
1592 |
||
1593 |
This will make checking for duplicated keys faster and ensure that
|
|
1594 |
PRIMARY keys are prioritized.
|
|
1595 |
*/
|
|
1596 |
||
1597 |
static int sort_keys(KEY *a, KEY *b) |
|
1598 |
{
|
|
1599 |
ulong a_flags= a->flags, b_flags= b->flags; |
|
1600 |
||
1601 |
if (a_flags & HA_NOSAME) |
|
1602 |
{
|
|
1603 |
if (!(b_flags & HA_NOSAME)) |
|
1604 |
return -1; |
|
1605 |
if ((a_flags ^ b_flags) & (HA_NULL_PART_KEY | HA_END_SPACE_KEY)) |
|
1606 |
{
|
|
1607 |
/* Sort NOT NULL keys before other keys */
|
|
1608 |
return (a_flags & (HA_NULL_PART_KEY | HA_END_SPACE_KEY)) ? 1 : -1; |
|
1609 |
}
|
|
1610 |
if (a->name == primary_key_name) |
|
1611 |
return -1; |
|
1612 |
if (b->name == primary_key_name) |
|
1613 |
return 1; |
|
1614 |
/* Sort keys don't containing partial segments before others */
|
|
1615 |
if ((a_flags ^ b_flags) & HA_KEY_HAS_PART_KEY_SEG) |
|
1616 |
return (a_flags & HA_KEY_HAS_PART_KEY_SEG) ? 1 : -1; |
|
1617 |
}
|
|
1618 |
else if (b_flags & HA_NOSAME) |
|
1619 |
return 1; // Prefer b |
|
1620 |
||
1621 |
/*
|
|
1622 |
Prefer original key order. usable_key_parts contains here
|
|
1623 |
the original key position.
|
|
1624 |
*/
|
|
1625 |
return ((a->usable_key_parts < b->usable_key_parts) ? -1 : |
|
1626 |
(a->usable_key_parts > b->usable_key_parts) ? 1 : |
|
1627 |
0); |
|
1628 |
}
|
|
1629 |
||
1630 |
/*
|
|
1631 |
Check TYPELIB (set or enum) for duplicates
|
|
1632 |
||
1633 |
SYNOPSIS
|
|
1634 |
check_duplicates_in_interval()
|
|
1635 |
set_or_name "SET" or "ENUM" string for warning message
|
|
1636 |
name name of the checked column
|
|
1637 |
typelib list of values for the column
|
|
1638 |
dup_val_count returns count of duplicate elements
|
|
1639 |
||
1640 |
DESCRIPTION
|
|
1641 |
This function prints an warning for each value in list
|
|
1642 |
which has some duplicates on its right
|
|
1643 |
||
1644 |
RETURN VALUES
|
|
1645 |
0 ok
|
|
1646 |
1 Error
|
|
1647 |
*/
|
|
1648 |
||
1649 |
bool check_duplicates_in_interval(const char *set_or_name, |
|
1650 |
const char *name, TYPELIB *typelib, |
|
1651 |
CHARSET_INFO *cs, unsigned int *dup_val_count) |
|
1652 |
{
|
|
1653 |
TYPELIB tmp= *typelib; |
|
1654 |
const char **cur_value= typelib->type_names; |
|
1655 |
unsigned int *cur_length= typelib->type_lengths; |
|
1656 |
*dup_val_count= 0; |
|
1657 |
||
1658 |
for ( ; tmp.count > 1; cur_value++, cur_length++) |
|
1659 |
{
|
|
1660 |
tmp.type_names++; |
|
1661 |
tmp.type_lengths++; |
|
1662 |
tmp.count--; |
|
1663 |
if (find_type2(&tmp, (const char*)*cur_value, *cur_length, cs)) |
|
1664 |
{
|
|
1665 |
my_error(ER_DUPLICATED_VALUE_IN_TYPE, MYF(0), |
|
1666 |
name,*cur_value,set_or_name); |
|
1667 |
return 1; |
|
1668 |
}
|
|
1669 |
}
|
|
1670 |
return 0; |
|
1671 |
}
|
|
1672 |
||
1673 |
||
1674 |
/*
|
|
1675 |
Check TYPELIB (set or enum) max and total lengths
|
|
1676 |
||
1677 |
SYNOPSIS
|
|
1678 |
calculate_interval_lengths()
|
|
1679 |
cs charset+collation pair of the interval
|
|
1680 |
typelib list of values for the column
|
|
1681 |
max_length length of the longest item
|
|
1682 |
tot_length sum of the item lengths
|
|
1683 |
||
1684 |
DESCRIPTION
|
|
1685 |
After this function call:
|
|
1686 |
- ENUM uses max_length
|
|
1687 |
- SET uses tot_length.
|
|
1688 |
||
1689 |
RETURN VALUES
|
|
1690 |
void
|
|
1691 |
*/
|
|
1692 |
void calculate_interval_lengths(CHARSET_INFO *cs, TYPELIB *interval, |
|
1693 |
uint32 *max_length, uint32 *tot_length) |
|
1694 |
{
|
|
1695 |
const char **pos; |
|
1696 |
uint *len; |
|
1697 |
*max_length= *tot_length= 0; |
|
1698 |
for (pos= interval->type_names, len= interval->type_lengths; |
|
1699 |
*pos ; pos++, len++) |
|
1700 |
{
|
|
1701 |
uint length= cs->cset->numchars(cs, *pos, *pos + *len); |
|
1702 |
*tot_length+= length; |
|
1703 |
set_if_bigger(*max_length, (uint32)length); |
|
1704 |
}
|
|
1705 |
}
|
|
1706 |
||
1707 |
||
1708 |
/*
|
|
1709 |
Prepare a create_table instance for packing
|
|
1710 |
||
1711 |
SYNOPSIS
|
|
1712 |
prepare_create_field()
|
|
1713 |
sql_field field to prepare for packing
|
|
1714 |
blob_columns count for BLOBs
|
|
1715 |
timestamps count for timestamps
|
|
1716 |
table_flags table flags
|
|
1717 |
||
1718 |
DESCRIPTION
|
|
1719 |
This function prepares a Create_field instance.
|
|
1720 |
Fields such as pack_flag are valid after this call.
|
|
1721 |
||
1722 |
RETURN VALUES
|
|
1723 |
0 ok
|
|
1724 |
1 Error
|
|
1725 |
*/
|
|
1726 |
||
1727 |
int prepare_create_field(Create_field *sql_field, |
|
1728 |
uint *blob_columns, |
|
1729 |
int *timestamps, int *timestamps_with_niladic, |
|
1730 |
longlong table_flags) |
|
1731 |
{
|
|
1732 |
unsigned int dup_val_count; |
|
1733 |
DBUG_ENTER("prepare_field"); |
|
1734 |
||
1735 |
/*
|
|
1736 |
This code came from mysql_prepare_create_table.
|
|
1737 |
Indent preserved to make patching easier
|
|
1738 |
*/
|
|
1739 |
DBUG_ASSERT(sql_field->charset); |
|
1740 |
||
1741 |
switch (sql_field->sql_type) { |
|
1742 |
case MYSQL_TYPE_BLOB: |
|
1743 |
case MYSQL_TYPE_MEDIUM_BLOB: |
|
1744 |
case MYSQL_TYPE_TINY_BLOB: |
|
1745 |
case MYSQL_TYPE_LONG_BLOB: |
|
1746 |
sql_field->pack_flag=FIELDFLAG_BLOB | |
|
1747 |
pack_length_to_packflag(sql_field->pack_length - |
|
1748 |
portable_sizeof_char_ptr); |
|
1749 |
if (sql_field->charset->state & MY_CS_BINSORT) |
|
1750 |
sql_field->pack_flag|=FIELDFLAG_BINARY; |
|
1751 |
sql_field->length=8; // Unireg field length |
|
1752 |
sql_field->unireg_check=Field::BLOB_FIELD; |
|
1753 |
(*blob_columns)++; |
|
1754 |
break; |
|
1755 |
case MYSQL_TYPE_VARCHAR: |
|
1756 |
#ifndef QQ_ALL_HANDLERS_SUPPORT_VARCHAR
|
|
1757 |
if (table_flags & HA_NO_VARCHAR) |
|
1758 |
{
|
|
1759 |
/* convert VARCHAR to CHAR because handler is not yet up to date */
|
|
1760 |
sql_field->sql_type= MYSQL_TYPE_VAR_STRING; |
|
1761 |
sql_field->pack_length= calc_pack_length(sql_field->sql_type, |
|
1762 |
(uint) sql_field->length); |
|
1763 |
if ((sql_field->length / sql_field->charset->mbmaxlen) > |
|
1764 |
MAX_FIELD_CHARLENGTH) |
|
1765 |
{
|
|
1766 |
my_printf_error(ER_TOO_BIG_FIELDLENGTH, ER(ER_TOO_BIG_FIELDLENGTH), |
|
1767 |
MYF(0), sql_field->field_name, MAX_FIELD_CHARLENGTH); |
|
1768 |
DBUG_RETURN(1); |
|
1769 |
}
|
|
1770 |
}
|
|
1771 |
#endif
|
|
1772 |
/* fall through */
|
|
1773 |
case MYSQL_TYPE_STRING: |
|
1774 |
sql_field->pack_flag=0; |
|
1775 |
if (sql_field->charset->state & MY_CS_BINSORT) |
|
1776 |
sql_field->pack_flag|=FIELDFLAG_BINARY; |
|
1777 |
break; |
|
1778 |
case MYSQL_TYPE_ENUM: |
|
1779 |
sql_field->pack_flag=pack_length_to_packflag(sql_field->pack_length) | |
|
1780 |
FIELDFLAG_INTERVAL; |
|
1781 |
if (sql_field->charset->state & MY_CS_BINSORT) |
|
1782 |
sql_field->pack_flag|=FIELDFLAG_BINARY; |
|
1783 |
sql_field->unireg_check=Field::INTERVAL_FIELD; |
|
1784 |
if (check_duplicates_in_interval("ENUM",sql_field->field_name, |
|
1785 |
sql_field->interval, |
|
1786 |
sql_field->charset, &dup_val_count)) |
|
1787 |
DBUG_RETURN(1); |
|
1788 |
break; |
|
1789 |
case MYSQL_TYPE_SET: |
|
1790 |
sql_field->pack_flag=pack_length_to_packflag(sql_field->pack_length) | |
|
1791 |
FIELDFLAG_BITFIELD; |
|
1792 |
if (sql_field->charset->state & MY_CS_BINSORT) |
|
1793 |
sql_field->pack_flag|=FIELDFLAG_BINARY; |
|
1794 |
sql_field->unireg_check=Field::BIT_FIELD; |
|
1795 |
if (check_duplicates_in_interval("SET",sql_field->field_name, |
|
1796 |
sql_field->interval, |
|
1797 |
sql_field->charset, &dup_val_count)) |
|
1798 |
DBUG_RETURN(1); |
|
1799 |
/* Check that count of unique members is not more then 64 */
|
|
1800 |
if (sql_field->interval->count - dup_val_count > sizeof(longlong)*8) |
|
1801 |
{
|
|
1802 |
my_error(ER_TOO_BIG_SET, MYF(0), sql_field->field_name); |
|
1803 |
DBUG_RETURN(1); |
|
1804 |
}
|
|
1805 |
break; |
|
1806 |
case MYSQL_TYPE_DATE: // Rest of string types |
|
1807 |
case MYSQL_TYPE_NEWDATE: |
|
1808 |
case MYSQL_TYPE_TIME: |
|
1809 |
case MYSQL_TYPE_DATETIME: |
|
1810 |
case MYSQL_TYPE_NULL: |
|
1811 |
sql_field->pack_flag=f_settype((uint) sql_field->sql_type); |
|
1812 |
break; |
|
1813 |
case MYSQL_TYPE_BIT: |
|
1814 |
/*
|
|
1815 |
We have sql_field->pack_flag already set here, see
|
|
1816 |
mysql_prepare_create_table().
|
|
1817 |
*/
|
|
1818 |
break; |
|
1819 |
case MYSQL_TYPE_NEWDECIMAL: |
|
1820 |
sql_field->pack_flag=(FIELDFLAG_NUMBER | |
|
1821 |
(sql_field->flags & UNSIGNED_FLAG ? 0 : |
|
1822 |
FIELDFLAG_DECIMAL) | |
|
1823 |
(sql_field->flags & ZEROFILL_FLAG ? |
|
1824 |
FIELDFLAG_ZEROFILL : 0) | |
|
1825 |
(sql_field->decimals << FIELDFLAG_DEC_SHIFT)); |
|
1826 |
break; |
|
1827 |
case MYSQL_TYPE_TIMESTAMP: |
|
1828 |
/* We should replace old TIMESTAMP fields with their newer analogs */
|
|
1829 |
if (sql_field->unireg_check == Field::TIMESTAMP_OLD_FIELD) |
|
1830 |
{
|
|
1831 |
if (!*timestamps) |
|
1832 |
{
|
|
1833 |
sql_field->unireg_check= Field::TIMESTAMP_DNUN_FIELD; |
|
1834 |
(*timestamps_with_niladic)++; |
|
1835 |
}
|
|
1836 |
else
|
|
1837 |
sql_field->unireg_check= Field::NONE; |
|
1838 |
}
|
|
1839 |
else if (sql_field->unireg_check != Field::NONE) |
|
1840 |
(*timestamps_with_niladic)++; |
|
1841 |
||
1842 |
(*timestamps)++; |
|
1843 |
/* fall-through */
|
|
1844 |
default: |
|
1845 |
sql_field->pack_flag=(FIELDFLAG_NUMBER | |
|
1846 |
(sql_field->flags & UNSIGNED_FLAG ? 0 : |
|
1847 |
FIELDFLAG_DECIMAL) | |
|
1848 |
(sql_field->flags & ZEROFILL_FLAG ? |
|
1849 |
FIELDFLAG_ZEROFILL : 0) | |
|
1850 |
f_settype((uint) sql_field->sql_type) | |
|
1851 |
(sql_field->decimals << FIELDFLAG_DEC_SHIFT)); |
|
1852 |
break; |
|
1853 |
}
|
|
1854 |
if (!(sql_field->flags & NOT_NULL_FLAG)) |
|
1855 |
sql_field->pack_flag|= FIELDFLAG_MAYBE_NULL; |
|
1856 |
if (sql_field->flags & NO_DEFAULT_VALUE_FLAG) |
|
1857 |
sql_field->pack_flag|= FIELDFLAG_NO_DEFAULT; |
|
1858 |
DBUG_RETURN(0); |
|
1859 |
}
|
|
1860 |
||
1861 |
/*
|
|
1862 |
Preparation for table creation
|
|
1863 |
||
1864 |
SYNOPSIS
|
|
1865 |
mysql_prepare_create_table()
|
|
1866 |
thd Thread object.
|
|
1867 |
create_info Create information (like MAX_ROWS).
|
|
1868 |
alter_info List of columns and indexes to create
|
|
1869 |
tmp_table If a temporary table is to be created.
|
|
1870 |
db_options INOUT Table options (like HA_OPTION_PACK_RECORD).
|
|
1871 |
file The handler for the new table.
|
|
1872 |
key_info_buffer OUT An array of KEY structs for the indexes.
|
|
1873 |
key_count OUT The number of elements in the array.
|
|
1874 |
select_field_count The number of fields coming from a select table.
|
|
1875 |
||
1876 |
DESCRIPTION
|
|
1877 |
Prepares the table and key structures for table creation.
|
|
1878 |
||
1879 |
NOTES
|
|
1880 |
sets create_info->varchar if the table has a varchar
|
|
1881 |
||
1882 |
RETURN VALUES
|
|
1883 |
FALSE OK
|
|
1884 |
TRUE error
|
|
1885 |
*/
|
|
1886 |
||
1887 |
static int |
|
1888 |
mysql_prepare_create_table(THD *thd, HA_CREATE_INFO *create_info, |
|
1889 |
Alter_info *alter_info, |
|
1890 |
bool tmp_table, |
|
1891 |
uint *db_options, |
|
1892 |
handler *file, KEY **key_info_buffer, |
|
1893 |
uint *key_count, int select_field_count) |
|
1894 |
{
|
|
1895 |
const char *key_name; |
|
1896 |
Create_field *sql_field,*dup_field; |
|
1897 |
uint field,null_fields,blob_columns,max_key_length; |
|
1898 |
ulong record_offset= 0; |
|
1899 |
KEY *key_info; |
|
1900 |
KEY_PART_INFO *key_part_info; |
|
1901 |
int timestamps= 0, timestamps_with_niladic= 0; |
|
1902 |
int field_no,dup_no; |
|
1903 |
int select_field_pos,auto_increment=0; |
|
1904 |
List_iterator<Create_field> it(alter_info->create_list); |
|
1905 |
List_iterator<Create_field> it2(alter_info->create_list); |
|
1906 |
uint total_uneven_bit_length= 0; |
|
1907 |
DBUG_ENTER("mysql_prepare_create_table"); |
|
1908 |
||
1909 |
select_field_pos= alter_info->create_list.elements - select_field_count; |
|
1910 |
null_fields=blob_columns=0; |
|
1911 |
create_info->varchar= 0; |
|
1912 |
max_key_length= file->max_key_length(); |
|
1913 |
||
1914 |
for (field_no=0; (sql_field=it++) ; field_no++) |
|
1915 |
{
|
|
1916 |
CHARSET_INFO *save_cs; |
|
1917 |
||
1918 |
/*
|
|
1919 |
Initialize length from its original value (number of characters),
|
|
1920 |
which was set in the parser. This is necessary if we're
|
|
1921 |
executing a prepared statement for the second time.
|
|
1922 |
*/
|
|
1923 |
sql_field->length= sql_field->char_length; |
|
1924 |
if (!sql_field->charset) |
|
1925 |
sql_field->charset= create_info->default_table_charset; |
|
1926 |
/*
|
|
1927 |
table_charset is set in ALTER TABLE if we want change character set
|
|
1928 |
for all varchar/char columns.
|
|
1929 |
But the table charset must not affect the BLOB fields, so don't
|
|
1930 |
allow to change my_charset_bin to somethig else.
|
|
1931 |
*/
|
|
1932 |
if (create_info->table_charset && sql_field->charset != &my_charset_bin) |
|
1933 |
sql_field->charset= create_info->table_charset; |
|
1934 |
||
1935 |
save_cs= sql_field->charset; |
|
1936 |
if ((sql_field->flags & BINCMP_FLAG) && |
|
1937 |
!(sql_field->charset= get_charset_by_csname(sql_field->charset->csname, |
|
1938 |
MY_CS_BINSORT,MYF(0)))) |
|
1939 |
{
|
|
1940 |
char tmp[64]; |
|
1941 |
strmake(strmake(tmp, save_cs->csname, sizeof(tmp)-4), |
|
1942 |
STRING_WITH_LEN("_bin")); |
|
1943 |
my_error(ER_UNKNOWN_COLLATION, MYF(0), tmp); |
|
1944 |
DBUG_RETURN(TRUE); |
|
1945 |
}
|
|
1946 |
||
1947 |
/*
|
|
1948 |
Convert the default value from client character
|
|
1949 |
set into the column character set if necessary.
|
|
1950 |
*/
|
|
1951 |
if (sql_field->def && |
|
1952 |
save_cs != sql_field->def->collation.collation && |
|
1953 |
(sql_field->sql_type == MYSQL_TYPE_VAR_STRING || |
|
1954 |
sql_field->sql_type == MYSQL_TYPE_STRING || |
|
1955 |
sql_field->sql_type == MYSQL_TYPE_SET || |
|
1956 |
sql_field->sql_type == MYSQL_TYPE_ENUM)) |
|
1957 |
{
|
|
1958 |
/*
|
|
1959 |
Starting from 5.1 we work here with a copy of Create_field
|
|
1960 |
created by the caller, not with the instance that was
|
|
1961 |
originally created during parsing. It's OK to create
|
|
1962 |
a temporary item and initialize with it a member of the
|
|
1963 |
copy -- this item will be thrown away along with the copy
|
|
1964 |
at the end of execution, and thus not introduce a dangling
|
|
1965 |
pointer in the parsed tree of a prepared statement or a
|
|
1966 |
stored procedure statement.
|
|
1967 |
*/
|
|
1968 |
sql_field->def= sql_field->def->safe_charset_converter(save_cs); |
|
1969 |
||
1970 |
if (sql_field->def == NULL) |
|
1971 |
{
|
|
1972 |
/* Could not convert */
|
|
1973 |
my_error(ER_INVALID_DEFAULT, MYF(0), sql_field->field_name); |
|
1974 |
DBUG_RETURN(TRUE); |
|
1975 |
}
|
|
1976 |
}
|
|
1977 |
||
1978 |
if (sql_field->sql_type == MYSQL_TYPE_SET || |
|
1979 |
sql_field->sql_type == MYSQL_TYPE_ENUM) |
|
1980 |
{
|
|
1981 |
uint32 dummy; |
|
1982 |
CHARSET_INFO *cs= sql_field->charset; |
|
1983 |
TYPELIB *interval= sql_field->interval; |
|
1984 |
||
1985 |
/*
|
|
1986 |
Create typelib from interval_list, and if necessary
|
|
1987 |
convert strings from client character set to the
|
|
1988 |
column character set.
|
|
1989 |
*/
|
|
1990 |
if (!interval) |
|
1991 |
{
|
|
1992 |
/*
|
|
1993 |
Create the typelib in runtime memory - we will free the
|
|
1994 |
occupied memory at the same time when we free this
|
|
1995 |
sql_field -- at the end of execution.
|
|
1996 |
*/
|
|
1997 |
interval= sql_field->interval= typelib(thd->mem_root, |
|
1998 |
sql_field->interval_list); |
|
1999 |
List_iterator<String> int_it(sql_field->interval_list); |
|
2000 |
String conv, *tmp; |
|
2001 |
char comma_buf[4]; |
|
2002 |
int comma_length= cs->cset->wc_mb(cs, ',', (uchar*) comma_buf, |
|
2003 |
(uchar*) comma_buf + |
|
2004 |
sizeof(comma_buf)); |
|
2005 |
DBUG_ASSERT(comma_length > 0); |
|
2006 |
for (uint i= 0; (tmp= int_it++); i++) |
|
2007 |
{
|
|
2008 |
uint lengthsp; |
|
2009 |
if (String::needs_conversion(tmp->length(), tmp->charset(), |
|
2010 |
cs, &dummy)) |
|
2011 |
{
|
|
2012 |
uint cnv_errs; |
|
2013 |
conv.copy(tmp->ptr(), tmp->length(), tmp->charset(), cs, &cnv_errs); |
|
2014 |
interval->type_names[i]= strmake_root(thd->mem_root, conv.ptr(), |
|
2015 |
conv.length()); |
|
2016 |
interval->type_lengths[i]= conv.length(); |
|
2017 |
}
|
|
2018 |
||
2019 |
// Strip trailing spaces.
|
|
2020 |
lengthsp= cs->cset->lengthsp(cs, interval->type_names[i], |
|
2021 |
interval->type_lengths[i]); |
|
2022 |
interval->type_lengths[i]= lengthsp; |
|
2023 |
((uchar *)interval->type_names[i])[lengthsp]= '\0'; |
|
2024 |
if (sql_field->sql_type == MYSQL_TYPE_SET) |
|
2025 |
{
|
|
2026 |
if (cs->coll->instr(cs, interval->type_names[i], |
|
2027 |
interval->type_lengths[i], |
|
2028 |
comma_buf, comma_length, NULL, 0)) |
|
2029 |
{
|
|
2030 |
my_error(ER_ILLEGAL_VALUE_FOR_TYPE, MYF(0), "set", tmp->ptr()); |
|
2031 |
DBUG_RETURN(TRUE); |
|
2032 |
}
|
|
2033 |
}
|
|
2034 |
}
|
|
2035 |
sql_field->interval_list.empty(); // Don't need interval_list anymore |
|
2036 |
}
|
|
2037 |
||
2038 |
if (sql_field->sql_type == MYSQL_TYPE_SET) |
|
2039 |
{
|
|
2040 |
uint32 field_length; |
|
2041 |
if (sql_field->def != NULL) |
|
2042 |
{
|
|
2043 |
char *not_used; |
|
2044 |
uint not_used2; |
|
2045 |
bool not_found= 0; |
|
2046 |
String str, *def= sql_field->def->val_str(&str); |
|
2047 |
if (def == NULL) /* SQL "NULL" maps to NULL */ |
|
2048 |
{
|
|
2049 |
if ((sql_field->flags & NOT_NULL_FLAG) != 0) |
|
2050 |
{
|
|
2051 |
my_error(ER_INVALID_DEFAULT, MYF(0), sql_field->field_name); |
|
2052 |
DBUG_RETURN(TRUE); |
|
2053 |
}
|
|
2054 |
||
2055 |
/* else, NULL is an allowed value */
|
|
2056 |
(void) find_set(interval, NULL, 0, |
|
2057 |
cs, ¬_used, ¬_used2, ¬_found); |
|
2058 |
}
|
|
2059 |
else /* not NULL */ |
|
2060 |
{
|
|
2061 |
(void) find_set(interval, def->ptr(), def->length(), |
|
2062 |
cs, ¬_used, ¬_used2, ¬_found); |
|
2063 |
}
|
|
2064 |
||
2065 |
if (not_found) |
|
2066 |
{
|
|
2067 |
my_error(ER_INVALID_DEFAULT, MYF(0), sql_field->field_name); |
|
2068 |
DBUG_RETURN(TRUE); |
|
2069 |
}
|
|
2070 |
}
|
|
2071 |
calculate_interval_lengths(cs, interval, &dummy, &field_length); |
|
2072 |
sql_field->length= field_length + (interval->count - 1); |
|
2073 |
}
|
|
2074 |
else /* MYSQL_TYPE_ENUM */ |
|
2075 |
{
|
|
2076 |
uint32 field_length; |
|
2077 |
DBUG_ASSERT(sql_field->sql_type == MYSQL_TYPE_ENUM); |
|
2078 |
if (sql_field->def != NULL) |
|
2079 |
{
|
|
2080 |
String str, *def= sql_field->def->val_str(&str); |
|
2081 |
if (def == NULL) /* SQL "NULL" maps to NULL */ |
|
2082 |
{
|
|
2083 |
if ((sql_field->flags & NOT_NULL_FLAG) != 0) |
|
2084 |
{
|
|
2085 |
my_error(ER_INVALID_DEFAULT, MYF(0), sql_field->field_name); |
|
2086 |
DBUG_RETURN(TRUE); |
|
2087 |
}
|
|
2088 |
||
2089 |
/* else, the defaults yield the correct length for NULLs. */
|
|
2090 |
}
|
|
2091 |
else /* not NULL */ |
|
2092 |
{
|
|
2093 |
def->length(cs->cset->lengthsp(cs, def->ptr(), def->length())); |
|
2094 |
if (find_type2(interval, def->ptr(), def->length(), cs) == 0) /* not found */ |
|
2095 |
{
|
|
2096 |
my_error(ER_INVALID_DEFAULT, MYF(0), sql_field->field_name); |
|
2097 |
DBUG_RETURN(TRUE); |
|
2098 |
}
|
|
2099 |
}
|
|
2100 |
}
|
|
2101 |
calculate_interval_lengths(cs, interval, &field_length, &dummy); |
|
2102 |
sql_field->length= field_length; |
|
2103 |
}
|
|
2104 |
set_if_smaller(sql_field->length, MAX_FIELD_WIDTH-1); |
|
2105 |
}
|
|
2106 |
||
2107 |
if (sql_field->sql_type == MYSQL_TYPE_BIT) |
|
2108 |
{
|
|
2109 |
sql_field->pack_flag= FIELDFLAG_NUMBER; |
|
2110 |
if (file->ha_table_flags() & HA_CAN_BIT_FIELD) |
|
2111 |
total_uneven_bit_length+= sql_field->length & 7; |
|
2112 |
else
|
|
2113 |
sql_field->pack_flag|= FIELDFLAG_TREAT_BIT_AS_CHAR; |
|
2114 |
}
|
|
2115 |
||
2116 |
sql_field->create_length_to_internal_length(); |
|
2117 |
if (prepare_blob_field(thd, sql_field)) |
|
2118 |
DBUG_RETURN(TRUE); |
|
2119 |
||
2120 |
if (!(sql_field->flags & NOT_NULL_FLAG)) |
|
2121 |
null_fields++; |
|
2122 |
||
2123 |
if (check_column_name(sql_field->field_name)) |
|
2124 |
{
|
|
2125 |
my_error(ER_WRONG_COLUMN_NAME, MYF(0), sql_field->field_name); |
|
2126 |
DBUG_RETURN(TRUE); |
|
2127 |
}
|
|
2128 |
||
2129 |
/* Check if we have used the same field name before */
|
|
2130 |
for (dup_no=0; (dup_field=it2++) != sql_field; dup_no++) |
|
2131 |
{
|
|
2132 |
if (my_strcasecmp(system_charset_info, |
|
2133 |
sql_field->field_name, |
|
2134 |
dup_field->field_name) == 0) |
|
2135 |
{
|
|
2136 |
/*
|
|
2137 |
If this was a CREATE ... SELECT statement, accept a field
|
|
2138 |
redefinition if we are changing a field in the SELECT part
|
|
2139 |
*/
|
|
2140 |
if (field_no < select_field_pos || dup_no >= select_field_pos) |
|
2141 |
{
|
|
2142 |
my_error(ER_DUP_FIELDNAME, MYF(0), sql_field->field_name); |
|
2143 |
DBUG_RETURN(TRUE); |
|
2144 |
}
|
|
2145 |
else
|
|
2146 |
{
|
|
2147 |
/* Field redefined */
|
|
2148 |
sql_field->def= dup_field->def; |
|
2149 |
sql_field->sql_type= dup_field->sql_type; |
|
2150 |
sql_field->charset= (dup_field->charset ? |
|
2151 |
dup_field->charset : |
|
2152 |
create_info->default_table_charset); |
|
2153 |
sql_field->length= dup_field->char_length; |
|
2154 |
sql_field->pack_length= dup_field->pack_length; |
|
2155 |
sql_field->key_length= dup_field->key_length; |
|
2156 |
sql_field->decimals= dup_field->decimals; |
|
2157 |
sql_field->create_length_to_internal_length(); |
|
2158 |
sql_field->unireg_check= dup_field->unireg_check; |
|
2159 |
/*
|
|
2160 |
We're making one field from two, the result field will have
|
|
2161 |
dup_field->flags as flags. If we've incremented null_fields
|
|
2162 |
because of sql_field->flags, decrement it back.
|
|
2163 |
*/
|
|
2164 |
if (!(sql_field->flags & NOT_NULL_FLAG)) |
|
2165 |
null_fields--; |
|
2166 |
sql_field->flags= dup_field->flags; |
|
2167 |
sql_field->interval= dup_field->interval; |
|
2168 |
it2.remove(); // Remove first (create) definition |
|
2169 |
select_field_pos--; |
|
2170 |
break; |
|
2171 |
}
|
|
2172 |
}
|
|
2173 |
}
|
|
2174 |
/* Don't pack rows in old tables if the user has requested this */
|
|
2175 |
if ((sql_field->flags & BLOB_FLAG) || |
|
2176 |
(sql_field->sql_type == MYSQL_TYPE_VARCHAR && create_info->row_type != ROW_TYPE_FIXED)) |
|
2177 |
(*db_options)|= HA_OPTION_PACK_RECORD; |
|
2178 |
it2.rewind(); |
|
2179 |
}
|
|
2180 |
||
2181 |
/* record_offset will be increased with 'length-of-null-bits' later */
|
|
2182 |
record_offset= 0; |
|
2183 |
null_fields+= total_uneven_bit_length; |
|
2184 |
||
2185 |
it.rewind(); |
|
2186 |
while ((sql_field=it++)) |
|
2187 |
{
|
|
2188 |
DBUG_ASSERT(sql_field->charset != 0); |
|
2189 |
||
2190 |
if (prepare_create_field(sql_field, &blob_columns, |
|
2191 |
×tamps, ×tamps_with_niladic, |
|
2192 |
file->ha_table_flags())) |
|
2193 |
DBUG_RETURN(TRUE); |
|
2194 |
if (sql_field->sql_type == MYSQL_TYPE_VARCHAR) |
|
2195 |
create_info->varchar= TRUE; |
|
2196 |
sql_field->offset= record_offset; |
|
2197 |
if (MTYP_TYPENR(sql_field->unireg_check) == Field::NEXT_NUMBER) |
|
2198 |
auto_increment++; |
|
2199 |
record_offset+= sql_field->pack_length; |
|
2200 |
}
|
|
2201 |
if (timestamps_with_niladic > 1) |
|
2202 |
{
|
|
2203 |
my_message(ER_TOO_MUCH_AUTO_TIMESTAMP_COLS, |
|
2204 |
ER(ER_TOO_MUCH_AUTO_TIMESTAMP_COLS), MYF(0)); |
|
2205 |
DBUG_RETURN(TRUE); |
|
2206 |
}
|
|
2207 |
if (auto_increment > 1) |
|
2208 |
{
|
|
2209 |
my_message(ER_WRONG_AUTO_KEY, ER(ER_WRONG_AUTO_KEY), MYF(0)); |
|
2210 |
DBUG_RETURN(TRUE); |
|
2211 |
}
|
|
2212 |
if (auto_increment && |
|
2213 |
(file->ha_table_flags() & HA_NO_AUTO_INCREMENT)) |
|
2214 |
{
|
|
2215 |
my_message(ER_TABLE_CANT_HANDLE_AUTO_INCREMENT, |
|
2216 |
ER(ER_TABLE_CANT_HANDLE_AUTO_INCREMENT), MYF(0)); |
|
2217 |
DBUG_RETURN(TRUE); |
|
2218 |
}
|
|
2219 |
||
2220 |
if (blob_columns && (file->ha_table_flags() & HA_NO_BLOBS)) |
|
2221 |
{
|
|
2222 |
my_message(ER_TABLE_CANT_HANDLE_BLOB, ER(ER_TABLE_CANT_HANDLE_BLOB), |
|
2223 |
MYF(0)); |
|
2224 |
DBUG_RETURN(TRUE); |
|
2225 |
}
|
|
2226 |
||
2227 |
/* Create keys */
|
|
2228 |
||
2229 |
List_iterator<Key> key_iterator(alter_info->key_list); |
|
2230 |
List_iterator<Key> key_iterator2(alter_info->key_list); |
|
2231 |
uint key_parts=0, fk_key_count=0; |
|
2232 |
bool primary_key=0,unique_key=0; |
|
2233 |
Key *key, *key2; |
|
2234 |
uint tmp, key_number; |
|
2235 |
/* special marker for keys to be ignored */
|
|
2236 |
static char ignore_key[1]; |
|
2237 |
||
2238 |
/* Calculate number of key segements */
|
|
2239 |
*key_count= 0; |
|
2240 |
||
2241 |
while ((key=key_iterator++)) |
|
2242 |
{
|
|
2243 |
DBUG_PRINT("info", ("key name: '%s' type: %d", key->name.str ? key->name.str : |
|
2244 |
"(none)" , key->type)); |
|
2245 |
if (key->type == Key::FOREIGN_KEY) |
|
2246 |
{
|
|
2247 |
fk_key_count++; |
|
2248 |
Foreign_key *fk_key= (Foreign_key*) key; |
|
2249 |
if (fk_key->ref_columns.elements && |
|
2250 |
fk_key->ref_columns.elements != fk_key->columns.elements) |
|
2251 |
{
|
|
2252 |
my_error(ER_WRONG_FK_DEF, MYF(0), |
|
2253 |
(fk_key->name.str ? fk_key->name.str : |
|
2254 |
"foreign key without name"), |
|
2255 |
ER(ER_KEY_REF_DO_NOT_MATCH_TABLE_REF)); |
|
2256 |
DBUG_RETURN(TRUE); |
|
2257 |
}
|
|
2258 |
continue; |
|
2259 |
}
|
|
2260 |
(*key_count)++; |
|
2261 |
tmp=file->max_key_parts(); |
|
2262 |
if (key->columns.elements > tmp) |
|
2263 |
{
|
|
2264 |
my_error(ER_TOO_MANY_KEY_PARTS,MYF(0),tmp); |
|
2265 |
DBUG_RETURN(TRUE); |
|
2266 |
}
|
|
2267 |
if (check_identifier_name(&key->name, ER_TOO_LONG_IDENT)) |
|
2268 |
DBUG_RETURN(TRUE); |
|
2269 |
key_iterator2.rewind (); |
|
2270 |
if (key->type != Key::FOREIGN_KEY) |
|
2271 |
{
|
|
2272 |
while ((key2 = key_iterator2++) != key) |
|
2273 |
{
|
|
2274 |
/*
|
|
2275 |
foreign_key_prefix(key, key2) returns 0 if key or key2, or both, is
|
|
2276 |
'generated', and a generated key is a prefix of the other key.
|
|
2277 |
Then we do not need the generated shorter key.
|
|
2278 |
*/
|
|
2279 |
if ((key2->type != Key::FOREIGN_KEY && |
|
2280 |
key2->name.str != ignore_key && |
|
2281 |
!foreign_key_prefix(key, key2))) |
|
2282 |
{
|
|
2283 |
/* TODO: issue warning message */
|
|
2284 |
/* mark that the generated key should be ignored */
|
|
2285 |
if (!key2->generated || |
|
2286 |
(key->generated && key->columns.elements < |
|
2287 |
key2->columns.elements)) |
|
2288 |
key->name.str= ignore_key; |
|
2289 |
else
|
|
2290 |
{
|
|
2291 |
key2->name.str= ignore_key; |
|
2292 |
key_parts-= key2->columns.elements; |
|
2293 |
(*key_count)--; |
|
2294 |
}
|
|
2295 |
break; |
|
2296 |
}
|
|
2297 |
}
|
|
2298 |
}
|
|
2299 |
if (key->name.str != ignore_key) |
|
2300 |
key_parts+=key->columns.elements; |
|
2301 |
else
|
|
2302 |
(*key_count)--; |
|
2303 |
if (key->name.str && !tmp_table && (key->type != Key::PRIMARY) && |
|
2304 |
!my_strcasecmp(system_charset_info,key->name.str, primary_key_name)) |
|
2305 |
{
|
|
2306 |
my_error(ER_WRONG_NAME_FOR_INDEX, MYF(0), key->name.str); |
|
2307 |
DBUG_RETURN(TRUE); |
|
2308 |
}
|
|
2309 |
}
|
|
2310 |
tmp=file->max_keys(); |
|
2311 |
if (*key_count > tmp) |
|
2312 |
{
|
|
2313 |
my_error(ER_TOO_MANY_KEYS,MYF(0),tmp); |
|
2314 |
DBUG_RETURN(TRUE); |
|
2315 |
}
|
|
2316 |
||
2317 |
(*key_info_buffer)= key_info= (KEY*) sql_calloc(sizeof(KEY) * (*key_count)); |
|
2318 |
key_part_info=(KEY_PART_INFO*) sql_calloc(sizeof(KEY_PART_INFO)*key_parts); |
|
2319 |
if (!*key_info_buffer || ! key_part_info) |
|
2320 |
DBUG_RETURN(TRUE); // Out of memory |
|
2321 |
||
2322 |
key_iterator.rewind(); |
|
2323 |
key_number=0; |
|
2324 |
for (; (key=key_iterator++) ; key_number++) |
|
2325 |
{
|
|
2326 |
uint key_length=0; |
|
2327 |
Key_part_spec *column; |
|
2328 |
||
2329 |
if (key->name.str == ignore_key) |
|
2330 |
{
|
|
2331 |
/* ignore redundant keys */
|
|
2332 |
do
|
|
2333 |
key=key_iterator++; |
|
2334 |
while (key && key->name.str == ignore_key); |
|
2335 |
if (!key) |
|
2336 |
break; |
|
2337 |
}
|
|
2338 |
||
2339 |
switch (key->type) { |
|
2340 |
case Key::MULTIPLE: |
|
2341 |
key_info->flags= 0; |
|
2342 |
break; |
|
2343 |
case Key::FOREIGN_KEY: |
|
2344 |
key_number--; // Skip this key |
|
2345 |
continue; |
|
2346 |
default: |
|
2347 |
key_info->flags = HA_NOSAME; |
|
2348 |
break; |
|
2349 |
}
|
|
2350 |
if (key->generated) |
|
2351 |
key_info->flags|= HA_GENERATED_KEY; |
|
2352 |
||
2353 |
key_info->key_parts=(uint8) key->columns.elements; |
|
2354 |
key_info->key_part=key_part_info; |
|
2355 |
key_info->usable_key_parts= key_number; |
|
2356 |
key_info->algorithm= key->key_create_info.algorithm; |
|
2357 |
||
2358 |
/* Take block size from key part or table part */
|
|
2359 |
/*
|
|
2360 |
TODO: Add warning if block size changes. We can't do it here, as
|
|
2361 |
this may depend on the size of the key
|
|
2362 |
*/
|
|
2363 |
key_info->block_size= (key->key_create_info.block_size ? |
|
2364 |
key->key_create_info.block_size : |
|
2365 |
create_info->key_block_size); |
|
2366 |
||
2367 |
if (key_info->block_size) |
|
2368 |
key_info->flags|= HA_USES_BLOCK_SIZE; |
|
2369 |
||
2370 |
uint tmp_len= system_charset_info->cset->charpos(system_charset_info, |
|
2371 |
key->key_create_info.comment.str, |
|
2372 |
key->key_create_info.comment.str + |
|
2373 |
key->key_create_info.comment.length, |
|
2374 |
INDEX_COMMENT_MAXLEN); |
|
2375 |
||
2376 |
if (tmp_len < key->key_create_info.comment.length) |
|
2377 |
{
|
|
2378 |
my_error(ER_WRONG_STRING_LENGTH, MYF(0), |
|
2379 |
key->key_create_info.comment.str,"INDEX COMMENT", |
|
2380 |
(uint) INDEX_COMMENT_MAXLEN); |
|
2381 |
DBUG_RETURN(-1); |
|
2382 |
}
|
|
2383 |
||
2384 |
key_info->comment.length= key->key_create_info.comment.length; |
|
2385 |
if (key_info->comment.length > 0) |
|
2386 |
{
|
|
2387 |
key_info->flags|= HA_USES_COMMENT; |
|
2388 |
key_info->comment.str= key->key_create_info.comment.str; |
|
2389 |
}
|
|
2390 |
||
2391 |
List_iterator<Key_part_spec> cols(key->columns), cols2(key->columns); |
|
2392 |
for (uint column_nr=0 ; (column=cols++) ; column_nr++) |
|
2393 |
{
|
|
2394 |
uint length; |
|
2395 |
Key_part_spec *dup_column; |
|
2396 |
||
2397 |
it.rewind(); |
|
2398 |
field=0; |
|
2399 |
while ((sql_field=it++) && |
|
2400 |
my_strcasecmp(system_charset_info, |
|
2401 |
column->field_name.str, |
|
2402 |
sql_field->field_name)) |
|
2403 |
field++; |
|
2404 |
if (!sql_field) |
|
2405 |
{
|
|
2406 |
my_error(ER_KEY_COLUMN_DOES_NOT_EXITS, MYF(0), column->field_name.str); |
|
2407 |
DBUG_RETURN(TRUE); |
|
2408 |
}
|
|
2409 |
while ((dup_column= cols2++) != column) |
|
2410 |
{
|
|
2411 |
if (!my_strcasecmp(system_charset_info, |
|
2412 |
column->field_name.str, dup_column->field_name.str)) |
|
2413 |
{
|
|
2414 |
my_printf_error(ER_DUP_FIELDNAME, |
|
2415 |
ER(ER_DUP_FIELDNAME),MYF(0), |
|
2416 |
column->field_name.str); |
|
2417 |
DBUG_RETURN(TRUE); |
|
2418 |
}
|
|
2419 |
}
|
|
2420 |
cols2.rewind(); |
|
2421 |
{
|
|
2422 |
column->length*= sql_field->charset->mbmaxlen; |
|
2423 |
||
2424 |
if (f_is_blob(sql_field->pack_flag)) |
|
2425 |
{
|
|
2426 |
if (!(file->ha_table_flags() & HA_CAN_INDEX_BLOBS)) |
|
2427 |
{
|
|
2428 |
my_error(ER_BLOB_USED_AS_KEY, MYF(0), column->field_name.str); |
|
2429 |
DBUG_RETURN(TRUE); |
|
2430 |
}
|
|
2431 |
if (!column->length) |
|
2432 |
{
|
|
2433 |
my_error(ER_BLOB_KEY_WITHOUT_LENGTH, MYF(0), column->field_name.str); |
|
2434 |
DBUG_RETURN(TRUE); |
|
2435 |
}
|
|
2436 |
}
|
|
2437 |
if (!(sql_field->flags & NOT_NULL_FLAG)) |
|
2438 |
{
|
|
2439 |
if (key->type == Key::PRIMARY) |
|
2440 |
{
|
|
2441 |
/* Implicitly set primary key fields to NOT NULL for ISO conf. */
|
|
2442 |
sql_field->flags|= NOT_NULL_FLAG; |
|
2443 |
sql_field->pack_flag&= ~FIELDFLAG_MAYBE_NULL; |
|
2444 |
null_fields--; |
|
2445 |
}
|
|
2446 |
else
|
|
2447 |
{
|
|
2448 |
key_info->flags|= HA_NULL_PART_KEY; |
|
2449 |
if (!(file->ha_table_flags() & HA_NULL_IN_KEY)) |
|
2450 |
{
|
|
2451 |
my_error(ER_NULL_COLUMN_IN_INDEX, MYF(0), column->field_name.str); |
|
2452 |
DBUG_RETURN(TRUE); |
|
2453 |
}
|
|
2454 |
}
|
|
2455 |
}
|
|
2456 |
if (MTYP_TYPENR(sql_field->unireg_check) == Field::NEXT_NUMBER) |
|
2457 |
{
|
|
2458 |
if (column_nr == 0 || (file->ha_table_flags() & HA_AUTO_PART_KEY)) |
|
2459 |
auto_increment--; // Field is used |
|
2460 |
}
|
|
2461 |
}
|
|
2462 |
||
2463 |
key_part_info->fieldnr= field; |
|
2464 |
key_part_info->offset= (uint16) sql_field->offset; |
|
2465 |
key_part_info->key_type=sql_field->pack_flag; |
|
2466 |
length= sql_field->key_length; |
|
2467 |
||
2468 |
if (column->length) |
|
2469 |
{
|
|
2470 |
if (f_is_blob(sql_field->pack_flag)) |
|
2471 |
{
|
|
2472 |
if ((length=column->length) > max_key_length || |
|
2473 |
length > file->max_key_part_length()) |
|
2474 |
{
|
|
2475 |
length=min(max_key_length, file->max_key_part_length()); |
|
2476 |
if (key->type == Key::MULTIPLE) |
|
2477 |
{
|
|
2478 |
/* not a critical problem */
|
|
2479 |
char warn_buff[MYSQL_ERRMSG_SIZE]; |
|
2480 |
my_snprintf(warn_buff, sizeof(warn_buff), ER(ER_TOO_LONG_KEY), |
|
2481 |
length); |
|
2482 |
push_warning(thd, MYSQL_ERROR::WARN_LEVEL_WARN, |
|
2483 |
ER_TOO_LONG_KEY, warn_buff); |
|
2484 |
/* Align key length to multibyte char boundary */
|
|
2485 |
length-= length % sql_field->charset->mbmaxlen; |
|
2486 |
}
|
|
2487 |
else
|
|
2488 |
{
|
|
2489 |
my_error(ER_TOO_LONG_KEY,MYF(0),length); |
|
2490 |
DBUG_RETURN(TRUE); |
|
2491 |
}
|
|
2492 |
}
|
|
2493 |
}
|
|
2494 |
else if ((column->length > length || |
|
2495 |
!Field::type_can_have_key_part (sql_field->sql_type) || |
|
2496 |
((f_is_packed(sql_field->pack_flag) || |
|
2497 |
((file->ha_table_flags() & HA_NO_PREFIX_CHAR_KEYS) && |
|
2498 |
(key_info->flags & HA_NOSAME))) && |
|
2499 |
column->length != length))) |
|
2500 |
{
|
|
2501 |
my_message(ER_WRONG_SUB_KEY, ER(ER_WRONG_SUB_KEY), MYF(0)); |
|
2502 |
DBUG_RETURN(TRUE); |
|
2503 |
}
|
|
2504 |
else if (!(file->ha_table_flags() & HA_NO_PREFIX_CHAR_KEYS)) |
|
2505 |
length=column->length; |
|
2506 |
}
|
|
2507 |
else if (length == 0) |
|
2508 |
{
|
|
2509 |
my_error(ER_WRONG_KEY_COLUMN, MYF(0), column->field_name.str); |
|
2510 |
DBUG_RETURN(TRUE); |
|
2511 |
}
|
|
2512 |
if (length > file->max_key_part_length()) |
|
2513 |
{
|
|
2514 |
length= file->max_key_part_length(); |
|
2515 |
if (key->type == Key::MULTIPLE) |
|
2516 |
{
|
|
2517 |
/* not a critical problem */
|
|
2518 |
char warn_buff[MYSQL_ERRMSG_SIZE]; |
|
2519 |
my_snprintf(warn_buff, sizeof(warn_buff), ER(ER_TOO_LONG_KEY), |
|
2520 |
length); |
|
2521 |
push_warning(thd, MYSQL_ERROR::WARN_LEVEL_WARN, |
|
2522 |
ER_TOO_LONG_KEY, warn_buff); |
|
2523 |
/* Align key length to multibyte char boundary */
|
|
2524 |
length-= length % sql_field->charset->mbmaxlen; |
|
2525 |
}
|
|
2526 |
else
|
|
2527 |
{
|
|
2528 |
my_error(ER_TOO_LONG_KEY,MYF(0),length); |
|
2529 |
DBUG_RETURN(TRUE); |
|
2530 |
}
|
|
2531 |
}
|
|
2532 |
key_part_info->length=(uint16) length; |
|
2533 |
/* Use packed keys for long strings on the first column */
|
|
2534 |
if (!((*db_options) & HA_OPTION_NO_PACK_KEYS) && |
|
2535 |
(length >= KEY_DEFAULT_PACK_LENGTH && |
|
2536 |
(sql_field->sql_type == MYSQL_TYPE_STRING || |
|
2537 |
sql_field->sql_type == MYSQL_TYPE_VARCHAR || |
|
2538 |
sql_field->pack_flag & FIELDFLAG_BLOB))) |
|
2539 |
{
|
|
2540 |
if ((column_nr == 0 && (sql_field->pack_flag & FIELDFLAG_BLOB)) || |
|
2541 |
sql_field->sql_type == MYSQL_TYPE_VARCHAR) |
|
2542 |
key_info->flags|= HA_BINARY_PACK_KEY | HA_VAR_LENGTH_KEY; |
|
2543 |
else
|
|
2544 |
key_info->flags|= HA_PACK_KEY; |
|
2545 |
}
|
|
2546 |
/* Check if the key segment is partial, set the key flag accordingly */
|
|
2547 |
if (length != sql_field->key_length) |
|
2548 |
key_info->flags|= HA_KEY_HAS_PART_KEY_SEG; |
|
2549 |
||
2550 |
key_length+=length; |
|
2551 |
key_part_info++; |
|
2552 |
||
2553 |
/* Create the key name based on the first column (if not given) */
|
|
2554 |
if (column_nr == 0) |
|
2555 |
{
|
|
2556 |
if (key->type == Key::PRIMARY) |
|
2557 |
{
|
|
2558 |
if (primary_key) |
|
2559 |
{
|
|
2560 |
my_message(ER_MULTIPLE_PRI_KEY, ER(ER_MULTIPLE_PRI_KEY), |
|
2561 |
MYF(0)); |
|
2562 |
DBUG_RETURN(TRUE); |
|
2563 |
}
|
|
2564 |
key_name=primary_key_name; |
|
2565 |
primary_key=1; |
|
2566 |
}
|
|
2567 |
else if (!(key_name= key->name.str)) |
|
2568 |
key_name=make_unique_key_name(sql_field->field_name, |
|
2569 |
*key_info_buffer, key_info); |
|
2570 |
if (check_if_keyname_exists(key_name, *key_info_buffer, key_info)) |
|
2571 |
{
|
|
2572 |
my_error(ER_DUP_KEYNAME, MYF(0), key_name); |
|
2573 |
DBUG_RETURN(TRUE); |
|
2574 |
}
|
|
2575 |
key_info->name=(char*) key_name; |
|
2576 |
}
|
|
2577 |
}
|
|
2578 |
if (!key_info->name || check_column_name(key_info->name)) |
|
2579 |
{
|
|
2580 |
my_error(ER_WRONG_NAME_FOR_INDEX, MYF(0), key_info->name); |
|
2581 |
DBUG_RETURN(TRUE); |
|
2582 |
}
|
|
2583 |
if (!(key_info->flags & HA_NULL_PART_KEY)) |
|
2584 |
unique_key=1; |
|
2585 |
key_info->key_length=(uint16) key_length; |
|
2586 |
if (key_length > max_key_length) |
|
2587 |
{
|
|
2588 |
my_error(ER_TOO_LONG_KEY,MYF(0),max_key_length); |
|
2589 |
DBUG_RETURN(TRUE); |
|
2590 |
}
|
|
2591 |
key_info++; |
|
2592 |
}
|
|
2593 |
if (!unique_key && !primary_key && |
|
2594 |
(file->ha_table_flags() & HA_REQUIRE_PRIMARY_KEY)) |
|
2595 |
{
|
|
2596 |
my_message(ER_REQUIRES_PRIMARY_KEY, ER(ER_REQUIRES_PRIMARY_KEY), MYF(0)); |
|
2597 |
DBUG_RETURN(TRUE); |
|
2598 |
}
|
|
2599 |
if (auto_increment > 0) |
|
2600 |
{
|
|
2601 |
my_message(ER_WRONG_AUTO_KEY, ER(ER_WRONG_AUTO_KEY), MYF(0)); |
|
2602 |
DBUG_RETURN(TRUE); |
|
2603 |
}
|
|
2604 |
/* Sort keys in optimized order */
|
|
2605 |
my_qsort((uchar*) *key_info_buffer, *key_count, sizeof(KEY), |
|
2606 |
(qsort_cmp) sort_keys); |
|
2607 |
create_info->null_bits= null_fields; |
|
2608 |
||
2609 |
/* Check fields. */
|
|
2610 |
it.rewind(); |
|
2611 |
while ((sql_field=it++)) |
|
2612 |
{
|
|
2613 |
Field::utype type= (Field::utype) MTYP_TYPENR(sql_field->unireg_check); |
|
2614 |
||
2615 |
if (thd->variables.sql_mode & MODE_NO_ZERO_DATE && |
|
2616 |
!sql_field->def && |
|
2617 |
sql_field->sql_type == MYSQL_TYPE_TIMESTAMP && |
|
2618 |
(sql_field->flags & NOT_NULL_FLAG) && |
|
2619 |
(type == Field::NONE || type == Field::TIMESTAMP_UN_FIELD)) |
|
2620 |
{
|
|
2621 |
/*
|
|
2622 |
An error should be reported if:
|
|
2623 |
- NO_ZERO_DATE SQL mode is active;
|
|
2624 |
- there is no explicit DEFAULT clause (default column value);
|
|
2625 |
- this is a TIMESTAMP column;
|
|
2626 |
- the column is not NULL;
|
|
2627 |
- this is not the DEFAULT CURRENT_TIMESTAMP column.
|
|
2628 |
||
2629 |
In other words, an error should be reported if
|
|
2630 |
- NO_ZERO_DATE SQL mode is active;
|
|
2631 |
- the column definition is equivalent to
|
|
2632 |
'column_name TIMESTAMP DEFAULT 0'.
|
|
2633 |
*/
|
|
2634 |
||
2635 |
my_error(ER_INVALID_DEFAULT, MYF(0), sql_field->field_name); |
|
2636 |
DBUG_RETURN(TRUE); |
|
2637 |
}
|
|
2638 |
}
|
|
2639 |
||
2640 |
DBUG_RETURN(FALSE); |
|
2641 |
}
|
|
2642 |
||
2643 |
||
2644 |
/*
|
|
2645 |
Set table default charset, if not set
|
|
2646 |
||
2647 |
SYNOPSIS
|
|
2648 |
set_table_default_charset()
|
|
2649 |
create_info Table create information
|
|
2650 |
||
2651 |
DESCRIPTION
|
|
2652 |
If the table character set was not given explicitely,
|
|
2653 |
let's fetch the database default character set and
|
|
2654 |
apply it to the table.
|
|
2655 |
*/
|
|
2656 |
||
2657 |
static void set_table_default_charset(THD *thd, |
|
2658 |
HA_CREATE_INFO *create_info, char *db) |
|
2659 |
{
|
|
2660 |
/*
|
|
2661 |
If the table character set was not given explicitly,
|
|
2662 |
let's fetch the database default character set and
|
|
2663 |
apply it to the table.
|
|
2664 |
*/
|
|
2665 |
if (!create_info->default_table_charset) |
|
2666 |
{
|
|
2667 |
HA_CREATE_INFO db_info; |
|
2668 |
||
2669 |
load_db_opt_by_name(thd, db, &db_info); |
|
2670 |
||
2671 |
create_info->default_table_charset= db_info.default_table_charset; |
|
2672 |
}
|
|
2673 |
}
|
|
2674 |
||
2675 |
||
2676 |
/*
|
|
2677 |
Extend long VARCHAR fields to blob & prepare field if it's a blob
|
|
2678 |
||
2679 |
SYNOPSIS
|
|
2680 |
prepare_blob_field()
|
|
2681 |
sql_field Field to check
|
|
2682 |
||
2683 |
RETURN
|
|
2684 |
0 ok
|
|
2685 |
1 Error (sql_field can't be converted to blob)
|
|
2686 |
In this case the error is given
|
|
2687 |
*/
|
|
2688 |
||
2689 |
static bool prepare_blob_field(THD *thd, Create_field *sql_field) |
|
2690 |
{
|
|
2691 |
DBUG_ENTER("prepare_blob_field"); |
|
2692 |
||
2693 |
if (sql_field->length > MAX_FIELD_VARCHARLENGTH && |
|
2694 |
!(sql_field->flags & BLOB_FLAG)) |
|
2695 |
{
|
|
2696 |
my_error(ER_TOO_BIG_FIELDLENGTH, MYF(0), sql_field->field_name, |
|
2697 |
MAX_FIELD_VARCHARLENGTH / sql_field->charset->mbmaxlen); |
|
2698 |
DBUG_RETURN(1); |
|
2699 |
}
|
|
2700 |
||
2701 |
if ((sql_field->flags & BLOB_FLAG) && sql_field->length) |
|
2702 |
{
|
|
2703 |
if (sql_field->sql_type == MYSQL_TYPE_BLOB) |
|
2704 |
{
|
|
2705 |
/* The user has given a length to the blob column */
|
|
2706 |
sql_field->sql_type= get_blob_type_from_length(sql_field->length); |
|
2707 |
sql_field->pack_length= calc_pack_length(sql_field->sql_type, 0); |
|
2708 |
}
|
|
2709 |
sql_field->length= 0; |
|
2710 |
}
|
|
2711 |
DBUG_RETURN(0); |
|
2712 |
}
|
|
2713 |
||
2714 |
||
2715 |
/*
|
|
2716 |
Preparation of Create_field for SP function return values.
|
|
2717 |
Based on code used in the inner loop of mysql_prepare_create_table()
|
|
2718 |
above.
|
|
2719 |
||
2720 |
SYNOPSIS
|
|
2721 |
sp_prepare_create_field()
|
|
2722 |
thd Thread object
|
|
2723 |
sql_field Field to prepare
|
|
2724 |
||
2725 |
DESCRIPTION
|
|
2726 |
Prepares the field structures for field creation.
|
|
2727 |
||
2728 |
*/
|
|
2729 |
||
2730 |
void sp_prepare_create_field(THD *thd, Create_field *sql_field) |
|
2731 |
{
|
|
2732 |
if (sql_field->sql_type == MYSQL_TYPE_SET || |
|
2733 |
sql_field->sql_type == MYSQL_TYPE_ENUM) |
|
2734 |
{
|
|
2735 |
uint32 field_length, dummy; |
|
2736 |
if (sql_field->sql_type == MYSQL_TYPE_SET) |
|
2737 |
{
|
|
2738 |
calculate_interval_lengths(sql_field->charset, |
|
2739 |
sql_field->interval, &dummy, |
|
2740 |
&field_length); |
|
2741 |
sql_field->length= field_length + |
|
2742 |
(sql_field->interval->count - 1); |
|
2743 |
}
|
|
2744 |
else /* MYSQL_TYPE_ENUM */ |
|
2745 |
{
|
|
2746 |
calculate_interval_lengths(sql_field->charset, |
|
2747 |
sql_field->interval, |
|
2748 |
&field_length, &dummy); |
|
2749 |
sql_field->length= field_length; |
|
2750 |
}
|
|
2751 |
set_if_smaller(sql_field->length, MAX_FIELD_WIDTH-1); |
|
2752 |
}
|
|
2753 |
||
2754 |
if (sql_field->sql_type == MYSQL_TYPE_BIT) |
|
2755 |
{
|
|
2756 |
sql_field->pack_flag= FIELDFLAG_NUMBER | |
|
2757 |
FIELDFLAG_TREAT_BIT_AS_CHAR; |
|
2758 |
}
|
|
2759 |
sql_field->create_length_to_internal_length(); |
|
2760 |
DBUG_ASSERT(sql_field->def == 0); |
|
2761 |
/* Can't go wrong as sql_field->def is not defined */
|
|
2762 |
(void) prepare_blob_field(thd, sql_field); |
|
2763 |
}
|
|
2764 |
||
2765 |
||
2766 |
/*
|
|
2767 |
Create a table
|
|
2768 |
||
2769 |
SYNOPSIS
|
|
2770 |
mysql_create_table_no_lock()
|
|
2771 |
thd Thread object
|
|
2772 |
db Database
|
|
2773 |
table_name Table name
|
|
2774 |
create_info Create information (like MAX_ROWS)
|
|
2775 |
fields List of fields to create
|
|
2776 |
keys List of keys to create
|
|
2777 |
internal_tmp_table Set to 1 if this is an internal temporary table
|
|
2778 |
(From ALTER TABLE)
|
|
2779 |
select_field_count
|
|
2780 |
||
2781 |
DESCRIPTION
|
|
2782 |
If one creates a temporary table, this is automatically opened
|
|
2783 |
||
2784 |
Note that this function assumes that caller already have taken
|
|
2785 |
name-lock on table being created or used some other way to ensure
|
|
2786 |
that concurrent operations won't intervene. mysql_create_table()
|
|
2787 |
is a wrapper that can be used for this.
|
|
2788 |
||
2789 |
no_log is needed for the case of CREATE ... SELECT,
|
|
2790 |
as the logging will be done later in sql_insert.cc
|
|
2791 |
select_field_count is also used for CREATE ... SELECT,
|
|
2792 |
and must be zero for standard create of table.
|
|
2793 |
||
2794 |
RETURN VALUES
|
|
2795 |
FALSE OK
|
|
2796 |
TRUE error
|
|
2797 |
*/
|
|
2798 |
||
2799 |
bool mysql_create_table_no_lock(THD *thd, |
|
2800 |
const char *db, const char *table_name, |
|
2801 |
HA_CREATE_INFO *create_info, |
|
2802 |
Alter_info *alter_info, |
|
2803 |
bool internal_tmp_table, |
|
2804 |
uint select_field_count) |
|
2805 |
{
|
|
2806 |
char path[FN_REFLEN]; |
|
2807 |
uint path_length; |
|
2808 |
const char *alias; |
|
2809 |
uint db_options, key_count; |
|
2810 |
KEY *key_info_buffer; |
|
2811 |
handler *file; |
|
2812 |
bool error= TRUE; |
|
2813 |
DBUG_ENTER("mysql_create_table_no_lock"); |
|
2814 |
DBUG_PRINT("enter", ("db: '%s' table: '%s' tmp: %d", |
|
2815 |
db, table_name, internal_tmp_table)); |
|
2816 |
||
2817 |
||
2818 |
/* Check for duplicate fields and check type of table to create */
|
|
2819 |
if (!alter_info->create_list.elements) |
|
2820 |
{
|
|
2821 |
my_message(ER_TABLE_MUST_HAVE_COLUMNS, ER(ER_TABLE_MUST_HAVE_COLUMNS), |
|
2822 |
MYF(0)); |
|
2823 |
DBUG_RETURN(TRUE); |
|
2824 |
}
|
|
2825 |
if (check_engine(thd, table_name, create_info)) |
|
2826 |
DBUG_RETURN(TRUE); |
|
2827 |
db_options= create_info->table_options; |
|
2828 |
if (create_info->row_type == ROW_TYPE_DYNAMIC) |
|
2829 |
db_options|=HA_OPTION_PACK_RECORD; |
|
2830 |
alias= table_case_name(create_info, table_name); |
|
2831 |
if (!(file= get_new_handler((TABLE_SHARE*) 0, thd->mem_root, |
|
2832 |
create_info->db_type))) |
|
2833 |
{
|
|
2834 |
my_error(ER_OUTOFMEMORY, MYF(0), sizeof(handler)); |
|
2835 |
DBUG_RETURN(TRUE); |
|
2836 |
}
|
|
2837 |
||
2838 |
set_table_default_charset(thd, create_info, (char*) db); |
|
2839 |
||
2840 |
if (mysql_prepare_create_table(thd, create_info, alter_info, |
|
2841 |
internal_tmp_table, |
|
2842 |
&db_options, file, |
|
2843 |
&key_info_buffer, &key_count, |
|
2844 |
select_field_count)) |
|
2845 |
goto err; |
|
2846 |
||
2847 |
/* Check if table exists */
|
|
2848 |
if (create_info->options & HA_LEX_CREATE_TMP_TABLE) |
|
2849 |
{
|
|
2850 |
path_length= build_tmptable_filename(thd, path, sizeof(path)); |
|
2851 |
create_info->table_options|=HA_CREATE_DELAY_KEY_WRITE; |
|
2852 |
}
|
|
2853 |
else
|
|
2854 |
{
|
|
2855 |
#ifdef FN_DEVCHAR
|
|
2856 |
/* check if the table name contains FN_DEVCHAR when defined */
|
|
2857 |
if (strchr(alias, FN_DEVCHAR)) |
|
2858 |
{
|
|
2859 |
my_error(ER_WRONG_TABLE_NAME, MYF(0), alias); |
|
2860 |
DBUG_RETURN(TRUE); |
|
2861 |
}
|
|
2862 |
#endif
|
|
2863 |
path_length= build_table_filename(path, sizeof(path), db, alias, reg_ext, |
|
2864 |
internal_tmp_table ? FN_IS_TMP : 0); |
|
2865 |
}
|
|
2866 |
||
2867 |
/* Check if table already exists */
|
|
2868 |
if ((create_info->options & HA_LEX_CREATE_TMP_TABLE) && |
|
2869 |
find_temporary_table(thd, db, table_name)) |
|
2870 |
{
|
|
2871 |
if (create_info->options & HA_LEX_CREATE_IF_NOT_EXISTS) |
|
2872 |
{
|
|
2873 |
create_info->table_existed= 1; // Mark that table existed |
|
2874 |
push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_NOTE, |
|
2875 |
ER_TABLE_EXISTS_ERROR, ER(ER_TABLE_EXISTS_ERROR), |
|
2876 |
alias); |
|
2877 |
error= 0; |
|
2878 |
goto err; |
|
2879 |
}
|
|
2880 |
my_error(ER_TABLE_EXISTS_ERROR, MYF(0), alias); |
|
2881 |
goto err; |
|
2882 |
}
|
|
2883 |
||
2884 |
VOID(pthread_mutex_lock(&LOCK_open)); |
|
2885 |
if (!internal_tmp_table && !(create_info->options & HA_LEX_CREATE_TMP_TABLE)) |
|
2886 |
{
|
|
2887 |
if (!access(path,F_OK)) |
|
2888 |
{
|
|
2889 |
if (create_info->options & HA_LEX_CREATE_IF_NOT_EXISTS) |
|
2890 |
goto warn; |
|
2891 |
my_error(ER_TABLE_EXISTS_ERROR,MYF(0),table_name); |
|
2892 |
goto unlock_and_end; |
|
2893 |
}
|
|
2894 |
/*
|
|
2895 |
We don't assert here, but check the result, because the table could be
|
|
2896 |
in the table definition cache and in the same time the .frm could be
|
|
2897 |
missing from the disk, in case of manual intervention which deletes
|
|
2898 |
the .frm file. The user has to use FLUSH TABLES; to clear the cache.
|
|
2899 |
Then she could create the table. This case is pretty obscure and
|
|
2900 |
therefore we don't introduce a new error message only for it.
|
|
2901 |
*/
|
|
2902 |
if (get_cached_table_share(db, alias)) |
|
2903 |
{
|
|
2904 |
my_error(ER_TABLE_EXISTS_ERROR, MYF(0), table_name); |
|
2905 |
goto unlock_and_end; |
|
2906 |
}
|
|
2907 |
}
|
|
2908 |
||
2909 |
/*
|
|
2910 |
Check that table with given name does not already
|
|
2911 |
exist in any storage engine. In such a case it should
|
|
2912 |
be discovered and the error ER_TABLE_EXISTS_ERROR be returned
|
|
2913 |
unless user specified CREATE TABLE IF EXISTS
|
|
2914 |
The LOCK_open mutex has been locked to make sure no
|
|
2915 |
one else is attempting to discover the table. Since
|
|
2916 |
it's not on disk as a frm file, no one could be using it!
|
|
2917 |
*/
|
|
2918 |
if (!(create_info->options & HA_LEX_CREATE_TMP_TABLE)) |
|
2919 |
{
|
|
2920 |
bool create_if_not_exists = |
|
2921 |
create_info->options & HA_LEX_CREATE_IF_NOT_EXISTS; |
|
2922 |
int retcode = ha_table_exists_in_engine(thd, db, table_name); |
|
2923 |
DBUG_PRINT("info", ("exists_in_engine: %u",retcode)); |
|
2924 |
switch (retcode) |
|
2925 |
{
|
|
2926 |
case HA_ERR_NO_SUCH_TABLE: |
|
2927 |
/* Normal case, no table exists. we can go and create it */
|
|
2928 |
break; |
|
2929 |
case HA_ERR_TABLE_EXIST: |
|
2930 |
DBUG_PRINT("info", ("Table existed in handler")); |
|
2931 |
||
2932 |
if (create_if_not_exists) |
|
2933 |
goto warn; |
|
2934 |
my_error(ER_TABLE_EXISTS_ERROR,MYF(0),table_name); |
|
2935 |
goto unlock_and_end; |
|
2936 |
break; |
|
2937 |
default: |
|
2938 |
DBUG_PRINT("info", ("error: %u from storage engine", retcode)); |
|
2939 |
my_error(retcode, MYF(0),table_name); |
|
2940 |
goto unlock_and_end; |
|
2941 |
}
|
|
2942 |
}
|
|
2943 |
||
2944 |
thd_proc_info(thd, "creating table"); |
|
2945 |
create_info->table_existed= 0; // Mark that table is created |
|
2946 |
||
2947 |
#ifdef HAVE_READLINK
|
|
2948 |
if (test_if_data_home_dir(create_info->data_file_name)) |
|
2949 |
{
|
|
2950 |
my_error(ER_WRONG_ARGUMENTS, MYF(0), "DATA DIRECTORY"); |
|
2951 |
goto unlock_and_end; |
|
2952 |
}
|
|
2953 |
if (test_if_data_home_dir(create_info->index_file_name)) |
|
2954 |
{
|
|
2955 |
my_error(ER_WRONG_ARGUMENTS, MYF(0), "INDEX DIRECTORY"); |
|
2956 |
goto unlock_and_end; |
|
2957 |
}
|
|
2958 |
||
2959 |
if (!my_use_symdir) |
|
2960 |
#endif /* HAVE_READLINK */ |
|
2961 |
{
|
|
2962 |
if (create_info->data_file_name) |
|
2963 |
push_warning(thd, MYSQL_ERROR::WARN_LEVEL_WARN, 0, |
|
2964 |
"DATA DIRECTORY option ignored"); |
|
2965 |
if (create_info->index_file_name) |
|
2966 |
push_warning(thd, MYSQL_ERROR::WARN_LEVEL_WARN, 0, |
|
2967 |
"INDEX DIRECTORY option ignored"); |
|
2968 |
create_info->data_file_name= create_info->index_file_name= 0; |
|
2969 |
}
|
|
2970 |
create_info->table_options=db_options; |
|
2971 |
||
2972 |
path[path_length - reg_ext_length]= '\0'; // Remove .frm extension |
|
2973 |
if (rea_create_table(thd, path, db, table_name, |
|
2974 |
create_info, alter_info->create_list, |
|
2975 |
key_count, key_info_buffer, file)) |
|
2976 |
goto unlock_and_end; |
|
2977 |
||
2978 |
if (create_info->options & HA_LEX_CREATE_TMP_TABLE) |
|
2979 |
{
|
|
2980 |
/* Open table and put in temporary table list */
|
|
2981 |
if (!(open_temporary_table(thd, path, db, table_name, 1, OTM_OPEN))) |
|
2982 |
{
|
|
2983 |
(void) rm_temporary_table(create_info->db_type, path, false); |
|
2984 |
goto unlock_and_end; |
|
2985 |
}
|
|
2986 |
thd->thread_specific_used= TRUE; |
|
2987 |
}
|
|
2988 |
||
2989 |
/*
|
|
2990 |
Don't write statement if:
|
|
2991 |
- It is an internal temporary table,
|
|
2992 |
- Row-based logging is used and it we are creating a temporary table, or
|
|
2993 |
- The binary log is not open.
|
|
2994 |
Otherwise, the statement shall be binlogged.
|
|
2995 |
*/
|
|
2996 |
if (!internal_tmp_table && |
|
2997 |
(!thd->current_stmt_binlog_row_based || |
|
2998 |
(thd->current_stmt_binlog_row_based && |
|
2999 |
!(create_info->options & HA_LEX_CREATE_TMP_TABLE)))) |
|
3000 |
write_bin_log(thd, TRUE, thd->query, thd->query_length); |
|
3001 |
error= FALSE; |
|
3002 |
unlock_and_end: |
|
3003 |
VOID(pthread_mutex_unlock(&LOCK_open)); |
|
3004 |
||
3005 |
err: |
|
3006 |
thd_proc_info(thd, "After create"); |
|
3007 |
delete file; |
|
3008 |
DBUG_RETURN(error); |
|
3009 |
||
3010 |
warn: |
|
3011 |
error= FALSE; |
|
3012 |
push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_NOTE, |
|
3013 |
ER_TABLE_EXISTS_ERROR, ER(ER_TABLE_EXISTS_ERROR), |
|
3014 |
alias); |
|
3015 |
create_info->table_existed= 1; // Mark that table existed |
|
3016 |
goto unlock_and_end; |
|
3017 |
}
|
|
3018 |
||
3019 |
||
3020 |
/*
|
|
3021 |
Database locking aware wrapper for mysql_create_table_no_lock(),
|
|
3022 |
*/
|
|
3023 |
||
3024 |
bool mysql_create_table(THD *thd, const char *db, const char *table_name, |
|
3025 |
HA_CREATE_INFO *create_info, |
|
3026 |
Alter_info *alter_info, |
|
3027 |
bool internal_tmp_table, |
|
3028 |
uint select_field_count) |
|
3029 |
{
|
|
3030 |
TABLE *name_lock= 0; |
|
3031 |
bool result; |
|
3032 |
DBUG_ENTER("mysql_create_table"); |
|
3033 |
||
3034 |
/* Wait for any database locks */
|
|
3035 |
pthread_mutex_lock(&LOCK_lock_db); |
|
3036 |
while (!thd->killed && |
|
3037 |
hash_search(&lock_db_cache,(uchar*) db, strlen(db))) |
|
3038 |
{
|
|
3039 |
wait_for_condition(thd, &LOCK_lock_db, &COND_refresh); |
|
3040 |
pthread_mutex_lock(&LOCK_lock_db); |
|
3041 |
}
|
|
3042 |
||
3043 |
if (thd->killed) |
|
3044 |
{
|
|
3045 |
pthread_mutex_unlock(&LOCK_lock_db); |
|
3046 |
DBUG_RETURN(TRUE); |
|
3047 |
}
|
|
3048 |
creating_table++; |
|
3049 |
pthread_mutex_unlock(&LOCK_lock_db); |
|
3050 |
||
3051 |
if (!(create_info->options & HA_LEX_CREATE_TMP_TABLE)) |
|
3052 |
{
|
|
3053 |
if (lock_table_name_if_not_cached(thd, db, table_name, &name_lock)) |
|
3054 |
{
|
|
3055 |
result= TRUE; |
|
3056 |
goto unlock; |
|
3057 |
}
|
|
3058 |
if (!name_lock) |
|
3059 |
{
|
|
3060 |
if (create_info->options & HA_LEX_CREATE_IF_NOT_EXISTS) |
|
3061 |
{
|
|
3062 |
push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_NOTE, |
|
3063 |
ER_TABLE_EXISTS_ERROR, ER(ER_TABLE_EXISTS_ERROR), |
|
3064 |
table_name); |
|
3065 |
create_info->table_existed= 1; |
|
3066 |
result= FALSE; |
|
3067 |
}
|
|
3068 |
else
|
|
3069 |
{
|
|
3070 |
my_error(ER_TABLE_EXISTS_ERROR,MYF(0),table_name); |
|
3071 |
result= TRUE; |
|
3072 |
}
|
|
3073 |
goto unlock; |
|
3074 |
}
|
|
3075 |
}
|
|
3076 |
||
3077 |
result= mysql_create_table_no_lock(thd, db, table_name, create_info, |
|
3078 |
alter_info, |
|
3079 |
internal_tmp_table, |
|
3080 |
select_field_count); |
|
3081 |
||
3082 |
unlock: |
|
3083 |
if (name_lock) |
|
3084 |
{
|
|
3085 |
pthread_mutex_lock(&LOCK_open); |
|
3086 |
unlink_open_table(thd, name_lock, FALSE); |
|
3087 |
pthread_mutex_unlock(&LOCK_open); |
|
3088 |
}
|
|
3089 |
pthread_mutex_lock(&LOCK_lock_db); |
|
3090 |
if (!--creating_table && creating_database) |
|
3091 |
pthread_cond_signal(&COND_refresh); |
|
3092 |
pthread_mutex_unlock(&LOCK_lock_db); |
|
3093 |
DBUG_RETURN(result); |
|
3094 |
}
|
|
3095 |
||
3096 |
||
3097 |
/*
|
|
3098 |
** Give the key name after the first field with an optional '_#' after
|
|
3099 |
**/
|
|
3100 |
||
3101 |
static bool |
|
3102 |
check_if_keyname_exists(const char *name, KEY *start, KEY *end) |
|
3103 |
{
|
|
3104 |
for (KEY *key=start ; key != end ; key++) |
|
3105 |
if (!my_strcasecmp(system_charset_info,name,key->name)) |
|
3106 |
return 1; |
|
3107 |
return 0; |
|
3108 |
}
|
|
3109 |
||
3110 |
||
3111 |
static char * |
|
3112 |
make_unique_key_name(const char *field_name,KEY *start,KEY *end) |
|
3113 |
{
|
|
3114 |
char buff[MAX_FIELD_NAME],*buff_end; |
|
3115 |
||
3116 |
if (!check_if_keyname_exists(field_name,start,end) && |
|
3117 |
my_strcasecmp(system_charset_info,field_name,primary_key_name)) |
|
3118 |
return (char*) field_name; // Use fieldname |
|
3119 |
buff_end=strmake(buff,field_name, sizeof(buff)-4); |
|
3120 |
||
3121 |
/*
|
|
3122 |
Only 3 chars + '\0' left, so need to limit to 2 digit
|
|
3123 |
This is ok as we can't have more than 100 keys anyway
|
|
3124 |
*/
|
|
3125 |
for (uint i=2 ; i< 100; i++) |
|
3126 |
{
|
|
3127 |
*buff_end= '_'; |
|
3128 |
int10_to_str(i, buff_end+1, 10); |
|
3129 |
if (!check_if_keyname_exists(buff,start,end)) |
|
3130 |
return sql_strdup(buff); |
|
3131 |
}
|
|
3132 |
return (char*) "not_specified"; // Should never happen |
|
3133 |
}
|
|
3134 |
||
3135 |
||
3136 |
/****************************************************************************
|
|
3137 |
** Alter a table definition
|
|
3138 |
****************************************************************************/
|
|
3139 |
||
3140 |
||
3141 |
/*
|
|
3142 |
Rename a table.
|
|
3143 |
||
3144 |
SYNOPSIS
|
|
3145 |
mysql_rename_table()
|
|
3146 |
base The handlerton handle.
|
|
3147 |
old_db The old database name.
|
|
3148 |
old_name The old table name.
|
|
3149 |
new_db The new database name.
|
|
3150 |
new_name The new table name.
|
|
3151 |
flags flags for build_table_filename().
|
|
3152 |
FN_FROM_IS_TMP old_name is temporary.
|
|
3153 |
FN_TO_IS_TMP new_name is temporary.
|
|
3154 |
NO_FRM_RENAME Don't rename the FRM file
|
|
3155 |
but only the table in the storage engine.
|
|
3156 |
||
3157 |
RETURN
|
|
3158 |
FALSE OK
|
|
3159 |
TRUE Error
|
|
3160 |
*/
|
|
3161 |
||
3162 |
bool
|
|
3163 |
mysql_rename_table(handlerton *base, const char *old_db, |
|
3164 |
const char *old_name, const char *new_db, |
|
3165 |
const char *new_name, uint flags) |
|
3166 |
{
|
|
3167 |
THD *thd= current_thd; |
|
3168 |
char from[FN_REFLEN], to[FN_REFLEN], lc_from[FN_REFLEN], lc_to[FN_REFLEN]; |
|
3169 |
char *from_base= from, *to_base= to; |
|
3170 |
char tmp_name[NAME_LEN+1]; |
|
3171 |
handler *file; |
|
3172 |
int error=0; |
|
3173 |
DBUG_ENTER("mysql_rename_table"); |
|
3174 |
DBUG_PRINT("enter", ("old: '%s'.'%s' new: '%s'.'%s'", |
|
3175 |
old_db, old_name, new_db, new_name)); |
|
3176 |
||
3177 |
file= (base == NULL ? 0 : |
|
3178 |
get_new_handler((TABLE_SHARE*) 0, thd->mem_root, base)); |
|
3179 |
||
3180 |
build_table_filename(from, sizeof(from), old_db, old_name, "", |
|
3181 |
flags & FN_FROM_IS_TMP); |
|
3182 |
build_table_filename(to, sizeof(to), new_db, new_name, "", |
|
3183 |
flags & FN_TO_IS_TMP); |
|
3184 |
||
3185 |
/*
|
|
3186 |
If lower_case_table_names == 2 (case-preserving but case-insensitive
|
|
3187 |
file system) and the storage is not HA_FILE_BASED, we need to provide
|
|
3188 |
a lowercase file name, but we leave the .frm in mixed case.
|
|
3189 |
*/
|
|
3190 |
if (lower_case_table_names == 2 && file && |
|
3191 |
!(file->ha_table_flags() & HA_FILE_BASED)) |
|
3192 |
{
|
|
3193 |
strmov(tmp_name, old_name); |
|
3194 |
my_casedn_str(files_charset_info, tmp_name); |
|
3195 |
build_table_filename(lc_from, sizeof(lc_from), old_db, tmp_name, "", |
|
3196 |
flags & FN_FROM_IS_TMP); |
|
3197 |
from_base= lc_from; |
|
3198 |
||
3199 |
strmov(tmp_name, new_name); |
|
3200 |
my_casedn_str(files_charset_info, tmp_name); |
|
3201 |
build_table_filename(lc_to, sizeof(lc_to), new_db, tmp_name, "", |
|
3202 |
flags & FN_TO_IS_TMP); |
|
3203 |
to_base= lc_to; |
|
3204 |
}
|
|
3205 |
if (!file || !(error=file->ha_rename_table(from_base, to_base))) |
|
3206 |
{
|
|
3207 |
if (!(flags & NO_FRM_RENAME) && rename_file_ext(from,to,reg_ext)) |
|
3208 |
{
|
|
3209 |
error=my_errno; |
|
3210 |
/* Restore old file name */
|
|
3211 |
if (file) |
|
3212 |
file->ha_rename_table(to_base, from_base); |
|
3213 |
}
|
|
3214 |
}
|
|
3215 |
delete file; |
|
3216 |
if (error == HA_ERR_WRONG_COMMAND) |
|
3217 |
my_error(ER_NOT_SUPPORTED_YET, MYF(0), "ALTER TABLE"); |
|
3218 |
else if (error) |
|
3219 |
my_error(ER_ERROR_ON_RENAME, MYF(0), from, to, error); |
|
3220 |
DBUG_RETURN(error != 0); |
|
3221 |
}
|
|
3222 |
||
3223 |
||
3224 |
/*
|
|
3225 |
Force all other threads to stop using the table
|
|
3226 |
||
3227 |
SYNOPSIS
|
|
3228 |
wait_while_table_is_used()
|
|
3229 |
thd Thread handler
|
|
3230 |
table Table to remove from cache
|
|
3231 |
function HA_EXTRA_PREPARE_FOR_DROP if table is to be deleted
|
|
3232 |
HA_EXTRA_FORCE_REOPEN if table is not be used
|
|
3233 |
HA_EXTRA_PREPARE_FOR_RENAME if table is to be renamed
|
|
3234 |
NOTES
|
|
3235 |
When returning, the table will be unusable for other threads until
|
|
3236 |
the table is closed.
|
|
3237 |
||
3238 |
PREREQUISITES
|
|
3239 |
Lock on LOCK_open
|
|
3240 |
Win32 clients must also have a WRITE LOCK on the table !
|
|
3241 |
*/
|
|
3242 |
||
3243 |
void wait_while_table_is_used(THD *thd, TABLE *table, |
|
3244 |
enum ha_extra_function function) |
|
3245 |
{
|
|
3246 |
DBUG_ENTER("wait_while_table_is_used"); |
|
3247 |
DBUG_PRINT("enter", ("table: '%s' share: 0x%lx db_stat: %u version: %lu", |
|
3248 |
table->s->table_name.str, (ulong) table->s, |
|
3249 |
table->db_stat, table->s->version)); |
|
3250 |
||
3251 |
safe_mutex_assert_owner(&LOCK_open); |
|
3252 |
||
3253 |
VOID(table->file->extra(function)); |
|
3254 |
/* Mark all tables that are in use as 'old' */
|
|
3255 |
mysql_lock_abort(thd, table, TRUE); /* end threads waiting on lock */ |
|
3256 |
||
3257 |
/* Wait until all there are no other threads that has this table open */
|
|
3258 |
remove_table_from_cache(thd, table->s->db.str, |
|
3259 |
table->s->table_name.str, |
|
3260 |
RTFC_WAIT_OTHER_THREAD_FLAG); |
|
3261 |
DBUG_VOID_RETURN; |
|
3262 |
}
|
|
3263 |
||
3264 |
/*
|
|
3265 |
Close a cached table
|
|
3266 |
||
3267 |
SYNOPSIS
|
|
3268 |
close_cached_table()
|
|
3269 |
thd Thread handler
|
|
3270 |
table Table to remove from cache
|
|
3271 |
||
3272 |
NOTES
|
|
3273 |
Function ends by signaling threads waiting for the table to try to
|
|
3274 |
reopen the table.
|
|
3275 |
||
3276 |
PREREQUISITES
|
|
3277 |
Lock on LOCK_open
|
|
3278 |
Win32 clients must also have a WRITE LOCK on the table !
|
|
3279 |
*/
|
|
3280 |
||
3281 |
void close_cached_table(THD *thd, TABLE *table) |
|
3282 |
{
|
|
3283 |
DBUG_ENTER("close_cached_table"); |
|
3284 |
||
3285 |
wait_while_table_is_used(thd, table, HA_EXTRA_FORCE_REOPEN); |
|
3286 |
/* Close lock if this is not got with LOCK TABLES */
|
|
3287 |
if (thd->lock) |
|
3288 |
{
|
|
3289 |
mysql_unlock_tables(thd, thd->lock); |
|
3290 |
thd->lock=0; // Start locked threads |
|
3291 |
}
|
|
3292 |
/* Close all copies of 'table'. This also frees all LOCK TABLES lock */
|
|
3293 |
unlink_open_table(thd, table, TRUE); |
|
3294 |
||
3295 |
/* When lock on LOCK_open is freed other threads can continue */
|
|
3296 |
broadcast_refresh(); |
|
3297 |
DBUG_VOID_RETURN; |
|
3298 |
}
|
|
3299 |
||
3300 |
static int send_check_errmsg(THD *thd, TABLE_LIST* table, |
|
3301 |
const char* operator_name, const char* errmsg) |
|
3302 |
||
3303 |
{
|
|
3304 |
Protocol *protocol= thd->protocol; |
|
3305 |
protocol->prepare_for_resend(); |
|
3306 |
protocol->store(table->alias, system_charset_info); |
|
3307 |
protocol->store((char*) operator_name, system_charset_info); |
|
3308 |
protocol->store(STRING_WITH_LEN("error"), system_charset_info); |
|
3309 |
protocol->store(errmsg, system_charset_info); |
|
3310 |
thd->clear_error(); |
|
3311 |
if (protocol->write()) |
|
3312 |
return -1; |
|
3313 |
return 1; |
|
3314 |
}
|
|
3315 |
||
3316 |
||
3317 |
static int prepare_for_repair(THD *thd, TABLE_LIST *table_list, |
|
3318 |
HA_CHECK_OPT *check_opt) |
|
3319 |
{
|
|
3320 |
int error= 0; |
|
3321 |
TABLE tmp_table, *table; |
|
3322 |
TABLE_SHARE *share; |
|
3323 |
char from[FN_REFLEN],tmp[FN_REFLEN+32]; |
|
3324 |
const char **ext; |
|
3325 |
MY_STAT stat_info; |
|
3326 |
DBUG_ENTER("prepare_for_repair"); |
|
3327 |
||
3328 |
if (!(check_opt->sql_flags & TT_USEFRM)) |
|
3329 |
DBUG_RETURN(0); |
|
3330 |
||
3331 |
if (!(table= table_list->table)) /* if open_ltable failed */ |
|
3332 |
{
|
|
3333 |
char key[MAX_DBKEY_LENGTH]; |
|
3334 |
uint key_length; |
|
3335 |
||
3336 |
key_length= create_table_def_key(thd, key, table_list, 0); |
|
3337 |
pthread_mutex_lock(&LOCK_open); |
|
3338 |
if (!(share= (get_table_share(thd, table_list, key, key_length, 0, |
|
3339 |
&error)))) |
|
3340 |
{
|
|
3341 |
pthread_mutex_unlock(&LOCK_open); |
|
3342 |
DBUG_RETURN(0); // Can't open frm file |
|
3343 |
}
|
|
3344 |
||
3345 |
if (open_table_from_share(thd, share, "", 0, 0, 0, &tmp_table, OTM_OPEN)) |
|
3346 |
{
|
|
3347 |
release_table_share(share, RELEASE_NORMAL); |
|
3348 |
pthread_mutex_unlock(&LOCK_open); |
|
3349 |
DBUG_RETURN(0); // Out of memory |
|
3350 |
}
|
|
3351 |
table= &tmp_table; |
|
3352 |
pthread_mutex_unlock(&LOCK_open); |
|
3353 |
}
|
|
3354 |
||
3355 |
/*
|
|
3356 |
REPAIR TABLE ... USE_FRM for temporary tables makes little sense.
|
|
3357 |
*/
|
|
3358 |
if (table->s->tmp_table) |
|
3359 |
{
|
|
3360 |
error= send_check_errmsg(thd, table_list, "repair", |
|
3361 |
"Cannot repair temporary table from .frm file"); |
|
3362 |
goto end; |
|
3363 |
}
|
|
3364 |
||
3365 |
/*
|
|
3366 |
User gave us USE_FRM which means that the header in the index file is
|
|
3367 |
trashed.
|
|
3368 |
In this case we will try to fix the table the following way:
|
|
3369 |
- Rename the data file to a temporary name
|
|
3370 |
- Truncate the table
|
|
3371 |
- Replace the new data file with the old one
|
|
3372 |
- Run a normal repair using the new index file and the old data file
|
|
3373 |
*/
|
|
3374 |
||
3375 |
/*
|
|
3376 |
Check if this is a table type that stores index and data separately,
|
|
3377 |
like ISAM or MyISAM. We assume fixed order of engine file name
|
|
3378 |
extentions array. First element of engine file name extentions array
|
|
3379 |
is meta/index file extention. Second element - data file extention.
|
|
3380 |
*/
|
|
3381 |
ext= table->file->bas_ext(); |
|
3382 |
if (!ext[0] || !ext[1]) |
|
3383 |
goto end; // No data file |
|
3384 |
||
3385 |
// Name of data file
|
|
3386 |
strxmov(from, table->s->normalized_path.str, ext[1], NullS); |
|
3387 |
if (!my_stat(from, &stat_info, MYF(0))) |
|
3388 |
goto end; // Can't use USE_FRM flag |
|
3389 |
||
3390 |
my_snprintf(tmp, sizeof(tmp), "%s-%lx_%lx", |
|
3391 |
from, current_pid, thd->thread_id); |
|
3392 |
||
3393 |
/* If we could open the table, close it */
|
|
3394 |
if (table_list->table) |
|
3395 |
{
|
|
3396 |
pthread_mutex_lock(&LOCK_open); |
|
3397 |
close_cached_table(thd, table); |
|
3398 |
pthread_mutex_unlock(&LOCK_open); |
|
3399 |
}
|
|
3400 |
if (lock_and_wait_for_table_name(thd,table_list)) |
|
3401 |
{
|
|
3402 |
error= -1; |
|
3403 |
goto end; |
|
3404 |
}
|
|
3405 |
if (my_rename(from, tmp, MYF(MY_WME))) |
|
3406 |
{
|
|
3407 |
pthread_mutex_lock(&LOCK_open); |
|
3408 |
unlock_table_name(thd, table_list); |
|
3409 |
pthread_mutex_unlock(&LOCK_open); |
|
3410 |
error= send_check_errmsg(thd, table_list, "repair", |
|
3411 |
"Failed renaming data file"); |
|
3412 |
goto end; |
|
3413 |
}
|
|
3414 |
if (mysql_truncate(thd, table_list, 1)) |
|
3415 |
{
|
|
3416 |
pthread_mutex_lock(&LOCK_open); |
|
3417 |
unlock_table_name(thd, table_list); |
|
3418 |
pthread_mutex_unlock(&LOCK_open); |
|
3419 |
error= send_check_errmsg(thd, table_list, "repair", |
|
3420 |
"Failed generating table from .frm file"); |
|
3421 |
goto end; |
|
3422 |
}
|
|
3423 |
if (my_rename(tmp, from, MYF(MY_WME))) |
|
3424 |
{
|
|
3425 |
pthread_mutex_lock(&LOCK_open); |
|
3426 |
unlock_table_name(thd, table_list); |
|
3427 |
pthread_mutex_unlock(&LOCK_open); |
|
3428 |
error= send_check_errmsg(thd, table_list, "repair", |
|
3429 |
"Failed restoring .MYD file"); |
|
3430 |
goto end; |
|
3431 |
}
|
|
3432 |
||
3433 |
/*
|
|
3434 |
Now we should be able to open the partially repaired table
|
|
3435 |
to finish the repair in the handler later on.
|
|
3436 |
*/
|
|
3437 |
pthread_mutex_lock(&LOCK_open); |
|
3438 |
if (reopen_name_locked_table(thd, table_list, TRUE)) |
|
3439 |
{
|
|
3440 |
unlock_table_name(thd, table_list); |
|
3441 |
pthread_mutex_unlock(&LOCK_open); |
|
3442 |
error= send_check_errmsg(thd, table_list, "repair", |
|
3443 |
"Failed to open partially repaired table"); |
|
3444 |
goto end; |
|
3445 |
}
|
|
3446 |
pthread_mutex_unlock(&LOCK_open); |
|
3447 |
||
3448 |
end: |
|
3449 |
if (table == &tmp_table) |
|
3450 |
{
|
|
3451 |
pthread_mutex_lock(&LOCK_open); |
|
3452 |
closefrm(table, 1); // Free allocated memory |
|
3453 |
pthread_mutex_unlock(&LOCK_open); |
|
3454 |
}
|
|
3455 |
DBUG_RETURN(error); |
|
3456 |
}
|
|
3457 |
||
3458 |
||
3459 |
||
3460 |
/*
|
|
3461 |
RETURN VALUES
|
|
3462 |
FALSE Message sent to net (admin operation went ok)
|
|
3463 |
TRUE Message should be sent by caller
|
|
3464 |
(admin operation or network communication failed)
|
|
3465 |
*/
|
|
3466 |
static bool mysql_admin_table(THD* thd, TABLE_LIST* tables, |
|
3467 |
HA_CHECK_OPT* check_opt, |
|
3468 |
const char *operator_name, |
|
3469 |
thr_lock_type lock_type, |
|
3470 |
bool open_for_modify, |
|
3471 |
bool no_warnings_for_error, |
|
3472 |
uint extra_open_options, |
|
3473 |
int (*prepare_func)(THD *, TABLE_LIST *, |
|
3474 |
HA_CHECK_OPT *), |
|
3475 |
int (handler::*operator_func)(THD *, |
|
3476 |
HA_CHECK_OPT *)) |
|
3477 |
{
|
|
3478 |
TABLE_LIST *table; |
|
3479 |
SELECT_LEX *select= &thd->lex->select_lex; |
|
3480 |
List<Item> field_list; |
|
3481 |
Item *item; |
|
3482 |
Protocol *protocol= thd->protocol; |
|
3483 |
LEX *lex= thd->lex; |
|
3484 |
int result_code= 0; |
|
3485 |
CHARSET_INFO *cs= system_charset_info; |
|
3486 |
DBUG_ENTER("mysql_admin_table"); |
|
3487 |
||
3488 |
if (end_active_trans(thd)) |
|
3489 |
DBUG_RETURN(1); |
|
3490 |
field_list.push_back(item = new Item_empty_string("Table", |
|
3491 |
NAME_CHAR_LEN * 2, |
|
3492 |
cs)); |
|
3493 |
item->maybe_null = 1; |
|
3494 |
field_list.push_back(item = new Item_empty_string("Op", 10, cs)); |
|
3495 |
item->maybe_null = 1; |
|
3496 |
field_list.push_back(item = new Item_empty_string("Msg_type", 10, cs)); |
|
3497 |
item->maybe_null = 1; |
|
3498 |
field_list.push_back(item = new Item_empty_string("Msg_text", 255, cs)); |
|
3499 |
item->maybe_null = 1; |
|
3500 |
if (protocol->send_fields(&field_list, |
|
3501 |
Protocol::SEND_NUM_ROWS | Protocol::SEND_EOF)) |
|
3502 |
DBUG_RETURN(TRUE); |
|
3503 |
||
3504 |
mysql_ha_rm_tables(thd, tables, FALSE); |
|
3505 |
||
3506 |
for (table= tables; table; table= table->next_local) |
|
3507 |
{
|
|
3508 |
char table_name[NAME_LEN*2+2]; |
|
3509 |
char* db = table->db; |
|
3510 |
bool fatal_error=0; |
|
3511 |
||
3512 |
DBUG_PRINT("admin", ("table: '%s'.'%s'", table->db, table->table_name)); |
|
3513 |
DBUG_PRINT("admin", ("extra_open_options: %u", extra_open_options)); |
|
3514 |
strxmov(table_name, db, ".", table->table_name, NullS); |
|
3515 |
thd->open_options|= extra_open_options; |
|
3516 |
table->lock_type= lock_type; |
|
3517 |
/* open only one table from local list of command */
|
|
3518 |
{
|
|
3519 |
TABLE_LIST *save_next_global, *save_next_local; |
|
3520 |
save_next_global= table->next_global; |
|
3521 |
table->next_global= 0; |
|
3522 |
save_next_local= table->next_local; |
|
3523 |
table->next_local= 0; |
|
3524 |
select->table_list.first= (uchar*)table; |
|
3525 |
/*
|
|
3526 |
Time zone tables and SP tables can be add to lex->query_tables list,
|
|
3527 |
so it have to be prepared.
|
|
3528 |
TODO: Investigate if we can put extra tables into argument instead of
|
|
3529 |
using lex->query_tables
|
|
3530 |
*/
|
|
3531 |
lex->query_tables= table; |
|
3532 |
lex->query_tables_last= &table->next_global; |
|
3533 |
lex->query_tables_own_last= 0; |
|
3534 |
thd->no_warnings_for_error= no_warnings_for_error; |
|
3535 |
table->required_type=FRMTYPE_TABLE; |
|
3536 |
||
3537 |
open_and_lock_tables(thd, table); |
|
3538 |
thd->no_warnings_for_error= 0; |
|
3539 |
table->next_global= save_next_global; |
|
3540 |
table->next_local= save_next_local; |
|
3541 |
thd->open_options&= ~extra_open_options; |
|
3542 |
}
|
|
3543 |
DBUG_PRINT("admin", ("table: 0x%lx", (long) table->table)); |
|
3544 |
||
3545 |
if (prepare_func) |
|
3546 |
{
|
|
3547 |
DBUG_PRINT("admin", ("calling prepare_func")); |
|
3548 |
switch ((*prepare_func)(thd, table, check_opt)) { |
|
3549 |
case 1: // error, message written to net |
|
3550 |
ha_autocommit_or_rollback(thd, 1); |
|
3551 |
end_trans(thd, ROLLBACK); |
|
3552 |
close_thread_tables(thd); |
|
3553 |
DBUG_PRINT("admin", ("simple error, admin next table")); |
|
3554 |
continue; |
|
3555 |
case -1: // error, message could be written to net |
|
3556 |
/* purecov: begin inspected */
|
|
3557 |
DBUG_PRINT("admin", ("severe error, stop")); |
|
3558 |
goto err; |
|
3559 |
/* purecov: end */
|
|
3560 |
default: // should be 0 otherwise |
|
3561 |
DBUG_PRINT("admin", ("prepare_func succeeded")); |
|
3562 |
;
|
|
3563 |
}
|
|
3564 |
}
|
|
3565 |
||
3566 |
/*
|
|
3567 |
CHECK TABLE command is only command where VIEW allowed here and this
|
|
3568 |
command use only temporary teble method for VIEWs resolving => there
|
|
3569 |
can't be VIEW tree substitition of join view => if opening table
|
|
3570 |
succeed then table->table will have real TABLE pointer as value (in
|
|
3571 |
case of join view substitution table->table can be 0, but here it is
|
|
3572 |
impossible)
|
|
3573 |
*/
|
|
3574 |
if (!table->table) |
|
3575 |
{
|
|
3576 |
DBUG_PRINT("admin", ("open table failed")); |
|
3577 |
if (!thd->warn_list.elements) |
|
3578 |
push_warning(thd, MYSQL_ERROR::WARN_LEVEL_ERROR, |
|
3579 |
ER_CHECK_NO_SUCH_TABLE, ER(ER_CHECK_NO_SUCH_TABLE)); |
|
3580 |
goto send_result; |
|
3581 |
}
|
|
3582 |
||
3583 |
if ((table->table->db_stat & HA_READ_ONLY) && open_for_modify) |
|
3584 |
{
|
|
3585 |
/* purecov: begin inspected */
|
|
3586 |
char buff[FN_REFLEN + MYSQL_ERRMSG_SIZE]; |
|
3587 |
uint length; |
|
3588 |
DBUG_PRINT("admin", ("sending error message")); |
|
3589 |
protocol->prepare_for_resend(); |
|
3590 |
protocol->store(table_name, system_charset_info); |
|
3591 |
protocol->store(operator_name, system_charset_info); |
|
3592 |
protocol->store(STRING_WITH_LEN("error"), system_charset_info); |
|
3593 |
length= my_snprintf(buff, sizeof(buff), ER(ER_OPEN_AS_READONLY), |
|
3594 |
table_name); |
|
3595 |
protocol->store(buff, length, system_charset_info); |
|
3596 |
ha_autocommit_or_rollback(thd, 0); |
|
3597 |
end_trans(thd, COMMIT); |
|
3598 |
close_thread_tables(thd); |
|
3599 |
lex->reset_query_tables_list(FALSE); |
|
3600 |
table->table=0; // For query cache |
|
3601 |
if (protocol->write()) |
|
3602 |
goto err; |
|
3603 |
continue; |
|
3604 |
/* purecov: end */
|
|
3605 |
}
|
|
3606 |
||
3607 |
/* Close all instances of the table to allow repair to rename files */
|
|
3608 |
if (lock_type == TL_WRITE && table->table->s->version) |
|
3609 |
{
|
|
3610 |
DBUG_PRINT("admin", ("removing table from cache")); |
|
3611 |
pthread_mutex_lock(&LOCK_open); |
|
3612 |
const char *old_message=thd->enter_cond(&COND_refresh, &LOCK_open, |
|
3613 |
"Waiting to get writelock"); |
|
3614 |
mysql_lock_abort(thd,table->table, TRUE); |
|
3615 |
remove_table_from_cache(thd, table->table->s->db.str, |
|
3616 |
table->table->s->table_name.str, |
|
3617 |
RTFC_WAIT_OTHER_THREAD_FLAG | |
|
3618 |
RTFC_CHECK_KILLED_FLAG); |
|
3619 |
thd->exit_cond(old_message); |
|
3620 |
DBUG_EXECUTE_IF("wait_in_mysql_admin_table", wait_for_kill_signal(thd);); |
|
3621 |
if (thd->killed) |
|
3622 |
goto err; |
|
3623 |
open_for_modify= 0; |
|
3624 |
}
|
|
3625 |
||
3626 |
if (table->table->s->crashed && operator_func == &handler::ha_check) |
|
3627 |
{
|
|
3628 |
/* purecov: begin inspected */
|
|
3629 |
DBUG_PRINT("admin", ("sending crashed warning")); |
|
3630 |
protocol->prepare_for_resend(); |
|
3631 |
protocol->store(table_name, system_charset_info); |
|
3632 |
protocol->store(operator_name, system_charset_info); |
|
3633 |
protocol->store(STRING_WITH_LEN("warning"), system_charset_info); |
|
3634 |
protocol->store(STRING_WITH_LEN("Table is marked as crashed"), |
|
3635 |
system_charset_info); |
|
3636 |
if (protocol->write()) |
|
3637 |
goto err; |
|
3638 |
/* purecov: end */
|
|
3639 |
}
|
|
3640 |
||
3641 |
if (operator_func == &handler::ha_repair && |
|
3642 |
!(check_opt->sql_flags & TT_USEFRM)) |
|
3643 |
{
|
|
3644 |
if ((table->table->file->check_old_types() == HA_ADMIN_NEEDS_ALTER) || |
|
3645 |
(table->table->file->ha_check_for_upgrade(check_opt) == |
|
3646 |
HA_ADMIN_NEEDS_ALTER)) |
|
3647 |
{
|
|
3648 |
DBUG_PRINT("admin", ("recreating table")); |
|
3649 |
ha_autocommit_or_rollback(thd, 1); |
|
3650 |
close_thread_tables(thd); |
|
3651 |
tmp_disable_binlog(thd); // binlogging is done by caller if wanted |
|
3652 |
result_code= mysql_recreate_table(thd, table); |
|
3653 |
reenable_binlog(thd); |
|
3654 |
/*
|
|
3655 |
mysql_recreate_table() can push OK or ERROR.
|
|
3656 |
Clear 'OK' status. If there is an error, keep it:
|
|
3657 |
we will store the error message in a result set row
|
|
3658 |
and then clear.
|
|
3659 |
*/
|
|
3660 |
if (thd->main_da.is_ok()) |
|
3661 |
thd->main_da.reset_diagnostics_area(); |
|
3662 |
goto send_result; |
|
3663 |
}
|
|
3664 |
}
|
|
3665 |
||
3666 |
DBUG_PRINT("admin", ("calling operator_func '%s'", operator_name)); |
|
3667 |
result_code = (table->table->file->*operator_func)(thd, check_opt); |
|
3668 |
DBUG_PRINT("admin", ("operator_func returned: %d", result_code)); |
|
3669 |
||
3670 |
send_result: |
|
3671 |
||
3672 |
lex->cleanup_after_one_table_open(); |
|
3673 |
thd->clear_error(); // these errors shouldn't get client |
|
3674 |
{
|
|
3675 |
List_iterator_fast<MYSQL_ERROR> it(thd->warn_list); |
|
3676 |
MYSQL_ERROR *err; |
|
3677 |
while ((err= it++)) |
|
3678 |
{
|
|
3679 |
protocol->prepare_for_resend(); |
|
3680 |
protocol->store(table_name, system_charset_info); |
|
3681 |
protocol->store((char*) operator_name, system_charset_info); |
|
3682 |
protocol->store(warning_level_names[err->level].str, |
|
3683 |
warning_level_names[err->level].length, |
|
3684 |
system_charset_info); |
|
3685 |
protocol->store(err->msg, system_charset_info); |
|
3686 |
if (protocol->write()) |
|
3687 |
goto err; |
|
3688 |
}
|
|
3689 |
mysql_reset_errors(thd, true); |
|
3690 |
}
|
|
3691 |
protocol->prepare_for_resend(); |
|
3692 |
protocol->store(table_name, system_charset_info); |
|
3693 |
protocol->store(operator_name, system_charset_info); |
|
3694 |
||
3695 |
send_result_message: |
|
3696 |
||
3697 |
DBUG_PRINT("info", ("result_code: %d", result_code)); |
|
3698 |
switch (result_code) { |
|
3699 |
case HA_ADMIN_NOT_IMPLEMENTED: |
|
3700 |
{
|
|
3701 |
char buf[ERRMSGSIZE+20]; |
|
3702 |
uint length=my_snprintf(buf, ERRMSGSIZE, |
|
3703 |
ER(ER_CHECK_NOT_IMPLEMENTED), operator_name); |
|
3704 |
protocol->store(STRING_WITH_LEN("note"), system_charset_info); |
|
3705 |
protocol->store(buf, length, system_charset_info); |
|
3706 |
}
|
|
3707 |
break; |
|
3708 |
||
3709 |
case HA_ADMIN_NOT_BASE_TABLE: |
|
3710 |
{
|
|
3711 |
char buf[ERRMSGSIZE+20]; |
|
3712 |
uint length= my_snprintf(buf, ERRMSGSIZE, |
|
3713 |
ER(ER_BAD_TABLE_ERROR), table_name); |
|
3714 |
protocol->store(STRING_WITH_LEN("note"), system_charset_info); |
|
3715 |
protocol->store(buf, length, system_charset_info); |
|
3716 |
}
|
|
3717 |
break; |
|
3718 |
||
3719 |
case HA_ADMIN_OK: |
|
3720 |
protocol->store(STRING_WITH_LEN("status"), system_charset_info); |
|
3721 |
protocol->store(STRING_WITH_LEN("OK"), system_charset_info); |
|
3722 |
break; |
|
3723 |
||
3724 |
case HA_ADMIN_FAILED: |
|
3725 |
protocol->store(STRING_WITH_LEN("status"), system_charset_info); |
|
3726 |
protocol->store(STRING_WITH_LEN("Operation failed"), |
|
3727 |
system_charset_info); |
|
3728 |
break; |
|
3729 |
||
3730 |
case HA_ADMIN_REJECT: |
|
3731 |
protocol->store(STRING_WITH_LEN("status"), system_charset_info); |
|
3732 |
protocol->store(STRING_WITH_LEN("Operation need committed state"), |
|
3733 |
system_charset_info); |
|
3734 |
open_for_modify= FALSE; |
|
3735 |
break; |
|
3736 |
||
3737 |
case HA_ADMIN_ALREADY_DONE: |
|
3738 |
protocol->store(STRING_WITH_LEN("status"), system_charset_info); |
|
3739 |
protocol->store(STRING_WITH_LEN("Table is already up to date"), |
|
3740 |
system_charset_info); |
|
3741 |
break; |
|
3742 |
||
3743 |
case HA_ADMIN_CORRUPT: |
|
3744 |
protocol->store(STRING_WITH_LEN("error"), system_charset_info); |
|
3745 |
protocol->store(STRING_WITH_LEN("Corrupt"), system_charset_info); |
|
3746 |
fatal_error=1; |
|
3747 |
break; |
|
3748 |
||
3749 |
case HA_ADMIN_INVALID: |
|
3750 |
protocol->store(STRING_WITH_LEN("error"), system_charset_info); |
|
3751 |
protocol->store(STRING_WITH_LEN("Invalid argument"), |
|
3752 |
system_charset_info); |
|
3753 |
break; |
|
3754 |
||
3755 |
case HA_ADMIN_TRY_ALTER: |
|
3756 |
{
|
|
3757 |
/*
|
|
3758 |
This is currently used only by InnoDB. ha_innobase::optimize() answers
|
|
3759 |
"try with alter", so here we close the table, do an ALTER TABLE,
|
|
3760 |
reopen the table and do ha_innobase::analyze() on it.
|
|
3761 |
*/
|
|
3762 |
ha_autocommit_or_rollback(thd, 0); |
|
3763 |
close_thread_tables(thd); |
|
3764 |
TABLE_LIST *save_next_local= table->next_local, |
|
3765 |
*save_next_global= table->next_global; |
|
3766 |
table->next_local= table->next_global= 0; |
|
3767 |
tmp_disable_binlog(thd); // binlogging is done by caller if wanted |
|
3768 |
result_code= mysql_recreate_table(thd, table); |
|
3769 |
reenable_binlog(thd); |
|
3770 |
/*
|
|
3771 |
mysql_recreate_table() can push OK or ERROR.
|
|
3772 |
Clear 'OK' status. If there is an error, keep it:
|
|
3773 |
we will store the error message in a result set row
|
|
3774 |
and then clear.
|
|
3775 |
*/
|
|
3776 |
if (thd->main_da.is_ok()) |
|
3777 |
thd->main_da.reset_diagnostics_area(); |
|
3778 |
ha_autocommit_or_rollback(thd, 0); |
|
3779 |
close_thread_tables(thd); |
|
3780 |
if (!result_code) // recreation went ok |
|
3781 |
{
|
|
3782 |
if ((table->table= open_ltable(thd, table, lock_type, 0)) && |
|
3783 |
((result_code= table->table->file->ha_analyze(thd, check_opt)) > 0)) |
|
3784 |
result_code= 0; // analyze went ok |
|
3785 |
}
|
|
3786 |
if (result_code) // either mysql_recreate_table or analyze failed |
|
3787 |
{
|
|
3788 |
DBUG_ASSERT(thd->is_error()); |
|
3789 |
if (thd->is_error()) |
|
3790 |
{
|
|
3791 |
const char *err_msg= thd->main_da.message(); |
|
3792 |
if (!thd->vio_ok()) |
|
3793 |
{
|
|
3794 |
sql_print_error(err_msg); |
|
3795 |
}
|
|
3796 |
else
|
|
3797 |
{
|
|
3798 |
/* Hijack the row already in-progress. */
|
|
3799 |
protocol->store(STRING_WITH_LEN("error"), system_charset_info); |
|
3800 |
protocol->store(err_msg, system_charset_info); |
|
3801 |
(void)protocol->write(); |
|
3802 |
/* Start off another row for HA_ADMIN_FAILED */
|
|
3803 |
protocol->prepare_for_resend(); |
|
3804 |
protocol->store(table_name, system_charset_info); |
|
3805 |
protocol->store(operator_name, system_charset_info); |
|
3806 |
}
|
|
3807 |
thd->clear_error(); |
|
3808 |
}
|
|
3809 |
}
|
|
3810 |
result_code= result_code ? HA_ADMIN_FAILED : HA_ADMIN_OK; |
|
3811 |
table->next_local= save_next_local; |
|
3812 |
table->next_global= save_next_global; |
|
3813 |
goto send_result_message; |
|
3814 |
}
|
|
3815 |
case HA_ADMIN_WRONG_CHECKSUM: |
|
3816 |
{
|
|
3817 |
protocol->store(STRING_WITH_LEN("note"), system_charset_info); |
|
3818 |
protocol->store(ER(ER_VIEW_CHECKSUM), strlen(ER(ER_VIEW_CHECKSUM)), |
|
3819 |
system_charset_info); |
|
3820 |
break; |
|
3821 |
}
|
|
3822 |
||
3823 |
case HA_ADMIN_NEEDS_UPGRADE: |
|
3824 |
case HA_ADMIN_NEEDS_ALTER: |
|
3825 |
{
|
|
3826 |
char buf[ERRMSGSIZE]; |
|
3827 |
uint length; |
|
3828 |
||
3829 |
protocol->store(STRING_WITH_LEN("error"), system_charset_info); |
|
3830 |
length=my_snprintf(buf, ERRMSGSIZE, ER(ER_TABLE_NEEDS_UPGRADE), table->table_name); |
|
3831 |
protocol->store(buf, length, system_charset_info); |
|
3832 |
fatal_error=1; |
|
3833 |
break; |
|
3834 |
}
|
|
3835 |
||
3836 |
default: // Probably HA_ADMIN_INTERNAL_ERROR |
|
3837 |
{
|
|
3838 |
char buf[ERRMSGSIZE+20]; |
|
3839 |
uint length=my_snprintf(buf, ERRMSGSIZE, |
|
3840 |
"Unknown - internal error %d during operation", |
|
3841 |
result_code); |
|
3842 |
protocol->store(STRING_WITH_LEN("error"), system_charset_info); |
|
3843 |
protocol->store(buf, length, system_charset_info); |
|
3844 |
fatal_error=1; |
|
3845 |
break; |
|
3846 |
}
|
|
3847 |
}
|
|
3848 |
if (table->table) |
|
3849 |
{
|
|
3850 |
if (fatal_error) |
|
3851 |
table->table->s->version=0; // Force close of table |
|
3852 |
else if (open_for_modify) |
|
3853 |
{
|
|
3854 |
if (table->table->s->tmp_table) |
|
3855 |
table->table->file->info(HA_STATUS_CONST); |
|
3856 |
else
|
|
3857 |
{
|
|
3858 |
pthread_mutex_lock(&LOCK_open); |
|
3859 |
remove_table_from_cache(thd, table->table->s->db.str, |
|
3860 |
table->table->s->table_name.str, RTFC_NO_FLAG); |
|
3861 |
pthread_mutex_unlock(&LOCK_open); |
|
3862 |
}
|
|
3863 |
}
|
|
3864 |
}
|
|
3865 |
ha_autocommit_or_rollback(thd, 0); |
|
3866 |
end_trans(thd, COMMIT); |
|
3867 |
close_thread_tables(thd); |
|
3868 |
table->table=0; // For query cache |
|
3869 |
if (protocol->write()) |
|
3870 |
goto err; |
|
3871 |
}
|
|
3872 |
||
3873 |
my_eof(thd); |
|
3874 |
DBUG_RETURN(FALSE); |
|
3875 |
||
3876 |
err: |
|
3877 |
ha_autocommit_or_rollback(thd, 1); |
|
3878 |
end_trans(thd, ROLLBACK); |
|
3879 |
close_thread_tables(thd); // Shouldn't be needed |
|
3880 |
if (table) |
|
3881 |
table->table=0; |
|
3882 |
DBUG_RETURN(TRUE); |
|
3883 |
}
|
|
3884 |
||
3885 |
||
3886 |
bool mysql_repair_table(THD* thd, TABLE_LIST* tables, HA_CHECK_OPT* check_opt) |
|
3887 |
{
|
|
3888 |
DBUG_ENTER("mysql_repair_table"); |
|
3889 |
DBUG_RETURN(mysql_admin_table(thd, tables, check_opt, |
|
3890 |
"repair", TL_WRITE, 1, |
|
3891 |
test(check_opt->sql_flags & TT_USEFRM), |
|
3892 |
HA_OPEN_FOR_REPAIR, |
|
3893 |
&prepare_for_repair, |
|
3894 |
&handler::ha_repair)); |
|
3895 |
}
|
|
3896 |
||
3897 |
||
3898 |
bool mysql_optimize_table(THD* thd, TABLE_LIST* tables, HA_CHECK_OPT* check_opt) |
|
3899 |
{
|
|
3900 |
DBUG_ENTER("mysql_optimize_table"); |
|
3901 |
DBUG_RETURN(mysql_admin_table(thd, tables, check_opt, |
|
3902 |
"optimize", TL_WRITE, 1,0,0,0, |
|
3903 |
&handler::ha_optimize)); |
|
3904 |
}
|
|
3905 |
||
3906 |
||
3907 |
/*
|
|
3908 |
Assigned specified indexes for a table into key cache
|
|
3909 |
||
3910 |
SYNOPSIS
|
|
3911 |
mysql_assign_to_keycache()
|
|
3912 |
thd Thread object
|
|
3913 |
tables Table list (one table only)
|
|
3914 |
||
3915 |
RETURN VALUES
|
|
3916 |
FALSE ok
|
|
3917 |
TRUE error
|
|
3918 |
*/
|
|
3919 |
||
3920 |
bool mysql_assign_to_keycache(THD* thd, TABLE_LIST* tables, |
|
3921 |
LEX_STRING *key_cache_name) |
|
3922 |
{
|
|
3923 |
HA_CHECK_OPT check_opt; |
|
3924 |
KEY_CACHE *key_cache; |
|
3925 |
DBUG_ENTER("mysql_assign_to_keycache"); |
|
3926 |
||
3927 |
check_opt.init(); |
|
3928 |
pthread_mutex_lock(&LOCK_global_system_variables); |
|
3929 |
if (!(key_cache= get_key_cache(key_cache_name))) |
|
3930 |
{
|
|
3931 |
pthread_mutex_unlock(&LOCK_global_system_variables); |
|
3932 |
my_error(ER_UNKNOWN_KEY_CACHE, MYF(0), key_cache_name->str); |
|
3933 |
DBUG_RETURN(TRUE); |
|
3934 |
}
|
|
3935 |
pthread_mutex_unlock(&LOCK_global_system_variables); |
|
3936 |
check_opt.key_cache= key_cache; |
|
3937 |
DBUG_RETURN(mysql_admin_table(thd, tables, &check_opt, |
|
3938 |
"assign_to_keycache", TL_READ_NO_INSERT, 0, 0, |
|
3939 |
0, 0, &handler::assign_to_keycache)); |
|
3940 |
}
|
|
3941 |
||
3942 |
||
3943 |
/*
|
|
3944 |
Reassign all tables assigned to a key cache to another key cache
|
|
3945 |
||
3946 |
SYNOPSIS
|
|
3947 |
reassign_keycache_tables()
|
|
3948 |
thd Thread object
|
|
3949 |
src_cache Reference to the key cache to clean up
|
|
3950 |
dest_cache New key cache
|
|
3951 |
||
3952 |
NOTES
|
|
3953 |
This is called when one sets a key cache size to zero, in which
|
|
3954 |
case we have to move the tables associated to this key cache to
|
|
3955 |
the "default" one.
|
|
3956 |
||
3957 |
One has to ensure that one never calls this function while
|
|
3958 |
some other thread is changing the key cache. This is assured by
|
|
3959 |
the caller setting src_cache->in_init before calling this function.
|
|
3960 |
||
3961 |
We don't delete the old key cache as there may still be pointers pointing
|
|
3962 |
to it for a while after this function returns.
|
|
3963 |
||
3964 |
RETURN VALUES
|
|
3965 |
0 ok
|
|
3966 |
*/
|
|
3967 |
||
3968 |
int reassign_keycache_tables(THD *thd, KEY_CACHE *src_cache, |
|
3969 |
KEY_CACHE *dst_cache) |
|
3970 |
{
|
|
3971 |
DBUG_ENTER("reassign_keycache_tables"); |
|
3972 |
||
3973 |
DBUG_ASSERT(src_cache != dst_cache); |
|
3974 |
DBUG_ASSERT(src_cache->in_init); |
|
3975 |
src_cache->param_buff_size= 0; // Free key cache |
|
3976 |
ha_resize_key_cache(src_cache); |
|
3977 |
ha_change_key_cache(src_cache, dst_cache); |
|
3978 |
DBUG_RETURN(0); |
|
3979 |
}
|
|
3980 |
||
3981 |
||
3982 |
/*
|
|
3983 |
Preload specified indexes for a table into key cache
|
|
3984 |
||
3985 |
SYNOPSIS
|
|
3986 |
mysql_preload_keys()
|
|
3987 |
thd Thread object
|
|
3988 |
tables Table list (one table only)
|
|
3989 |
||
3990 |
RETURN VALUES
|
|
3991 |
FALSE ok
|
|
3992 |
TRUE error
|
|
3993 |
*/
|
|
3994 |
||
3995 |
bool mysql_preload_keys(THD* thd, TABLE_LIST* tables) |
|
3996 |
{
|
|
3997 |
DBUG_ENTER("mysql_preload_keys"); |
|
3998 |
/*
|
|
3999 |
We cannot allow concurrent inserts. The storage engine reads
|
|
4000 |
directly from the index file, bypassing the cache. It could read
|
|
4001 |
outdated information if parallel inserts into cache blocks happen.
|
|
4002 |
*/
|
|
4003 |
DBUG_RETURN(mysql_admin_table(thd, tables, 0, |
|
4004 |
"preload_keys", TL_READ_NO_INSERT, 0, 0, 0, 0, |
|
4005 |
&handler::preload_keys)); |
|
4006 |
}
|
|
4007 |
||
4008 |
||
4009 |
||
4010 |
/**
|
|
4011 |
@brief Create frm file based on I_S table
|
|
4012 |
||
4013 |
@param[in] thd thread handler
|
|
4014 |
@param[in] schema_table I_S table
|
|
4015 |
@param[in] dst_path path where frm should be created
|
|
4016 |
@param[in] create_info Create info
|
|
4017 |
||
4018 |
@return Operation status
|
|
4019 |
@retval 0 success
|
|
4020 |
@retval 1 error
|
|
4021 |
*/
|
|
4022 |
||
4023 |
||
4024 |
bool mysql_create_like_schema_frm(THD* thd, TABLE_LIST* schema_table, |
|
4025 |
char *dst_path, HA_CREATE_INFO *create_info) |
|
4026 |
{
|
|
4027 |
HA_CREATE_INFO local_create_info; |
|
4028 |
Alter_info alter_info; |
|
4029 |
bool tmp_table= (create_info->options & HA_LEX_CREATE_TMP_TABLE); |
|
4030 |
uint keys= schema_table->table->s->keys; |
|
4031 |
uint db_options= 0; |
|
4032 |
DBUG_ENTER("mysql_create_like_schema_frm"); |
|
4033 |
||
4034 |
bzero((char*) &local_create_info, sizeof(local_create_info)); |
|
4035 |
local_create_info.db_type= schema_table->table->s->db_type(); |
|
4036 |
local_create_info.row_type= schema_table->table->s->row_type; |
|
4037 |
local_create_info.default_table_charset=default_charset_info; |
|
4038 |
alter_info.flags= (ALTER_CHANGE_COLUMN | ALTER_RECREATE); |
|
4039 |
schema_table->table->use_all_columns(); |
|
4040 |
if (mysql_prepare_alter_table(thd, schema_table->table, |
|
4041 |
&local_create_info, &alter_info)) |
|
4042 |
DBUG_RETURN(1); |
|
4043 |
if (mysql_prepare_create_table(thd, &local_create_info, &alter_info, |
|
4044 |
tmp_table, &db_options, |
|
4045 |
schema_table->table->file, |
|
4046 |
&schema_table->table->s->key_info, &keys, 0)) |
|
4047 |
DBUG_RETURN(1); |
|
4048 |
local_create_info.max_rows= 0; |
|
4049 |
if (mysql_create_frm(thd, dst_path, NullS, NullS, |
|
4050 |
&local_create_info, alter_info.create_list, |
|
4051 |
keys, schema_table->table->s->key_info, |
|
4052 |
schema_table->table->file)) |
|
4053 |
DBUG_RETURN(1); |
|
4054 |
DBUG_RETURN(0); |
|
4055 |
}
|
|
4056 |
||
4057 |
||
4058 |
/*
|
|
4059 |
Create a table identical to the specified table
|
|
4060 |
||
4061 |
SYNOPSIS
|
|
4062 |
mysql_create_like_table()
|
|
4063 |
thd Thread object
|
|
4064 |
table Table list element for target table
|
|
4065 |
src_table Table list element for source table
|
|
4066 |
create_info Create info
|
|
4067 |
||
4068 |
RETURN VALUES
|
|
4069 |
FALSE OK
|
|
4070 |
TRUE error
|
|
4071 |
*/
|
|
4072 |
||
4073 |
bool mysql_create_like_table(THD* thd, TABLE_LIST* table, TABLE_LIST* src_table, |
|
4074 |
HA_CREATE_INFO *create_info) |
|
4075 |
{
|
|
4076 |
TABLE *name_lock= 0; |
|
4077 |
char src_path[FN_REFLEN], dst_path[FN_REFLEN]; |
|
4078 |
uint dst_path_length; |
|
4079 |
char *db= table->db; |
|
4080 |
char *table_name= table->table_name; |
|
4081 |
int err; |
|
4082 |
bool res= TRUE; |
|
4083 |
uint not_used; |
|
4084 |
DBUG_ENTER("mysql_create_like_table"); |
|
4085 |
||
4086 |
||
4087 |
/* CREATE TABLE ... LIKE is not allowed for views. */
|
|
4088 |
src_table->required_type= FRMTYPE_TABLE; |
|
4089 |
||
4090 |
/*
|
|
4091 |
By opening source table we guarantee that it exists and no concurrent
|
|
4092 |
DDL operation will mess with it. Later we also take an exclusive
|
|
4093 |
name-lock on target table name, which makes copying of .frm file,
|
|
4094 |
call to ha_create_table() and binlogging atomic against concurrent DML
|
|
4095 |
and DDL operations on target table. Thus by holding both these "locks"
|
|
4096 |
we ensure that our statement is properly isolated from all concurrent
|
|
4097 |
operations which matter.
|
|
4098 |
*/
|
|
4099 |
if (open_tables(thd, &src_table, ¬_used, 0)) |
|
4100 |
DBUG_RETURN(TRUE); |
|
4101 |
||
4102 |
strxmov(src_path, src_table->table->s->path.str, reg_ext, NullS); |
|
4103 |
||
4104 |
DBUG_EXECUTE_IF("sleep_create_like_before_check_if_exists", my_sleep(6000000);); |
|
4105 |
||
4106 |
/*
|
|
4107 |
Check that destination tables does not exist. Note that its name
|
|
4108 |
was already checked when it was added to the table list.
|
|
4109 |
*/
|
|
4110 |
if (create_info->options & HA_LEX_CREATE_TMP_TABLE) |
|
4111 |
{
|
|
4112 |
if (find_temporary_table(thd, db, table_name)) |
|
4113 |
goto table_exists; |
|
4114 |
dst_path_length= build_tmptable_filename(thd, dst_path, sizeof(dst_path)); |
|
4115 |
create_info->table_options|= HA_CREATE_DELAY_KEY_WRITE; |
|
4116 |
}
|
|
4117 |
else
|
|
4118 |
{
|
|
4119 |
if (lock_table_name_if_not_cached(thd, db, table_name, &name_lock)) |
|
4120 |
goto err; |
|
4121 |
if (!name_lock) |
|
4122 |
goto table_exists; |
|
4123 |
dst_path_length= build_table_filename(dst_path, sizeof(dst_path), |
|
4124 |
db, table_name, reg_ext, 0); |
|
4125 |
if (!access(dst_path, F_OK)) |
|
4126 |
goto table_exists; |
|
4127 |
}
|
|
4128 |
||
4129 |
DBUG_EXECUTE_IF("sleep_create_like_before_copy", my_sleep(6000000);); |
|
4130 |
||
4131 |
/*
|
|
4132 |
Create a new table by copying from source table
|
|
4133 |
||
4134 |
Altough exclusive name-lock on target table protects us from concurrent
|
|
4135 |
DML and DDL operations on it we still want to wrap .FRM creation and call
|
|
4136 |
to ha_create_table() in critical section protected by LOCK_open in order
|
|
4137 |
to provide minimal atomicity against operations which disregard name-locks,
|
|
4138 |
like I_S implementation, for example. This is a temporary and should not
|
|
4139 |
be copied. Instead we should fix our code to always honor name-locks.
|
|
4140 |
||
4141 |
Also some engines (e.g. NDB cluster) require that LOCK_open should be held
|
|
4142 |
during the call to ha_create_table(). See bug #28614 for more info.
|
|
4143 |
*/
|
|
4144 |
VOID(pthread_mutex_lock(&LOCK_open)); |
|
4145 |
if (src_table->schema_table) |
|
4146 |
{
|
|
4147 |
if (mysql_create_like_schema_frm(thd, src_table, dst_path, create_info)) |
|
4148 |
{
|
|
4149 |
VOID(pthread_mutex_unlock(&LOCK_open)); |
|
4150 |
goto err; |
|
4151 |
}
|
|
4152 |
}
|
|
4153 |
else if (my_copy(src_path, dst_path, MYF(MY_DONT_OVERWRITE_FILE))) |
|
4154 |
{
|
|
4155 |
if (my_errno == ENOENT) |
|
4156 |
my_error(ER_BAD_DB_ERROR,MYF(0),db); |
|
4157 |
else
|
|
4158 |
my_error(ER_CANT_CREATE_FILE,MYF(0),dst_path,my_errno); |
|
4159 |
VOID(pthread_mutex_unlock(&LOCK_open)); |
|
4160 |
goto err; |
|
4161 |
}
|
|
4162 |
||
4163 |
/*
|
|
4164 |
As mysql_truncate don't work on a new table at this stage of
|
|
4165 |
creation, instead create the table directly (for both normal
|
|
4166 |
and temporary tables).
|
|
4167 |
*/
|
|
4168 |
DBUG_EXECUTE_IF("sleep_create_like_before_ha_create", my_sleep(6000000);); |
|
4169 |
||
4170 |
dst_path[dst_path_length - reg_ext_length]= '\0'; // Remove .frm |
|
4171 |
if (thd->variables.keep_files_on_create) |
|
4172 |
create_info->options|= HA_CREATE_KEEP_FILES; |
|
4173 |
err= ha_create_table(thd, dst_path, db, table_name, create_info, 1); |
|
4174 |
VOID(pthread_mutex_unlock(&LOCK_open)); |
|
4175 |
||
4176 |
if (create_info->options & HA_LEX_CREATE_TMP_TABLE) |
|
4177 |
{
|
|
4178 |
if (err || !open_temporary_table(thd, dst_path, db, table_name, 1, |
|
4179 |
OTM_OPEN)) |
|
4180 |
{
|
|
4181 |
(void) rm_temporary_table(create_info->db_type, |
|
4182 |
dst_path, false); /* purecov: inspected */ |
|
4183 |
goto err; /* purecov: inspected */ |
|
4184 |
}
|
|
4185 |
}
|
|
4186 |
else if (err) |
|
4187 |
{
|
|
4188 |
(void) quick_rm_table(create_info->db_type, db, |
|
4189 |
table_name, 0); /* purecov: inspected */ |
|
4190 |
goto err; /* purecov: inspected */ |
|
4191 |
}
|
|
4192 |
||
4193 |
DBUG_EXECUTE_IF("sleep_create_like_before_binlogging", my_sleep(6000000);); |
|
4194 |
||
4195 |
/*
|
|
4196 |
We have to write the query before we unlock the tables.
|
|
4197 |
*/
|
|
4198 |
if (thd->current_stmt_binlog_row_based) |
|
4199 |
{
|
|
4200 |
/*
|
|
4201 |
Since temporary tables are not replicated under row-based
|
|
4202 |
replication, CREATE TABLE ... LIKE ... needs special
|
|
4203 |
treatement. We have four cases to consider, according to the
|
|
4204 |
following decision table:
|
|
4205 |
||
4206 |
==== ========= ========= ==============================
|
|
4207 |
Case Target Source Write to binary log
|
|
4208 |
==== ========= ========= ==============================
|
|
4209 |
1 normal normal Original statement
|
|
4210 |
2 normal temporary Generated statement
|
|
4211 |
3 temporary normal Nothing
|
|
4212 |
4 temporary temporary Nothing
|
|
4213 |
==== ========= ========= ==============================
|
|
4214 |
*/
|
|
4215 |
if (!(create_info->options & HA_LEX_CREATE_TMP_TABLE)) |
|
4216 |
{
|
|
4217 |
if (src_table->table->s->tmp_table) // Case 2 |
|
4218 |
{
|
|
4219 |
char buf[2048]; |
|
4220 |
String query(buf, sizeof(buf), system_charset_info); |
|
4221 |
query.length(0); // Have to zero it since constructor doesn't |
|
4222 |
||
4223 |
||
4224 |
/*
|
|
4225 |
Here we open the destination table, on which we already have
|
|
4226 |
name-lock. This is needed for store_create_info() to work.
|
|
4227 |
The table will be closed by unlink_open_table() at the end
|
|
4228 |
of this function.
|
|
4229 |
*/
|
|
4230 |
table->table= name_lock; |
|
4231 |
VOID(pthread_mutex_lock(&LOCK_open)); |
|
4232 |
if (reopen_name_locked_table(thd, table, FALSE)) |
|
4233 |
{
|
|
4234 |
VOID(pthread_mutex_unlock(&LOCK_open)); |
|
4235 |
goto err; |
|
4236 |
}
|
|
4237 |
VOID(pthread_mutex_unlock(&LOCK_open)); |
|
4238 |
||
4239 |
IF_DBUG(int result=) store_create_info(thd, table, &query, |
|
4240 |
create_info); |
|
4241 |
||
4242 |
DBUG_ASSERT(result == 0); // store_create_info() always return 0 |
|
4243 |
write_bin_log(thd, TRUE, query.ptr(), query.length()); |
|
4244 |
}
|
|
4245 |
else // Case 1 |
|
4246 |
write_bin_log(thd, TRUE, thd->query, thd->query_length); |
|
4247 |
}
|
|
4248 |
/*
|
|
4249 |
Case 3 and 4 does nothing under RBR
|
|
4250 |
*/
|
|
4251 |
}
|
|
4252 |
else
|
|
4253 |
write_bin_log(thd, TRUE, thd->query, thd->query_length); |
|
4254 |
||
4255 |
res= FALSE; |
|
4256 |
goto err; |
|
4257 |
||
4258 |
table_exists: |
|
4259 |
if (create_info->options & HA_LEX_CREATE_IF_NOT_EXISTS) |
|
4260 |
{
|
|
4261 |
char warn_buff[MYSQL_ERRMSG_SIZE]; |
|
4262 |
my_snprintf(warn_buff, sizeof(warn_buff), |
|
4263 |
ER(ER_TABLE_EXISTS_ERROR), table_name); |
|
4264 |
push_warning(thd, MYSQL_ERROR::WARN_LEVEL_NOTE, |
|
4265 |
ER_TABLE_EXISTS_ERROR,warn_buff); |
|
4266 |
res= FALSE; |
|
4267 |
}
|
|
4268 |
else
|
|
4269 |
my_error(ER_TABLE_EXISTS_ERROR, MYF(0), table_name); |
|
4270 |
||
4271 |
err: |
|
4272 |
if (name_lock) |
|
4273 |
{
|
|
4274 |
pthread_mutex_lock(&LOCK_open); |
|
4275 |
unlink_open_table(thd, name_lock, FALSE); |
|
4276 |
pthread_mutex_unlock(&LOCK_open); |
|
4277 |
}
|
|
4278 |
DBUG_RETURN(res); |
|
4279 |
}
|
|
4280 |
||
4281 |
||
4282 |
bool mysql_analyze_table(THD* thd, TABLE_LIST* tables, HA_CHECK_OPT* check_opt) |
|
4283 |
{
|
|
4284 |
thr_lock_type lock_type = TL_READ_NO_INSERT; |
|
4285 |
||
4286 |
DBUG_ENTER("mysql_analyze_table"); |
|
4287 |
DBUG_RETURN(mysql_admin_table(thd, tables, check_opt, |
|
4288 |
"analyze", lock_type, 1, 0, 0, 0, |
|
4289 |
&handler::ha_analyze)); |
|
4290 |
}
|
|
4291 |
||
4292 |
||
4293 |
bool mysql_check_table(THD* thd, TABLE_LIST* tables,HA_CHECK_OPT* check_opt) |
|
4294 |
{
|
|
4295 |
thr_lock_type lock_type = TL_READ_NO_INSERT; |
|
4296 |
||
4297 |
DBUG_ENTER("mysql_check_table"); |
|
4298 |
DBUG_RETURN(mysql_admin_table(thd, tables, check_opt, |
|
4299 |
"check", lock_type, |
|
4300 |
0, 0, HA_OPEN_FOR_REPAIR, 0, |
|
4301 |
&handler::ha_check)); |
|
4302 |
}
|
|
4303 |
||
4304 |
||
4305 |
/* table_list should contain just one table */
|
|
4306 |
static int |
|
4307 |
mysql_discard_or_import_tablespace(THD *thd, |
|
4308 |
TABLE_LIST *table_list, |
|
4309 |
enum tablespace_op_type tablespace_op) |
|
4310 |
{
|
|
4311 |
TABLE *table; |
|
4312 |
my_bool discard; |
|
4313 |
int error; |
|
4314 |
DBUG_ENTER("mysql_discard_or_import_tablespace"); |
|
4315 |
||
4316 |
/*
|
|
4317 |
Note that DISCARD/IMPORT TABLESPACE always is the only operation in an
|
|
4318 |
ALTER TABLE
|
|
4319 |
*/
|
|
4320 |
||
4321 |
thd_proc_info(thd, "discard_or_import_tablespace"); |
|
4322 |
||
4323 |
discard= test(tablespace_op == DISCARD_TABLESPACE); |
|
4324 |
||
4325 |
/*
|
|
4326 |
We set this flag so that ha_innobase::open and ::external_lock() do
|
|
4327 |
not complain when we lock the table
|
|
4328 |
*/
|
|
4329 |
thd->tablespace_op= TRUE; |
|
4330 |
if (!(table=open_ltable(thd, table_list, TL_WRITE, 0))) |
|
4331 |
{
|
|
4332 |
thd->tablespace_op=FALSE; |
|
4333 |
DBUG_RETURN(-1); |
|
4334 |
}
|
|
4335 |
||
4336 |
error= table->file->ha_discard_or_import_tablespace(discard); |
|
4337 |
||
4338 |
thd_proc_info(thd, "end"); |
|
4339 |
||
4340 |
if (error) |
|
4341 |
goto err; |
|
4342 |
||
4343 |
/* The ALTER TABLE is always in its own transaction */
|
|
4344 |
error = ha_autocommit_or_rollback(thd, 0); |
|
4345 |
if (end_active_trans(thd)) |
|
4346 |
error=1; |
|
4347 |
if (error) |
|
4348 |
goto err; |
|
4349 |
write_bin_log(thd, FALSE, thd->query, thd->query_length); |
|
4350 |
||
4351 |
err: |
|
4352 |
ha_autocommit_or_rollback(thd, error); |
|
4353 |
thd->tablespace_op=FALSE; |
|
4354 |
||
4355 |
if (error == 0) |
|
4356 |
{
|
|
4357 |
my_ok(thd); |
|
4358 |
DBUG_RETURN(0); |
|
4359 |
}
|
|
4360 |
||
4361 |
table->file->print_error(error, MYF(0)); |
|
4362 |
||
4363 |
DBUG_RETURN(-1); |
|
4364 |
}
|
|
4365 |
||
4366 |
/**
|
|
4367 |
Copy all changes detected by parser to the HA_ALTER_FLAGS
|
|
4368 |
*/
|
|
4369 |
||
4370 |
void setup_ha_alter_flags(Alter_info *alter_info, HA_ALTER_FLAGS *alter_flags) |
|
4371 |
{
|
|
4372 |
uint flags= alter_info->flags; |
|
4373 |
||
4374 |
if (ALTER_ADD_COLUMN & flags) |
|
4375 |
*alter_flags|= HA_ADD_COLUMN; |
|
4376 |
if (ALTER_DROP_COLUMN & flags) |
|
4377 |
*alter_flags|= HA_DROP_COLUMN; |
|
4378 |
if (ALTER_RENAME & flags) |
|
4379 |
*alter_flags|= HA_RENAME_TABLE; |
|
4380 |
if (ALTER_CHANGE_COLUMN & flags) |
|
4381 |
*alter_flags|= HA_CHANGE_COLUMN; |
|
4382 |
if (ALTER_COLUMN_DEFAULT & flags) |
|
4383 |
*alter_flags|= HA_COLUMN_DEFAULT_VALUE; |
|
4384 |
if (ALTER_COLUMN_STORAGE & flags) |
|
4385 |
*alter_flags|= HA_COLUMN_STORAGE; |
|
4386 |
if (ALTER_COLUMN_FORMAT & flags) |
|
4387 |
*alter_flags|= HA_COLUMN_FORMAT; |
|
4388 |
if (ALTER_COLUMN_ORDER & flags) |
|
4389 |
*alter_flags|= HA_ALTER_COLUMN_ORDER; |
|
4390 |
if (ALTER_STORAGE & flags) |
|
4391 |
*alter_flags|= HA_ALTER_STORAGE; |
|
4392 |
if (ALTER_ROW_FORMAT & flags) |
|
4393 |
*alter_flags|= HA_ALTER_ROW_FORMAT; |
|
4394 |
if (ALTER_RECREATE & flags) |
|
4395 |
*alter_flags|= HA_RECREATE; |
|
4396 |
if (ALTER_FOREIGN_KEY & flags) |
|
4397 |
*alter_flags|= HA_ALTER_FOREIGN_KEY; |
|
4398 |
}
|
|
4399 |
||
4400 |
||
4401 |
/**
|
|
4402 |
@param thd Thread
|
|
4403 |
@param table The original table.
|
|
4404 |
@param alter_info Alter options, fields and keys for the new
|
|
4405 |
table.
|
|
4406 |
@param create_info Create options for the new table.
|
|
4407 |
@param order_num Number of order list elements.
|
|
4408 |
@param[out] ha_alter_flags Flags that indicate what will be changed
|
|
4409 |
@param[out] ha_alter_info Data structures needed for on-line alter
|
|
4410 |
@param[out] table_changes Information about particular change
|
|
4411 |
||
4412 |
First argument 'table' contains information of the original
|
|
4413 |
table, which includes all corresponding parts that the new
|
|
4414 |
table has in arguments create_list, key_list and create_info.
|
|
4415 |
||
4416 |
By comparing the changes between the original and new table
|
|
4417 |
we can determine how much it has changed after ALTER TABLE
|
|
4418 |
and whether we need to make a copy of the table, or just change
|
|
4419 |
the .frm file.
|
|
4420 |
||
4421 |
Mark any changes detected in the ha_alter_flags.
|
|
4422 |
||
4423 |
If there are no data changes, but index changes, 'index_drop_buffer'
|
|
4424 |
and/or 'index_add_buffer' are populated with offsets into
|
|
4425 |
table->key_info or key_info_buffer respectively for the indexes
|
|
4426 |
that need to be dropped and/or (re-)created.
|
|
4427 |
||
4428 |
@retval TRUE error
|
|
4429 |
@retval FALSE success
|
|
4430 |
*/
|
|
4431 |
||
4432 |
static
|
|
4433 |
bool
|
|
4434 |
compare_tables(THD *thd, |
|
4435 |
TABLE *table, |
|
4436 |
Alter_info *alter_info, |
|
4437 |
HA_CREATE_INFO *create_info, |
|
4438 |
uint order_num, |
|
4439 |
HA_ALTER_FLAGS *alter_flags, |
|
4440 |
HA_ALTER_INFO *ha_alter_info, |
|
4441 |
uint *table_changes) |
|
4442 |
{
|
|
4443 |
Field **f_ptr, *field; |
|
4444 |
uint table_changes_local= 0; |
|
4445 |
List_iterator_fast<Create_field> new_field_it(alter_info->create_list); |
|
4446 |
Create_field *new_field; |
|
4447 |
KEY_PART_INFO *key_part; |
|
4448 |
KEY_PART_INFO *end; |
|
4449 |
/*
|
|
4450 |
Remember if the new definition has new VARCHAR column;
|
|
4451 |
create_info->varchar will be reset in mysql_prepare_create_table.
|
|
4452 |
*/
|
|
4453 |
bool varchar= create_info->varchar; |
|
4454 |
DBUG_ENTER("compare_tables"); |
|
4455 |
||
4456 |
{
|
|
4457 |
/*
|
|
4458 |
Create a copy of alter_info.
|
|
4459 |
To compare the new and old table definitions, we need to "prepare"
|
|
4460 |
the new definition - transform it from parser output to a format
|
|
4461 |
that describes the final table layout (all column defaults are
|
|
4462 |
initialized, duplicate columns are removed). This is done by
|
|
4463 |
mysql_prepare_create_table. Unfortunately,
|
|
4464 |
mysql_prepare_create_table performs its transformations
|
|
4465 |
"in-place", that is, modifies the argument. Since we would
|
|
4466 |
like to keep compare_tables() idempotent (not altering any
|
|
4467 |
of the arguments) we create a copy of alter_info here and
|
|
4468 |
pass it to mysql_prepare_create_table, then use the result
|
|
4469 |
to evaluate possibility of fast ALTER TABLE, and then
|
|
4470 |
destroy the copy.
|
|
4471 |
*/
|
|
4472 |
Alter_info tmp_alter_info(*alter_info, thd->mem_root); |
|
4473 |
THD *thd= table->in_use; |
|
4474 |
uint db_options= 0; /* not used */ |
|
4475 |
/* Create the prepared information. */
|
|
4476 |
if (mysql_prepare_create_table(thd, create_info, |
|
4477 |
&tmp_alter_info, |
|
4478 |
(table->s->tmp_table != NO_TMP_TABLE), |
|
4479 |
&db_options, |
|
4480 |
table->file, |
|
4481 |
&ha_alter_info->key_info_buffer, |
|
4482 |
&ha_alter_info->key_count, |
|
4483 |
/* select_field_count */ 0)) |
|
4484 |
DBUG_RETURN(TRUE); |
|
4485 |
/* Allocate result buffers. */
|
|
4486 |
if (! (ha_alter_info->index_drop_buffer= |
|
4487 |
(uint*) thd->alloc(sizeof(uint) * table->s->keys)) || |
|
4488 |
! (ha_alter_info->index_add_buffer= |
|
4489 |
(uint*) thd->alloc(sizeof(uint) * |
|
4490 |
tmp_alter_info.key_list.elements))) |
|
4491 |
DBUG_RETURN(TRUE); |
|
4492 |
}
|
|
4493 |
/*
|
|
4494 |
First we setup ha_alter_flags based on what was detected
|
|
4495 |
by parser
|
|
4496 |
*/
|
|
4497 |
setup_ha_alter_flags(alter_info, alter_flags); |
|
4498 |
||
4499 |
#ifndef DBUG_OFF
|
|
4500 |
{
|
|
4501 |
char dbug_string[HA_MAX_ALTER_FLAGS+1]; |
|
4502 |
alter_flags->print(dbug_string); |
|
4503 |
DBUG_PRINT("info", ("alter_flags: %s", (char *) dbug_string)); |
|
4504 |
}
|
|
4505 |
#endif
|
|
4506 |
||
4507 |
/*
|
|
4508 |
Some very basic checks. If number of fields changes, or the
|
|
4509 |
handler, we need to run full ALTER TABLE. In the future
|
|
4510 |
new fields can be added and old dropped without copy, but
|
|
4511 |
not yet.
|
|
4512 |
||
4513 |
Test also that engine was not given during ALTER TABLE, or
|
|
4514 |
we are force to run regular alter table (copy).
|
|
4515 |
E.g. ALTER TABLE tbl_name ENGINE=MyISAM.
|
|
4516 |
||
4517 |
For the following ones we also want to run regular alter table:
|
|
4518 |
ALTER TABLE tbl_name ORDER BY ..
|
|
4519 |
ALTER TABLE tbl_name CONVERT TO CHARACTER SET ..
|
|
4520 |
||
4521 |
At the moment we can't handle altering temporary tables without a copy.
|
|
4522 |
We also test if OPTIMIZE TABLE was given and was mapped to alter table.
|
|
4523 |
In that case we always do full copy.
|
|
4524 |
||
4525 |
There was a bug prior to mysql-4.0.25. Number of null fields was
|
|
4526 |
calculated incorrectly. As a result frm and data files gets out of
|
|
4527 |
sync after fast alter table. There is no way to determine by which
|
|
4528 |
mysql version (in 4.0 and 4.1 branches) table was created, thus we
|
|
4529 |
disable fast alter table for all tables created by mysql versions
|
|
4530 |
prior to 5.0 branch.
|
|
4531 |
See BUG#6236.
|
|
4532 |
*/
|
|
4533 |
if (table->s->fields != alter_info->create_list.elements || |
|
4534 |
table->s->db_type() != create_info->db_type || |
|
4535 |
table->s->tmp_table || |
|
4536 |
create_info->used_fields & HA_CREATE_USED_ENGINE || |
|
4537 |
create_info->used_fields & HA_CREATE_USED_CHARSET || |
|
4538 |
create_info->used_fields & HA_CREATE_USED_DEFAULT_CHARSET || |
|
4539 |
create_info->used_fields & HA_CREATE_USED_ROW_FORMAT || |
|
4540 |
(alter_info->flags & (ALTER_RECREATE | ALTER_FOREIGN_KEY)) || |
|
4541 |
order_num || |
|
4542 |
!table->s->mysql_version || |
|
4543 |
(table->s->frm_version < FRM_VER_TRUE_VARCHAR && varchar)) |
|
4544 |
{
|
|
4545 |
*table_changes= IS_EQUAL_NO; |
|
4546 |
/*
|
|
4547 |
Check what has changed and set alter_flags
|
|
4548 |
*/
|
|
4549 |
if (table->s->fields < alter_info->create_list.elements) |
|
4550 |
*alter_flags|= HA_ADD_COLUMN; |
|
4551 |
else if (table->s->fields > alter_info->create_list.elements) |
|
4552 |
*alter_flags|= HA_DROP_COLUMN; |
|
4553 |
if (create_info->db_type != table->s->db_type() || |
|
4554 |
create_info->used_fields & HA_CREATE_USED_ENGINE) |
|
4555 |
*alter_flags|= HA_ALTER_STORAGE_ENGINE; |
|
4556 |
if (create_info->used_fields & HA_CREATE_USED_CHARSET) |
|
4557 |
*alter_flags|= HA_CHANGE_CHARACTER_SET; |
|
4558 |
if (create_info->used_fields & HA_CREATE_USED_DEFAULT_CHARSET) |
|
4559 |
*alter_flags|= HA_SET_DEFAULT_CHARACTER_SET; |
|
4560 |
if (alter_info->flags & ALTER_RECREATE) |
|
4561 |
*alter_flags|= HA_RECREATE; |
|
4562 |
/* TODO check for ADD/DROP FOREIGN KEY */
|
|
4563 |
if (alter_info->flags & ALTER_FOREIGN_KEY) |
|
4564 |
*alter_flags|= HA_ALTER_FOREIGN_KEY; |
|
4565 |
if (!table->s->mysql_version || |
|
4566 |
(table->s->frm_version < FRM_VER_TRUE_VARCHAR && varchar)) |
|
4567 |
*alter_flags|= HA_ALTER_COLUMN_TYPE; |
|
4568 |
}
|
|
4569 |
/*
|
|
4570 |
Go through fields and check if the original ones are compatible
|
|
4571 |
with new table.
|
|
4572 |
*/
|
|
4573 |
for (f_ptr= table->field, new_field= new_field_it++; |
|
4574 |
(new_field && (field= *f_ptr)); |
|
4575 |
f_ptr++, new_field= new_field_it++) |
|
4576 |
{
|
|
4577 |
/* Make sure we have at least the default charset in use. */
|
|
4578 |
if (!new_field->charset) |
|
4579 |
new_field->charset= create_info->default_table_charset; |
|
4580 |
||
4581 |
/* Don't pack rows in old tables if the user has requested this. */
|
|
4582 |
if (create_info->row_type == ROW_TYPE_DYNAMIC || |
|
4583 |
(new_field->flags & BLOB_FLAG) || |
|
4584 |
(new_field->sql_type == MYSQL_TYPE_VARCHAR && create_info->row_type != ROW_TYPE_FIXED)) |
|
4585 |
create_info->table_options|= HA_OPTION_PACK_RECORD; |
|
4586 |
||
4587 |
/* Check how fields have been modified */
|
|
4588 |
if (alter_info->flags & ALTER_CHANGE_COLUMN) |
|
4589 |
{
|
|
4590 |
/* Evaluate changes bitmap and send to check_if_incompatible_data() */
|
|
4591 |
if (!(table_changes_local= field->is_equal(new_field))) |
|
4592 |
*alter_flags|= HA_ALTER_COLUMN_TYPE; |
|
4593 |
||
4594 |
/* Check if field was renamed */
|
|
4595 |
field->flags&= ~FIELD_IS_RENAMED; |
|
4596 |
if (my_strcasecmp(system_charset_info, |
|
4597 |
field->field_name, |
|
4598 |
new_field->field_name)) |
|
4599 |
{
|
|
4600 |
field->flags|= FIELD_IS_RENAMED; |
|
4601 |
*alter_flags|= HA_ALTER_COLUMN_NAME; |
|
4602 |
}
|
|
4603 |
||
4604 |
*table_changes&= table_changes_local; |
|
4605 |
if (table_changes_local == IS_EQUAL_PACK_LENGTH) |
|
4606 |
*alter_flags|= HA_ALTER_COLUMN_TYPE; |
|
4607 |
||
4608 |
/* Check that NULL behavior is same for old and new fields */
|
|
4609 |
if ((new_field->flags & NOT_NULL_FLAG) != |
|
4610 |
(uint) (field->flags & NOT_NULL_FLAG)) |
|
4611 |
{
|
|
4612 |
*table_changes= IS_EQUAL_NO; |
|
4613 |
*alter_flags|= HA_ALTER_COLUMN_NULLABLE; |
|
4614 |
}
|
|
4615 |
}
|
|
4616 |
||
4617 |
/* Clear indexed marker */
|
|
4618 |
field->flags&= ~FIELD_IN_ADD_INDEX; |
|
4619 |
}
|
|
4620 |
||
4621 |
/*
|
|
4622 |
Go through keys and check if the original ones are compatible
|
|
4623 |
with new table.
|
|
4624 |
*/
|
|
4625 |
KEY *table_key; |
|
4626 |
KEY *table_key_end= table->key_info + table->s->keys; |
|
4627 |
KEY *new_key; |
|
4628 |
KEY *new_key_end= |
|
4629 |
ha_alter_info->key_info_buffer + ha_alter_info->key_count; |
|
4630 |
||
4631 |
DBUG_PRINT("info", ("index count old: %d new: %d", |
|
4632 |
table->s->keys, ha_alter_info->key_count)); |
|
4633 |
/*
|
|
4634 |
Step through all keys of the old table and search matching new keys.
|
|
4635 |
*/
|
|
4636 |
ha_alter_info->index_drop_count= 0; |
|
4637 |
ha_alter_info->index_add_count= 0; |
|
4638 |
for (table_key= table->key_info; table_key < table_key_end; table_key++) |
|
4639 |
{
|
|
4640 |
KEY_PART_INFO *table_part; |
|
4641 |
KEY_PART_INFO *table_part_end= table_key->key_part + table_key->key_parts; |
|
4642 |
KEY_PART_INFO *new_part; |
|
4643 |
||
4644 |
/* Search a new key with the same name. */
|
|
4645 |
for (new_key= ha_alter_info->key_info_buffer; |
|
4646 |
new_key < new_key_end; |
|
4647 |
new_key++) |
|
4648 |
{
|
|
4649 |
if (! strcmp(table_key->name, new_key->name)) |
|
4650 |
break; |
|
4651 |
}
|
|
4652 |
if (new_key >= new_key_end) |
|
4653 |
{
|
|
4654 |
/* Key not found. Add the offset of the key to the drop buffer. */
|
|
4655 |
ha_alter_info->index_drop_buffer |
|
4656 |
[ha_alter_info->index_drop_count++]= |
|
4657 |
table_key - table->key_info; |
|
4658 |
if (table_key->flags & HA_NOSAME) |
|
4659 |
{
|
|
4660 |
/* Unique key. Check for "PRIMARY". */
|
|
4661 |
if (! my_strcasecmp(system_charset_info, |
|
4662 |
table_key->name, primary_key_name)) |
|
4663 |
*alter_flags|= HA_DROP_PK_INDEX; |
|
4664 |
else
|
|
4665 |
*alter_flags|= HA_DROP_UNIQUE_INDEX; |
|
4666 |
}
|
|
4667 |
else
|
|
4668 |
*alter_flags|= HA_DROP_INDEX; |
|
4669 |
*table_changes= IS_EQUAL_NO; |
|
4670 |
DBUG_PRINT("info", ("index dropped: '%s'", table_key->name)); |
|
4671 |
continue; |
|
4672 |
}
|
|
4673 |
||
4674 |
/* Check that the key types are compatible between old and new tables. */
|
|
4675 |
if ((table_key->algorithm != new_key->algorithm) || |
|
4676 |
((table_key->flags & HA_KEYFLAG_MASK) != |
|
4677 |
(new_key->flags & HA_KEYFLAG_MASK)) || |
|
4678 |
(table_key->key_parts != new_key->key_parts)) |
|
4679 |
{
|
|
4680 |
if (table_key->flags & HA_NOSAME) |
|
4681 |
{
|
|
4682 |
// Unique key. Check for "PRIMARY".
|
|
4683 |
if (! my_strcasecmp(system_charset_info, |
|
4684 |
table_key->name, primary_key_name)) |
|
4685 |
*alter_flags|= HA_ALTER_PK_INDEX; |
|
4686 |
else
|
|
4687 |
*alter_flags|= HA_ALTER_UNIQUE_INDEX; |
|
4688 |
}
|
|
4689 |
else
|
|
4690 |
*alter_flags|= HA_ALTER_INDEX; |
|
4691 |
goto index_changed; |
|
4692 |
}
|
|
4693 |
||
4694 |
/*
|
|
4695 |
Check that the key parts remain compatible between the old and
|
|
4696 |
new tables.
|
|
4697 |
*/
|
|
4698 |
for (table_part= table_key->key_part, new_part= new_key->key_part; |
|
4699 |
table_part < table_part_end; |
|
4700 |
table_part++, new_part++) |
|
4701 |
{
|
|
4702 |
/*
|
|
4703 |
Key definition has changed if we are using a different field or
|
|
4704 |
if the used key part length is different. We know that the fields
|
|
4705 |
did not change. Comparing field numbers is sufficient.
|
|
4706 |
*/
|
|
4707 |
if ((table_part->length != new_part->length) || |
|
4708 |
(table_part->fieldnr - 1 != new_part->fieldnr)) |
|
4709 |
{
|
|
4710 |
if (table_key->flags & HA_NOSAME) |
|
4711 |
{
|
|
4712 |
/* Unique key. Check for "PRIMARY" */
|
|
4713 |
if (! my_strcasecmp(system_charset_info, |
|
4714 |
table_key->name, primary_key_name)) |
|
4715 |
*alter_flags|= HA_ALTER_PK_INDEX; |
|
4716 |
else
|
|
4717 |
*alter_flags|= HA_ALTER_UNIQUE_INDEX; |
|
4718 |
}
|
|
4719 |
else
|
|
4720 |
*alter_flags|= HA_ALTER_INDEX; |
|
4721 |
goto index_changed; |
|
4722 |
}
|
|
4723 |
}
|
|
4724 |
continue; |
|
4725 |
||
4726 |
index_changed: |
|
4727 |
/* Key modified. Add the offset of the key to both buffers. */
|
|
4728 |
ha_alter_info->index_drop_buffer |
|
4729 |
[ha_alter_info->index_drop_count++]= |
|
4730 |
table_key - table->key_info; |
|
4731 |
ha_alter_info->index_add_buffer |
|
4732 |
[ha_alter_info->index_add_count++]= |
|
4733 |
new_key - ha_alter_info->key_info_buffer; |
|
4734 |
key_part= new_key->key_part; |
|
4735 |
end= key_part + new_key->key_parts; |
|
4736 |
for(; key_part != end; key_part++) |
|
4737 |
{
|
|
4738 |
/* Mark field to be part of new key */
|
|
4739 |
if ((field= table->field[key_part->fieldnr])) |
|
4740 |
field->flags|= FIELD_IN_ADD_INDEX; |
|
4741 |
}
|
|
4742 |
*table_changes= IS_EQUAL_NO; |
|
4743 |
DBUG_PRINT("info", ("index changed: '%s'", table_key->name)); |
|
4744 |
}
|
|
4745 |
/*end of for (; table_key < table_key_end;) */
|
|
4746 |
||
4747 |
/*
|
|
4748 |
Step through all keys of the new table and find matching old keys.
|
|
4749 |
*/
|
|
4750 |
for (new_key= ha_alter_info->key_info_buffer; |
|
4751 |
new_key < new_key_end; |
|
4752 |
new_key++) |
|
4753 |
{
|
|
4754 |
/* Search an old key with the same name. */
|
|
4755 |
for (table_key= table->key_info; table_key < table_key_end; table_key++) |
|
4756 |
{
|
|
4757 |
if (! strcmp(table_key->name, new_key->name)) |
|
4758 |
break; |
|
4759 |
}
|
|
4760 |
if (table_key >= table_key_end) |
|
4761 |
{
|
|
4762 |
/* Key not found. Add the offset of the key to the add buffer. */
|
|
4763 |
ha_alter_info->index_add_buffer |
|
4764 |
[ha_alter_info->index_add_count++]= |
|
4765 |
new_key - ha_alter_info->key_info_buffer; |
|
4766 |
key_part= new_key->key_part; |
|
4767 |
end= key_part + new_key->key_parts; |
|
4768 |
for(; key_part != end; key_part++) |
|
4769 |
{
|
|
4770 |
/* Mark field to be part of new key */
|
|
4771 |
if ((field= table->field[key_part->fieldnr])) |
|
4772 |
field->flags|= FIELD_IN_ADD_INDEX; |
|
4773 |
}
|
|
4774 |
if (new_key->flags & HA_NOSAME) |
|
4775 |
{
|
|
4776 |
/* Unique key. Check for "PRIMARY" */
|
|
4777 |
if (! my_strcasecmp(system_charset_info, |
|
4778 |
new_key->name, primary_key_name)) |
|
4779 |
*alter_flags|= HA_ADD_PK_INDEX; |
|
4780 |
else
|
|
4781 |
*alter_flags|= HA_ADD_UNIQUE_INDEX; |
|
4782 |
}
|
|
4783 |
else
|
|
4784 |
*alter_flags|= HA_ADD_INDEX; |
|
4785 |
*table_changes= IS_EQUAL_NO; |
|
4786 |
DBUG_PRINT("info", ("index added: '%s'", new_key->name)); |
|
4787 |
}
|
|
4788 |
}
|
|
4789 |
#ifndef DBUG_OFF
|
|
4790 |
{
|
|
4791 |
char dbug_string[HA_MAX_ALTER_FLAGS+1]; |
|
4792 |
alter_flags->print(dbug_string); |
|
4793 |
DBUG_PRINT("info", ("alter_flags: %s", (char *) dbug_string)); |
|
4794 |
}
|
|
4795 |
#endif
|
|
4796 |
||
4797 |
DBUG_RETURN(FALSE); |
|
4798 |
}
|
|
4799 |
||
4800 |
||
4801 |
/*
|
|
4802 |
Manages enabling/disabling of indexes for ALTER TABLE
|
|
4803 |
||
4804 |
SYNOPSIS
|
|
4805 |
alter_table_manage_keys()
|
|
4806 |
table Target table
|
|
4807 |
indexes_were_disabled Whether the indexes of the from table
|
|
4808 |
were disabled
|
|
4809 |
keys_onoff ENABLE | DISABLE | LEAVE_AS_IS
|
|
4810 |
||
4811 |
RETURN VALUES
|
|
4812 |
FALSE OK
|
|
4813 |
TRUE Error
|
|
4814 |
*/
|
|
4815 |
||
4816 |
static
|
|
4817 |
bool alter_table_manage_keys(TABLE *table, int indexes_were_disabled, |
|
4818 |
enum enum_enable_or_disable keys_onoff) |
|
4819 |
{
|
|
4820 |
int error= 0; |
|
4821 |
DBUG_ENTER("alter_table_manage_keys"); |
|
4822 |
DBUG_PRINT("enter", ("table=%p were_disabled=%d on_off=%d", |
|
4823 |
table, indexes_were_disabled, keys_onoff)); |
|
4824 |
||
4825 |
switch (keys_onoff) { |
|
4826 |
case ENABLE: |
|
4827 |
error= table->file->ha_enable_indexes(HA_KEY_SWITCH_NONUNIQ_SAVE); |
|
4828 |
break; |
|
4829 |
case LEAVE_AS_IS: |
|
4830 |
if (!indexes_were_disabled) |
|
4831 |
break; |
|
4832 |
/* fall-through: disabled indexes */
|
|
4833 |
case DISABLE: |
|
4834 |
error= table->file->ha_disable_indexes(HA_KEY_SWITCH_NONUNIQ_SAVE); |
|
4835 |
}
|
|
4836 |
||
4837 |
if (error == HA_ERR_WRONG_COMMAND) |
|
4838 |
{
|
|
4839 |
push_warning_printf(current_thd, MYSQL_ERROR::WARN_LEVEL_NOTE, |
|
4840 |
ER_ILLEGAL_HA, ER(ER_ILLEGAL_HA), |
|
4841 |
table->s->table_name.str); |
|
4842 |
error= 0; |
|
4843 |
} else if (error) |
|
4844 |
table->file->print_error(error, MYF(0)); |
|
4845 |
||
4846 |
DBUG_RETURN(error); |
|
4847 |
}
|
|
4848 |
||
4849 |
int create_temporary_table(THD *thd, |
|
4850 |
TABLE *table, |
|
4851 |
char *new_db, |
|
4852 |
char *tmp_name, |
|
4853 |
HA_CREATE_INFO *create_info, |
|
4854 |
Alter_info *alter_info, |
|
4855 |
bool db_changed) |
|
4856 |
{
|
|
4857 |
int error; |
|
4858 |
char index_file[FN_REFLEN], data_file[FN_REFLEN]; |
|
4859 |
handlerton *old_db_type, *new_db_type; |
|
4860 |
DBUG_ENTER("create_temporary_table"); |
|
4861 |
old_db_type= table->s->db_type(); |
|
4862 |
new_db_type= create_info->db_type; |
|
4863 |
/*
|
|
4864 |
Handling of symlinked tables:
|
|
4865 |
If no rename:
|
|
4866 |
Create new data file and index file on the same disk as the
|
|
4867 |
old data and index files.
|
|
4868 |
Copy data.
|
|
4869 |
Rename new data file over old data file and new index file over
|
|
4870 |
old index file.
|
|
4871 |
Symlinks are not changed.
|
|
4872 |
||
4873 |
If rename:
|
|
4874 |
Create new data file and index file on the same disk as the
|
|
4875 |
old data and index files. Create also symlinks to point at
|
|
4876 |
the new tables.
|
|
4877 |
Copy data.
|
|
4878 |
At end, rename intermediate tables, and symlinks to intermediate
|
|
4879 |
table, to final table name.
|
|
4880 |
Remove old table and old symlinks
|
|
4881 |
||
4882 |
If rename is made to another database:
|
|
4883 |
Create new tables in new database.
|
|
4884 |
Copy data.
|
|
4885 |
Remove old table and symlinks.
|
|
4886 |
*/
|
|
4887 |
if (db_changed) // Ignore symlink if db changed |
|
4888 |
{
|
|
4889 |
if (create_info->index_file_name) |
|
4890 |
{
|
|
4891 |
/* Fix index_file_name to have 'tmp_name' as basename */
|
|
4892 |
strmov(index_file, tmp_name); |
|
4893 |
create_info->index_file_name=fn_same(index_file, |
|
4894 |
create_info->index_file_name, |
|
4895 |
1); |
|
4896 |
}
|
|
4897 |
if (create_info->data_file_name) |
|
4898 |
{
|
|
4899 |
/* Fix data_file_name to have 'tmp_name' as basename */
|
|
4900 |
strmov(data_file, tmp_name); |
|
4901 |
create_info->data_file_name=fn_same(data_file, |
|
4902 |
create_info->data_file_name, |
|
4903 |
1); |
|
4904 |
}
|
|
4905 |
}
|
|
4906 |
else
|
|
4907 |
create_info->data_file_name=create_info->index_file_name=0; |
|
4908 |
||
4909 |
if (new_db_type == old_db_type) |
|
4910 |
{
|
|
4911 |
/*
|
|
4912 |
Table has not changed storage engine.
|
|
4913 |
If STORAGE and TABLESPACE have not been changed than copy them
|
|
4914 |
from the original table
|
|
4915 |
*/
|
|
4916 |
if (!create_info->tablespace && |
|
4917 |
table->s->tablespace && |
|
4918 |
create_info->default_storage_media == HA_SM_DEFAULT) |
|
4919 |
create_info->tablespace= table->s->tablespace; |
|
4920 |
if (create_info->default_storage_media == HA_SM_DEFAULT) |
|
4921 |
create_info->default_storage_media= table->s->default_storage_media; |
|
4922 |
}
|
|
4923 |
||
4924 |
/*
|
|
4925 |
Create a table with a temporary name.
|
|
4926 |
With create_info->frm_only == 1 this creates a .frm file only.
|
|
4927 |
We don't log the statement, it will be logged later.
|
|
4928 |
*/
|
|
4929 |
tmp_disable_binlog(thd); |
|
4930 |
error= mysql_create_table(thd, new_db, tmp_name, |
|
4931 |
create_info, alter_info, 1, 0); |
|
4932 |
reenable_binlog(thd); |
|
4933 |
||
4934 |
DBUG_RETURN(error); |
|
4935 |
}
|
|
4936 |
||
4937 |
/*
|
|
4938 |
Create a temporary table that reflects what an alter table operation
|
|
4939 |
will accomplish.
|
|
4940 |
||
4941 |
SYNOPSIS
|
|
4942 |
create_altered_table()
|
|
4943 |
thd Thread handle
|
|
4944 |
table The original table
|
|
4945 |
create_info Information from the parsing phase about new
|
|
4946 |
table properties.
|
|
4947 |
alter_info Lists of fields, keys to be changed, added
|
|
4948 |
or dropped.
|
|
4949 |
db_change Specifies if the table is moved to another database
|
|
4950 |
RETURN
|
|
4951 |
A temporary table with all changes
|
|
4952 |
NULL if error
|
|
4953 |
NOTES
|
|
4954 |
The temporary table is created without storing it in any storage engine
|
|
4955 |
and is opened only to get the table struct and frm file reference.
|
|
4956 |
*/
|
|
4957 |
TABLE *create_altered_table(THD *thd, |
|
4958 |
TABLE *table, |
|
4959 |
char *new_db, |
|
4960 |
HA_CREATE_INFO *create_info, |
|
4961 |
Alter_info *alter_info, |
|
4962 |
bool db_change) |
|
4963 |
{
|
|
4964 |
int error; |
|
4965 |
HA_CREATE_INFO altered_create_info(*create_info); |
|
4966 |
TABLE *altered_table; |
|
4967 |
char tmp_name[80]; |
|
4968 |
char path[FN_REFLEN]; |
|
4969 |
DBUG_ENTER("create_altered_table"); |
|
4970 |
||
4971 |
my_snprintf(tmp_name, sizeof(tmp_name), "%s-%lx_%lx", |
|
4972 |
tmp_file_prefix, current_pid, thd->thread_id); |
|
4973 |
/* Safety fix for InnoDB */
|
|
4974 |
if (lower_case_table_names) |
|
4975 |
my_casedn_str(files_charset_info, tmp_name); |
|
4976 |
altered_create_info.options&= ~HA_LEX_CREATE_TMP_TABLE; |
|
4977 |
altered_create_info.frm_only= 1; |
|
4978 |
if ((error= create_temporary_table(thd, table, new_db, tmp_name, |
|
4979 |
&altered_create_info, |
|
4980 |
alter_info, db_change))) |
|
4981 |
{
|
|
4982 |
DBUG_PRINT("info", ("Error %u while creating temporary table", error)); |
|
4983 |
DBUG_RETURN(NULL); |
|
4984 |
};
|
|
4985 |
||
4986 |
build_table_filename(path, sizeof(path), new_db, tmp_name, "", |
|
4987 |
FN_IS_TMP); |
|
4988 |
altered_table= open_temporary_table(thd, path, new_db, tmp_name, 1, |
|
4989 |
OTM_ALTER); |
|
4990 |
DBUG_RETURN(altered_table); |
|
4991 |
||
4992 |
DBUG_RETURN(NULL); |
|
4993 |
}
|
|
4994 |
||
4995 |
||
4996 |
/*
|
|
4997 |
Perform a fast or on-line alter table
|
|
4998 |
||
4999 |
SYNOPSIS
|
|
5000 |
mysql_fast_or_online_alter_table()
|
|
5001 |
thd Thread handle
|
|
5002 |
table The original table
|
|
5003 |
altered_table A temporary table showing how we will change table
|
|
5004 |
create_info Information from the parsing phase about new
|
|
5005 |
table properties.
|
|
5006 |
alter_info Storage place for data used during different phases
|
|
5007 |
ha_alter_flags Bitmask that shows what will be changed
|
|
5008 |
keys_onoff Specifies if keys are to be enabled/disabled
|
|
5009 |
RETURN
|
|
5010 |
0 OK
|
|
5011 |
>0 An error occured during the on-line alter table operation
|
|
5012 |
-1 Error when re-opening table
|
|
5013 |
NOTES
|
|
5014 |
If mysql_alter_table does not need to copy the table, it is
|
|
5015 |
either a fast alter table where the storage engine does not
|
|
5016 |
need to know about the change, only the frm will change,
|
|
5017 |
or the storage engine supports performing the alter table
|
|
5018 |
operation directly, on-line without mysql having to copy
|
|
5019 |
the table.
|
|
5020 |
*/
|
|
5021 |
int mysql_fast_or_online_alter_table(THD *thd, |
|
5022 |
TABLE *table, |
|
5023 |
TABLE *altered_table, |
|
5024 |
HA_CREATE_INFO *create_info, |
|
5025 |
HA_ALTER_INFO *alter_info, |
|
5026 |
HA_ALTER_FLAGS *ha_alter_flags, |
|
5027 |
enum enum_enable_or_disable keys_onoff) |
|
5028 |
{
|
|
5029 |
int error= 0; |
|
5030 |
bool online= (table->file->ha_table_flags() & HA_ONLINE_ALTER)?true:false; |
|
5031 |
TABLE *t_table; |
|
5032 |
||
5033 |
DBUG_ENTER(" mysql_fast_or_online_alter_table"); |
|
5034 |
if (online) |
|
5035 |
{
|
|
5036 |
/*
|
|
5037 |
Tell the handler to prepare for the online alter
|
|
5038 |
*/
|
|
5039 |
if ((error= table->file->alter_table_phase1(thd, |
|
5040 |
altered_table, |
|
5041 |
create_info, |
|
5042 |
alter_info, |
|
5043 |
ha_alter_flags))) |
|
5044 |
{
|
|
5045 |
goto err; |
|
5046 |
}
|
|
5047 |
||
5048 |
/*
|
|
5049 |
Tell the storage engine to perform the online alter table
|
|
5050 |
TODO:
|
|
5051 |
if check_if_supported_alter() returned HA_ALTER_SUPPORTED_WAIT_LOCK
|
|
5052 |
we need to wrap the next call with a DDL lock.
|
|
5053 |
*/
|
|
5054 |
if ((error= table->file->alter_table_phase2(thd, |
|
5055 |
altered_table, |
|
5056 |
create_info, |
|
5057 |
alter_info, |
|
5058 |
ha_alter_flags))) |
|
5059 |
{
|
|
5060 |
goto err; |
|
5061 |
}
|
|
5062 |
}
|
|
5063 |
/*
|
|
5064 |
The final .frm file is already created as a temporary file
|
|
5065 |
and will be renamed to the original table name.
|
|
5066 |
*/
|
|
5067 |
VOID(pthread_mutex_lock(&LOCK_open)); |
|
5068 |
wait_while_table_is_used(thd, table, HA_EXTRA_FORCE_REOPEN); |
|
5069 |
alter_table_manage_keys(table, table->file->indexes_are_disabled(), |
|
5070 |
keys_onoff); |
|
5071 |
close_data_files_and_morph_locks(thd, |
|
5072 |
table->pos_in_table_list->db, |
|
5073 |
table->pos_in_table_list->table_name); |
|
5074 |
if (mysql_rename_table(NULL, |
|
5075 |
altered_table->s->db.str, |
|
5076 |
altered_table->s->table_name.str, |
|
5077 |
table->s->db.str, |
|
5078 |
table->s->table_name.str, FN_FROM_IS_TMP)) |
|
5079 |
{
|
|
5080 |
error= 1; |
|
5081 |
VOID(pthread_mutex_unlock(&LOCK_open)); |
|
5082 |
goto err; |
|
5083 |
}
|
|
5084 |
broadcast_refresh(); |
|
5085 |
VOID(pthread_mutex_unlock(&LOCK_open)); |
|
5086 |
||
5087 |
/*
|
|
5088 |
The ALTER TABLE is always in its own transaction.
|
|
5089 |
Commit must not be called while LOCK_open is locked. It could call
|
|
5090 |
wait_if_global_read_lock(), which could create a deadlock if called
|
|
5091 |
with LOCK_open.
|
|
5092 |
*/
|
|
5093 |
error= ha_autocommit_or_rollback(thd, 0); |
|
5094 |
||
5095 |
if (ha_commit(thd)) |
|
5096 |
error=1; |
|
5097 |
if (error) |
|
5098 |
goto err; |
|
5099 |
if (online) |
|
5100 |
{
|
|
5101 |
VOID(pthread_mutex_lock(&LOCK_open)); |
|
5102 |
if (reopen_table(table)) |
|
5103 |
{
|
|
5104 |
error= -1; |
|
5105 |
goto err; |
|
5106 |
}
|
|
5107 |
VOID(pthread_mutex_unlock(&LOCK_open)); |
|
5108 |
t_table= table; |
|
5109 |
||
5110 |
/*
|
|
5111 |
Tell the handler that the changed frm is on disk and table
|
|
5112 |
has been re-opened
|
|
5113 |
*/
|
|
5114 |
if ((error= t_table->file->alter_table_phase3(thd, t_table))) |
|
5115 |
{
|
|
5116 |
goto err; |
|
5117 |
}
|
|
5118 |
||
5119 |
/*
|
|
5120 |
We are going to reopen table down on the road, so we have to restore
|
|
5121 |
state of the TABLE object which we used for obtaining of handler
|
|
5122 |
object to make it suitable for reopening.
|
|
5123 |
*/
|
|
5124 |
DBUG_ASSERT(t_table == table); |
|
5125 |
table->open_placeholder= 1; |
|
5126 |
VOID(pthread_mutex_lock(&LOCK_open)); |
|
5127 |
close_handle_and_leave_table_as_lock(table); |
|
5128 |
VOID(pthread_mutex_unlock(&LOCK_open)); |
|
5129 |
}
|
|
5130 |
||
5131 |
err: |
|
5132 |
if (error) |
|
5133 |
DBUG_PRINT("info", ("Got error %u", error)); |
|
5134 |
DBUG_RETURN(error); |
|
5135 |
}
|
|
5136 |
||
5137 |
||
5138 |
/**
|
|
5139 |
Prepare column and key definitions for CREATE TABLE in ALTER TABLE.
|
|
5140 |
||
5141 |
This function transforms parse output of ALTER TABLE - lists of
|
|
5142 |
columns and keys to add, drop or modify into, essentially,
|
|
5143 |
CREATE TABLE definition - a list of columns and keys of the new
|
|
5144 |
table. While doing so, it also performs some (bug not all)
|
|
5145 |
semantic checks.
|
|
5146 |
||
5147 |
This function is invoked when we know that we're going to
|
|
5148 |
perform ALTER TABLE via a temporary table -- i.e. fast ALTER TABLE
|
|
5149 |
is not possible, perhaps because the ALTER statement contains
|
|
5150 |
instructions that require change in table data, not only in
|
|
5151 |
table definition or indexes.
|
|
5152 |
||
5153 |
@param[in,out] thd thread handle. Used as a memory pool
|
|
5154 |
and source of environment information.
|
|
5155 |
@param[in] table the source table, open and locked
|
|
5156 |
Used as an interface to the storage engine
|
|
5157 |
to acquire additional information about
|
|
5158 |
the original table.
|
|
5159 |
@param[in,out] create_info A blob with CREATE/ALTER TABLE
|
|
5160 |
parameters
|
|
5161 |
@param[in,out] alter_info Another blob with ALTER/CREATE parameters.
|
|
5162 |
Originally create_info was used only in
|
|
5163 |
CREATE TABLE and alter_info only in ALTER TABLE.
|
|
5164 |
But since ALTER might end-up doing CREATE,
|
|
5165 |
this distinction is gone and we just carry
|
|
5166 |
around two structures.
|
|
5167 |
||
5168 |
@return
|
|
5169 |
Fills various create_info members based on information retrieved
|
|
5170 |
from the storage engine.
|
|
5171 |
Sets create_info->varchar if the table has a VARCHAR column.
|
|
5172 |
Prepares alter_info->create_list and alter_info->key_list with
|
|
5173 |
columns and keys of the new table.
|
|
5174 |
@retval TRUE error, out of memory or a semantical error in ALTER
|
|
5175 |
TABLE instructions
|
|
5176 |
@retval FALSE success
|
|
5177 |
*/
|
|
5178 |
||
5179 |
static bool |
|
5180 |
mysql_prepare_alter_table(THD *thd, TABLE *table, |
|
5181 |
HA_CREATE_INFO *create_info, |
|
5182 |
Alter_info *alter_info) |
|
5183 |
{
|
|
5184 |
/* New column definitions are added here */
|
|
5185 |
List<Create_field> new_create_list; |
|
5186 |
/* New key definitions are added here */
|
|
5187 |
List<Key> new_key_list; |
|
5188 |
List_iterator<Alter_drop> drop_it(alter_info->drop_list); |
|
5189 |
List_iterator<Create_field> def_it(alter_info->create_list); |
|
5190 |
List_iterator<Alter_column> alter_it(alter_info->alter_list); |
|
5191 |
List_iterator<Key> key_it(alter_info->key_list); |
|
5192 |
List_iterator<Create_field> find_it(new_create_list); |
|
5193 |
List_iterator<Create_field> field_it(new_create_list); |
|
5194 |
List<Key_part_spec> key_parts; |
|
5195 |
uint db_create_options= (table->s->db_create_options |
|
5196 |
& ~(HA_OPTION_PACK_RECORD)); |
|
5197 |
uint used_fields= create_info->used_fields; |
|
5198 |
KEY *key_info=table->key_info; |
|
5199 |
bool rc= TRUE; |
|
5200 |
||
5201 |
DBUG_ENTER("mysql_prepare_alter_table"); |
|
5202 |
||
5203 |
create_info->varchar= FALSE; |
|
5204 |
/* Let new create options override the old ones */
|
|
5205 |
if (!(used_fields & HA_CREATE_USED_MIN_ROWS)) |
|
5206 |
create_info->min_rows= table->s->min_rows; |
|
5207 |
if (!(used_fields & HA_CREATE_USED_MAX_ROWS)) |
|
5208 |
create_info->max_rows= table->s->max_rows; |
|
5209 |
if (!(used_fields & HA_CREATE_USED_AVG_ROW_LENGTH)) |
|
5210 |
create_info->avg_row_length= table->s->avg_row_length; |
|
5211 |
if (!(used_fields & HA_CREATE_USED_DEFAULT_CHARSET)) |
|
5212 |
create_info->default_table_charset= table->s->table_charset; |
|
5213 |
if (!(used_fields & HA_CREATE_USED_AUTO) && table->found_next_number_field) |
|
5214 |
{
|
|
5215 |
/* Table has an autoincrement, copy value to new table */
|
|
5216 |
table->file->info(HA_STATUS_AUTO); |
|
5217 |
create_info->auto_increment_value= table->file->stats.auto_increment_value; |
|
5218 |
}
|
|
5219 |
if (!(used_fields & HA_CREATE_USED_KEY_BLOCK_SIZE)) |
|
5220 |
create_info->key_block_size= table->s->key_block_size; |
|
5221 |
if (!(used_fields & HA_CREATE_USED_TRANSACTIONAL)) |
|
5222 |
create_info->transactional= table->s->transactional; |
|
5223 |
||
5224 |
restore_record(table, s->default_values); // Empty record for DEFAULT |
|
5225 |
Create_field *def; |
|
5226 |
||
5227 |
/*
|
|
5228 |
First collect all fields from table which isn't in drop_list
|
|
5229 |
*/
|
|
5230 |
Field **f_ptr,*field; |
|
5231 |
for (f_ptr=table->field ; (field= *f_ptr) ; f_ptr++) |
|
5232 |
{
|
|
5233 |
if (field->type() == MYSQL_TYPE_STRING) |
|
5234 |
create_info->varchar= TRUE; |
|
5235 |
/* Check if field should be dropped */
|
|
5236 |
Alter_drop *drop; |
|
5237 |
drop_it.rewind(); |
|
5238 |
while ((drop=drop_it++)) |
|
5239 |
{
|
|
5240 |
if (drop->type == Alter_drop::COLUMN && |
|
5241 |
!my_strcasecmp(system_charset_info,field->field_name, drop->name)) |
|
5242 |
{
|
|
5243 |
/* Reset auto_increment value if it was dropped */
|
|
5244 |
if (MTYP_TYPENR(field->unireg_check) == Field::NEXT_NUMBER && |
|
5245 |
!(used_fields & HA_CREATE_USED_AUTO)) |
|
5246 |
{
|
|
5247 |
create_info->auto_increment_value=0; |
|
5248 |
create_info->used_fields|=HA_CREATE_USED_AUTO; |
|
5249 |
}
|
|
5250 |
break; |
|
5251 |
}
|
|
5252 |
}
|
|
5253 |
if (drop) |
|
5254 |
{
|
|
5255 |
drop_it.remove(); |
|
5256 |
continue; |
|
5257 |
}
|
|
5258 |
/* Check if field is changed */
|
|
5259 |
def_it.rewind(); |
|
5260 |
while ((def=def_it++)) |
|
5261 |
{
|
|
5262 |
if (def->change && |
|
5263 |
!my_strcasecmp(system_charset_info,field->field_name, def->change)) |
|
5264 |
break; |
|
5265 |
}
|
|
5266 |
if (def) |
|
5267 |
{ // Field is changed |
|
5268 |
def->field=field; |
|
5269 |
if (!def->after) |
|
5270 |
{
|
|
5271 |
new_create_list.push_back(def); |
|
5272 |
def_it.remove(); |
|
5273 |
}
|
|
5274 |
}
|
|
5275 |
else
|
|
5276 |
{
|
|
5277 |
/*
|
|
5278 |
This field was not dropped and not changed, add it to the list
|
|
5279 |
for the new table.
|
|
5280 |
*/
|
|
5281 |
def= new Create_field(field, field); |
|
5282 |
new_create_list.push_back(def); |
|
5283 |
alter_it.rewind(); // Change default if ALTER |
|
5284 |
Alter_column *alter; |
|
5285 |
while ((alter=alter_it++)) |
|
5286 |
{
|
|
5287 |
if (!my_strcasecmp(system_charset_info,field->field_name, alter->name)) |
|
5288 |
break; |
|
5289 |
}
|
|
5290 |
if (alter) |
|
5291 |
{
|
|
5292 |
if (def->sql_type == MYSQL_TYPE_BLOB) |
|
5293 |
{
|
|
5294 |
my_error(ER_BLOB_CANT_HAVE_DEFAULT, MYF(0), def->change); |
|
5295 |
goto err; |
|
5296 |
}
|
|
5297 |
if ((def->def=alter->def)) // Use new default |
|
5298 |
def->flags&= ~NO_DEFAULT_VALUE_FLAG; |
|
5299 |
else
|
|
5300 |
def->flags|= NO_DEFAULT_VALUE_FLAG; |
|
5301 |
alter_it.remove(); |
|
5302 |
}
|
|
5303 |
}
|
|
5304 |
}
|
|
5305 |
def_it.rewind(); |
|
5306 |
while ((def=def_it++)) // Add new columns |
|
5307 |
{
|
|
5308 |
if (def->change && ! def->field) |
|
5309 |
{
|
|
5310 |
my_error(ER_BAD_FIELD_ERROR, MYF(0), def->change, table->s->table_name.str); |
|
5311 |
goto err; |
|
5312 |
}
|
|
5313 |
/*
|
|
5314 |
Check that the DATE/DATETIME not null field we are going to add is
|
|
5315 |
either has a default value or the '0000-00-00' is allowed by the
|
|
5316 |
set sql mode.
|
|
5317 |
If the '0000-00-00' value isn't allowed then raise the error_if_not_empty
|
|
5318 |
flag to allow ALTER TABLE only if the table to be altered is empty.
|
|
5319 |
*/
|
|
5320 |
if ((def->sql_type == MYSQL_TYPE_DATE || |
|
5321 |
def->sql_type == MYSQL_TYPE_NEWDATE || |
|
5322 |
def->sql_type == MYSQL_TYPE_DATETIME) && |
|
5323 |
!alter_info->datetime_field && |
|
5324 |
!(~def->flags & (NO_DEFAULT_VALUE_FLAG | NOT_NULL_FLAG)) && |
|
5325 |
thd->variables.sql_mode & MODE_NO_ZERO_DATE) |
|
5326 |
{
|
|
5327 |
alter_info->datetime_field= def; |
|
5328 |
alter_info->error_if_not_empty= TRUE; |
|
5329 |
}
|
|
5330 |
if (!def->after) |
|
5331 |
new_create_list.push_back(def); |
|
5332 |
else if (def->after == first_keyword) |
|
5333 |
new_create_list.push_front(def); |
|
5334 |
else
|
|
5335 |
{
|
|
5336 |
Create_field *find; |
|
5337 |
find_it.rewind(); |
|
5338 |
while ((find=find_it++)) // Add new columns |
|
5339 |
{
|
|
5340 |
if (!my_strcasecmp(system_charset_info,def->after, find->field_name)) |
|
5341 |
break; |
|
5342 |
}
|
|
5343 |
if (!find) |
|
5344 |
{
|
|
5345 |
my_error(ER_BAD_FIELD_ERROR, MYF(0), def->after, table->s->table_name.str); |
|
5346 |
goto err; |
|
5347 |
}
|
|
5348 |
find_it.after(def); // Put element after this |
|
5349 |
/*
|
|
5350 |
XXX: hack for Bug#28427.
|
|
5351 |
If column order has changed, force OFFLINE ALTER TABLE
|
|
5352 |
without querying engine capabilities. If we ever have an
|
|
5353 |
engine that supports online ALTER TABLE CHANGE COLUMN
|
|
5354 |
<name> AFTER <name1> (Falcon?), this fix will effectively
|
|
5355 |
disable the capability.
|
|
5356 |
TODO: detect the situation in compare_tables, behave based
|
|
5357 |
on engine capabilities.
|
|
5358 |
*/
|
|
5359 |
if (alter_info->build_method == HA_BUILD_ONLINE) |
|
5360 |
{
|
|
5361 |
my_error(ER_NOT_SUPPORTED_YET, MYF(0), thd->query); |
|
5362 |
goto err; |
|
5363 |
}
|
|
5364 |
alter_info->build_method= HA_BUILD_OFFLINE; |
|
5365 |
}
|
|
5366 |
}
|
|
5367 |
if (alter_info->alter_list.elements) |
|
5368 |
{
|
|
5369 |
my_error(ER_BAD_FIELD_ERROR, MYF(0), |
|
5370 |
alter_info->alter_list.head()->name, table->s->table_name.str); |
|
5371 |
goto err; |
|
5372 |
}
|
|
5373 |
if (!new_create_list.elements) |
|
5374 |
{
|
|
5375 |
my_message(ER_CANT_REMOVE_ALL_FIELDS, ER(ER_CANT_REMOVE_ALL_FIELDS), |
|
5376 |
MYF(0)); |
|
5377 |
goto err; |
|
5378 |
}
|
|
5379 |
||
5380 |
/*
|
|
5381 |
Collect all keys which isn't in drop list. Add only those
|
|
5382 |
for which some fields exists.
|
|
5383 |
*/
|
|
5384 |
||
5385 |
for (uint i=0 ; i < table->s->keys ; i++,key_info++) |
|
5386 |
{
|
|
5387 |
char *key_name= key_info->name; |
|
5388 |
Alter_drop *drop; |
|
5389 |
drop_it.rewind(); |
|
5390 |
while ((drop=drop_it++)) |
|
5391 |
{
|
|
5392 |
if (drop->type == Alter_drop::KEY && |
|
5393 |
!my_strcasecmp(system_charset_info,key_name, drop->name)) |
|
5394 |
break; |
|
5395 |
}
|
|
5396 |
if (drop) |
|
5397 |
{
|
|
5398 |
drop_it.remove(); |
|
5399 |
continue; |
|
5400 |
}
|
|
5401 |
||
5402 |
KEY_PART_INFO *key_part= key_info->key_part; |
|
5403 |
key_parts.empty(); |
|
5404 |
for (uint j=0 ; j < key_info->key_parts ; j++,key_part++) |
|
5405 |
{
|
|
5406 |
if (!key_part->field) |
|
5407 |
continue; // Wrong field (from UNIREG) |
|
5408 |
const char *key_part_name=key_part->field->field_name; |
|
5409 |
Create_field *cfield; |
|
5410 |
field_it.rewind(); |
|
5411 |
while ((cfield=field_it++)) |
|
5412 |
{
|
|
5413 |
if (cfield->change) |
|
5414 |
{
|
|
5415 |
if (!my_strcasecmp(system_charset_info, key_part_name, |
|
5416 |
cfield->change)) |
|
5417 |
break; |
|
5418 |
}
|
|
5419 |
else if (!my_strcasecmp(system_charset_info, |
|
5420 |
key_part_name, cfield->field_name)) |
|
5421 |
break; |
|
5422 |
}
|
|
5423 |
if (!cfield) |
|
5424 |
continue; // Field is removed |
|
5425 |
uint key_part_length=key_part->length; |
|
5426 |
if (cfield->field) // Not new field |
|
5427 |
{
|
|
5428 |
/*
|
|
5429 |
If the field can't have only a part used in a key according to its
|
|
5430 |
new type, or should not be used partially according to its
|
|
5431 |
previous type, or the field length is less than the key part
|
|
5432 |
length, unset the key part length.
|
|
5433 |
||
5434 |
We also unset the key part length if it is the same as the
|
|
5435 |
old field's length, so the whole new field will be used.
|
|
5436 |
||
5437 |
BLOBs may have cfield->length == 0, which is why we test it before
|
|
5438 |
checking whether cfield->length < key_part_length (in chars).
|
|
5439 |
*/
|
|
5440 |
if (!Field::type_can_have_key_part(cfield->field->type()) || |
|
5441 |
!Field::type_can_have_key_part(cfield->sql_type) || |
|
5442 |
(cfield->field->field_length == key_part_length && |
|
5443 |
!f_is_blob(key_part->key_type)) || |
|
5444 |
(cfield->length && (cfield->length < key_part_length / |
|
5445 |
key_part->field->charset()->mbmaxlen))) |
|
5446 |
key_part_length= 0; // Use whole field |
|
5447 |
}
|
|
5448 |
key_part_length /= key_part->field->charset()->mbmaxlen; |
|
5449 |
key_parts.push_back(new Key_part_spec(cfield->field_name, |
|
5450 |
strlen(cfield->field_name), |
|
5451 |
key_part_length)); |
|
5452 |
}
|
|
5453 |
if (key_parts.elements) |
|
5454 |
{
|
|
5455 |
KEY_CREATE_INFO key_create_info; |
|
5456 |
Key *key; |
|
5457 |
enum Key::Keytype key_type; |
|
5458 |
bzero((char*) &key_create_info, sizeof(key_create_info)); |
|
5459 |
||
5460 |
key_create_info.algorithm= key_info->algorithm; |
|
5461 |
if (key_info->flags & HA_USES_BLOCK_SIZE) |
|
5462 |
key_create_info.block_size= key_info->block_size; |
|
5463 |
if (key_info->flags & HA_USES_COMMENT) |
|
5464 |
key_create_info.comment= key_info->comment; |
|
5465 |
||
5466 |
if (key_info->flags & HA_NOSAME) |
|
5467 |
{
|
|
5468 |
if (! my_strcasecmp(system_charset_info, key_name, primary_key_name)) |
|
5469 |
key_type= Key::PRIMARY; |
|
5470 |
else
|
|
5471 |
key_type= Key::UNIQUE; |
|
5472 |
}
|
|
5473 |
else
|
|
5474 |
key_type= Key::MULTIPLE; |
|
5475 |
||
5476 |
key= new Key(key_type, key_name, strlen(key_name), |
|
5477 |
&key_create_info, |
|
5478 |
test(key_info->flags & HA_GENERATED_KEY), |
|
5479 |
key_parts); |
|
5480 |
new_key_list.push_back(key); |
|
5481 |
}
|
|
5482 |
}
|
|
5483 |
{
|
|
5484 |
Key *key; |
|
5485 |
while ((key=key_it++)) // Add new keys |
|
5486 |
{
|
|
5487 |
if (key->type != Key::FOREIGN_KEY) |
|
5488 |
new_key_list.push_back(key); |
|
5489 |
if (key->name.str && |
|
5490 |
!my_strcasecmp(system_charset_info, key->name.str, primary_key_name)) |
|
5491 |
{
|
|
5492 |
my_error(ER_WRONG_NAME_FOR_INDEX, MYF(0), key->name.str); |
|
5493 |
goto err; |
|
5494 |
}
|
|
5495 |
}
|
|
5496 |
}
|
|
5497 |
||
5498 |
if (alter_info->drop_list.elements) |
|
5499 |
{
|
|
5500 |
my_error(ER_CANT_DROP_FIELD_OR_KEY, MYF(0), |
|
5501 |
alter_info->drop_list.head()->name); |
|
5502 |
goto err; |
|
5503 |
}
|
|
5504 |
if (alter_info->alter_list.elements) |
|
5505 |
{
|
|
5506 |
my_error(ER_CANT_DROP_FIELD_OR_KEY, MYF(0), |
|
5507 |
alter_info->alter_list.head()->name); |
|
5508 |
goto err; |
|
5509 |
}
|
|
5510 |
||
5511 |
if (!create_info->comment.str) |
|
5512 |
{
|
|
5513 |
create_info->comment.str= table->s->comment.str; |
|
5514 |
create_info->comment.length= table->s->comment.length; |
|
5515 |
}
|
|
5516 |
||
5517 |
table->file->update_create_info(create_info); |
|
5518 |
if ((create_info->table_options & |
|
5519 |
(HA_OPTION_PACK_KEYS | HA_OPTION_NO_PACK_KEYS)) || |
|
5520 |
(used_fields & HA_CREATE_USED_PACK_KEYS)) |
|
5521 |
db_create_options&= ~(HA_OPTION_PACK_KEYS | HA_OPTION_NO_PACK_KEYS); |
|
5522 |
if (create_info->table_options & |
|
5523 |
(HA_OPTION_CHECKSUM | HA_OPTION_NO_CHECKSUM)) |
|
5524 |
db_create_options&= ~(HA_OPTION_CHECKSUM | HA_OPTION_NO_CHECKSUM); |
|
5525 |
if (create_info->table_options & |
|
5526 |
(HA_OPTION_DELAY_KEY_WRITE | HA_OPTION_NO_DELAY_KEY_WRITE)) |
|
5527 |
db_create_options&= ~(HA_OPTION_DELAY_KEY_WRITE | |
|
5528 |
HA_OPTION_NO_DELAY_KEY_WRITE); |
|
5529 |
create_info->table_options|= db_create_options; |
|
5530 |
||
5531 |
if (table->s->tmp_table) |
|
5532 |
create_info->options|=HA_LEX_CREATE_TMP_TABLE; |
|
5533 |
||
5534 |
rc= FALSE; |
|
5535 |
alter_info->create_list.swap(new_create_list); |
|
5536 |
alter_info->key_list.swap(new_key_list); |
|
5537 |
err: |
|
5538 |
DBUG_RETURN(rc); |
|
5539 |
}
|
|
5540 |
||
5541 |
||
5542 |
/*
|
|
5543 |
Alter table
|
|
5544 |
||
5545 |
SYNOPSIS
|
|
5546 |
mysql_alter_table()
|
|
5547 |
thd Thread handle
|
|
5548 |
new_db If there is a RENAME clause
|
|
5549 |
new_name If there is a RENAME clause
|
|
5550 |
create_info Information from the parsing phase about new
|
|
5551 |
table properties.
|
|
5552 |
table_list The table to change.
|
|
5553 |
alter_info Lists of fields, keys to be changed, added
|
|
5554 |
or dropped.
|
|
5555 |
order_num How many ORDER BY fields has been specified.
|
|
5556 |
order List of fields to ORDER BY.
|
|
5557 |
ignore Whether we have ALTER IGNORE TABLE
|
|
5558 |
||
5559 |
DESCRIPTION
|
|
5560 |
This is a veery long function and is everything but the kitchen sink :)
|
|
5561 |
It is used to alter a table and not only by ALTER TABLE but also
|
|
5562 |
CREATE|DROP INDEX are mapped on this function.
|
|
5563 |
||
5564 |
When the ALTER TABLE statement just does a RENAME or ENABLE|DISABLE KEYS,
|
|
5565 |
or both, then this function short cuts its operation by renaming
|
|
5566 |
the table and/or enabling/disabling the keys. In this case, the FRM is
|
|
5567 |
not changed, directly by mysql_alter_table. However, if there is a
|
|
5568 |
RENAME + change of a field, or an index, the short cut is not used.
|
|
5569 |
See how `create_list` is used to generate the new FRM regarding the
|
|
5570 |
structure of the fields. The same is done for the indices of the table.
|
|
5571 |
||
5572 |
Important is the fact, that this function tries to do as little work as
|
|
5573 |
possible, by finding out whether a intermediate table is needed to copy
|
|
5574 |
data into and when finishing the altering to use it as the original table.
|
|
5575 |
For this reason the function compare_tables() is called, which decides
|
|
5576 |
based on all kind of data how similar are the new and the original
|
|
5577 |
tables.
|
|
5578 |
||
5579 |
RETURN VALUES
|
|
5580 |
FALSE OK
|
|
5581 |
TRUE Error
|
|
5582 |
*/
|
|
5583 |
||
5584 |
bool mysql_alter_table(THD *thd,char *new_db, char *new_name, |
|
5585 |
HA_CREATE_INFO *create_info, |
|
5586 |
TABLE_LIST *table_list, |
|
5587 |
Alter_info *alter_info, |
|
5588 |
uint order_num, ORDER *order, bool ignore) |
|
5589 |
{
|
|
5590 |
TABLE *table, *new_table=0, *name_lock= 0;; |
|
5591 |
int error= 0; |
|
5592 |
char tmp_name[80],old_name[32],new_name_buff[FN_REFLEN]; |
|
5593 |
char new_alias_buff[FN_REFLEN], *table_name, *db, *new_alias, *alias; |
|
5594 |
char path[FN_REFLEN]; |
|
5595 |
ha_rows copied= 0,deleted= 0; |
|
5596 |
handlerton *old_db_type, *new_db_type, *save_old_db_type; |
|
5597 |
legacy_db_type table_type; |
|
5598 |
frm_type_enum frm_type; |
|
5599 |
DBUG_ENTER("mysql_alter_table"); |
|
5600 |
||
5601 |
if (table_list && table_list->schema_table) |
|
5602 |
{
|
|
5603 |
my_error(ER_DBACCESS_DENIED_ERROR, MYF(0), "", "", INFORMATION_SCHEMA_NAME.str); |
|
5604 |
DBUG_RETURN(TRUE); |
|
5605 |
}
|
|
5606 |
||
5607 |
/*
|
|
5608 |
Assign variables table_name, new_name, db, new_db, path
|
|
5609 |
to simplify further comparisons: we want to see if it's a RENAME
|
|
5610 |
later just by comparing the pointers, avoiding the need for strcmp.
|
|
5611 |
*/
|
|
5612 |
thd_proc_info(thd, "init"); |
|
5613 |
table_name=table_list->table_name; |
|
5614 |
alias= (lower_case_table_names == 2) ? table_list->alias : table_name; |
|
5615 |
db=table_list->db; |
|
5616 |
if (!new_db || !my_strcasecmp(table_alias_charset, new_db, db)) |
|
5617 |
new_db= db; |
|
5618 |
build_table_filename(path, sizeof(path), db, table_name, "", 0); |
|
5619 |
||
5620 |
mysql_ha_rm_tables(thd, table_list, FALSE); |
|
5621 |
||
5622 |
/* DISCARD/IMPORT TABLESPACE is always alone in an ALTER TABLE */
|
|
5623 |
if (alter_info->tablespace_op != NO_TABLESPACE_OP) |
|
5624 |
/* Conditionally writes to binlog. */
|
|
5625 |
DBUG_RETURN(mysql_discard_or_import_tablespace(thd,table_list, |
|
5626 |
alter_info->tablespace_op)); |
|
5627 |
strxnmov(new_name_buff, sizeof (new_name_buff) - 1, mysql_data_home, "/", db, |
|
5628 |
"/", table_name, reg_ext, NullS); |
|
5629 |
(void) unpack_filename(new_name_buff, new_name_buff); |
|
5630 |
/*
|
|
5631 |
If this is just a rename of a view, short cut to the
|
|
5632 |
following scenario: 1) lock LOCK_open 2) do a RENAME
|
|
5633 |
2) unlock LOCK_open.
|
|
5634 |
This is a copy-paste added to make sure
|
|
5635 |
ALTER (sic:) TABLE .. RENAME works for views. ALTER VIEW is handled
|
|
5636 |
as an independent branch in mysql_execute_command. The need
|
|
5637 |
for a copy-paste arose because the main code flow of ALTER TABLE
|
|
5638 |
... RENAME tries to use open_ltable, which does not work for views
|
|
5639 |
(open_ltable was never modified to merge table lists of child tables
|
|
5640 |
into the main table list, like open_tables does).
|
|
5641 |
This code is wrong and will be removed, please do not copy.
|
|
5642 |
*/
|
|
5643 |
frm_type= mysql_frm_type(thd, new_name_buff, &table_type); |
|
5644 |
||
5645 |
if (!(table= open_n_lock_single_table(thd, table_list, TL_WRITE_ALLOW_READ))) |
|
5646 |
DBUG_RETURN(TRUE); |
|
5647 |
table->use_all_columns(); |
|
5648 |
||
5649 |
/*
|
|
5650 |
Prohibit changing of the UNION list of a non-temporary MERGE table
|
|
5651 |
under LOCK tables. It would be quite difficult to reuse a shrinked
|
|
5652 |
set of tables from the old table or to open a new TABLE object for
|
|
5653 |
an extended list and verify that they belong to locked tables.
|
|
5654 |
*/
|
|
5655 |
if (thd->locked_tables && |
|
5656 |
(create_info->used_fields & HA_CREATE_USED_UNION) && |
|
5657 |
(table->s->tmp_table == NO_TMP_TABLE)) |
|
5658 |
{
|
|
5659 |
my_error(ER_LOCK_OR_ACTIVE_TRANSACTION, MYF(0)); |
|
5660 |
DBUG_RETURN(TRUE); |
|
5661 |
}
|
|
5662 |
||
5663 |
/* Check that we are not trying to rename to an existing table */
|
|
5664 |
if (new_name) |
|
5665 |
{
|
|
5666 |
DBUG_PRINT("info", ("new_db.new_name: '%s'.'%s'", new_db, new_name)); |
|
5667 |
strmov(new_name_buff,new_name); |
|
5668 |
strmov(new_alias= new_alias_buff, new_name); |
|
5669 |
if (lower_case_table_names) |
|
5670 |
{
|
|
5671 |
if (lower_case_table_names != 2) |
|
5672 |
{
|
|
5673 |
my_casedn_str(files_charset_info, new_name_buff); |
|
5674 |
new_alias= new_name; // Create lower case table name |
|
5675 |
}
|
|
5676 |
my_casedn_str(files_charset_info, new_name); |
|
5677 |
}
|
|
5678 |
if (new_db == db && |
|
5679 |
!my_strcasecmp(table_alias_charset, new_name_buff, table_name)) |
|
5680 |
{
|
|
5681 |
/*
|
|
5682 |
Source and destination table names are equal: make later check
|
|
5683 |
easier.
|
|
5684 |
*/
|
|
5685 |
new_alias= new_name= table_name; |
|
5686 |
}
|
|
5687 |
else
|
|
5688 |
{
|
|
5689 |
if (table->s->tmp_table != NO_TMP_TABLE) |
|
5690 |
{
|
|
5691 |
if (find_temporary_table(thd,new_db,new_name_buff)) |
|
5692 |
{
|
|
5693 |
my_error(ER_TABLE_EXISTS_ERROR, MYF(0), new_name_buff); |
|
5694 |
DBUG_RETURN(TRUE); |
|
5695 |
}
|
|
5696 |
}
|
|
5697 |
else
|
|
5698 |
{
|
|
5699 |
if (lock_table_name_if_not_cached(thd, new_db, new_name, &name_lock)) |
|
5700 |
DBUG_RETURN(TRUE); |
|
5701 |
if (!name_lock) |
|
5702 |
{
|
|
5703 |
my_error(ER_TABLE_EXISTS_ERROR, MYF(0), new_alias); |
|
5704 |
DBUG_RETURN(TRUE); |
|
5705 |
}
|
|
5706 |
||
5707 |
build_table_filename(new_name_buff, sizeof(new_name_buff), |
|
5708 |
new_db, new_name_buff, reg_ext, 0); |
|
5709 |
if (!access(new_name_buff, F_OK)) |
|
5710 |
{
|
|
5711 |
/* Table will be closed in do_command() */
|
|
5712 |
my_error(ER_TABLE_EXISTS_ERROR, MYF(0), new_alias); |
|
5713 |
goto err; |
|
5714 |
}
|
|
5715 |
}
|
|
5716 |
}
|
|
5717 |
}
|
|
5718 |
else
|
|
5719 |
{
|
|
5720 |
new_alias= (lower_case_table_names == 2) ? alias : table_name; |
|
5721 |
new_name= table_name; |
|
5722 |
}
|
|
5723 |
||
5724 |
old_db_type= table->s->db_type(); |
|
5725 |
if (!create_info->db_type) |
|
5726 |
{
|
|
5727 |
create_info->db_type= old_db_type; |
|
5728 |
}
|
|
5729 |
||
5730 |
if (check_engine(thd, new_name, create_info)) |
|
5731 |
goto err; |
|
5732 |
new_db_type= create_info->db_type; |
|
5733 |
||
5734 |
if (new_db_type != old_db_type || |
|
5735 |
!table->file->can_switch_engines()) |
|
5736 |
{
|
|
5737 |
my_error(ER_ROW_IS_REFERENCED, MYF(0)); |
|
5738 |
goto err; |
|
5739 |
}
|
|
5740 |
||
5741 |
if (create_info->row_type == ROW_TYPE_NOT_USED) |
|
5742 |
create_info->row_type= table->s->row_type; |
|
5743 |
||
5744 |
DBUG_PRINT("info", ("old type: %s new type: %s", |
|
5745 |
ha_resolve_storage_engine_name(old_db_type), |
|
5746 |
ha_resolve_storage_engine_name(new_db_type))); |
|
5747 |
if (ha_check_storage_engine_flag(old_db_type, HTON_ALTER_NOT_SUPPORTED) || |
|
5748 |
ha_check_storage_engine_flag(new_db_type, HTON_ALTER_NOT_SUPPORTED)) |
|
5749 |
{
|
|
5750 |
DBUG_PRINT("info", ("doesn't support alter")); |
|
5751 |
my_error(ER_ILLEGAL_HA, MYF(0), table_name); |
|
5752 |
goto err; |
|
5753 |
}
|
|
5754 |
||
5755 |
thd_proc_info(thd, "setup"); |
|
5756 |
if (!(alter_info->flags & ~(ALTER_RENAME | ALTER_KEYS_ONOFF)) && |
|
5757 |
!table->s->tmp_table) // no need to touch frm |
|
5758 |
{
|
|
5759 |
switch (alter_info->keys_onoff) { |
|
5760 |
case LEAVE_AS_IS: |
|
5761 |
break; |
|
5762 |
case ENABLE: |
|
5763 |
/*
|
|
5764 |
wait_while_table_is_used() ensures that table being altered is
|
|
5765 |
opened only by this thread and that TABLE::TABLE_SHARE::version
|
|
5766 |
of TABLE object corresponding to this table is 0.
|
|
5767 |
The latter guarantees that no DML statement will open this table
|
|
5768 |
until ALTER TABLE finishes (i.e. until close_thread_tables())
|
|
5769 |
while the fact that the table is still open gives us protection
|
|
5770 |
from concurrent DDL statements.
|
|
5771 |
*/
|
|
5772 |
VOID(pthread_mutex_lock(&LOCK_open)); |
|
5773 |
wait_while_table_is_used(thd, table, HA_EXTRA_FORCE_REOPEN); |
|
5774 |
VOID(pthread_mutex_unlock(&LOCK_open)); |
|
5775 |
DBUG_EXECUTE_IF("sleep_alter_enable_indexes", my_sleep(6000000);); |
|
5776 |
error= table->file->ha_enable_indexes(HA_KEY_SWITCH_NONUNIQ_SAVE); |
|
5777 |
/* COND_refresh will be signaled in close_thread_tables() */
|
|
5778 |
break; |
|
5779 |
case DISABLE: |
|
5780 |
VOID(pthread_mutex_lock(&LOCK_open)); |
|
5781 |
wait_while_table_is_used(thd, table, HA_EXTRA_FORCE_REOPEN); |
|
5782 |
VOID(pthread_mutex_unlock(&LOCK_open)); |
|
5783 |
error=table->file->ha_disable_indexes(HA_KEY_SWITCH_NONUNIQ_SAVE); |
|
5784 |
/* COND_refresh will be signaled in close_thread_tables() */
|
|
5785 |
break; |
|
5786 |
default: |
|
5787 |
DBUG_ASSERT(FALSE); |
|
5788 |
error= 0; |
|
5789 |
break; |
|
5790 |
}
|
|
5791 |
if (error == HA_ERR_WRONG_COMMAND) |
|
5792 |
{
|
|
5793 |
error= 0; |
|
5794 |
push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_NOTE, |
|
5795 |
ER_ILLEGAL_HA, ER(ER_ILLEGAL_HA), |
|
5796 |
table->alias); |
|
5797 |
}
|
|
5798 |
||
5799 |
VOID(pthread_mutex_lock(&LOCK_open)); |
|
5800 |
/*
|
|
5801 |
Unlike to the above case close_cached_table() below will remove ALL
|
|
5802 |
instances of TABLE from table cache (it will also remove table lock
|
|
5803 |
held by this thread). So to make actual table renaming and writing
|
|
5804 |
to binlog atomic we have to put them into the same critical section
|
|
5805 |
protected by LOCK_open mutex. This also removes gap for races between
|
|
5806 |
access() and mysql_rename_table() calls.
|
|
5807 |
*/
|
|
5808 |
||
5809 |
if (!error && (new_name != table_name || new_db != db)) |
|
5810 |
{
|
|
5811 |
thd_proc_info(thd, "rename"); |
|
5812 |
/*
|
|
5813 |
Then do a 'simple' rename of the table. First we need to close all
|
|
5814 |
instances of 'source' table.
|
|
5815 |
*/
|
|
5816 |
close_cached_table(thd, table); |
|
5817 |
/*
|
|
5818 |
Then, we want check once again that target table does not exist.
|
|
5819 |
Actually the order of these two steps does not matter since
|
|
5820 |
earlier we took name-lock on the target table, so we do them
|
|
5821 |
in this particular order only to be consistent with 5.0, in which
|
|
5822 |
we don't take this name-lock and where this order really matters.
|
|
5823 |
TODO: Investigate if we need this access() check at all.
|
|
5824 |
*/
|
|
5825 |
if (!access(new_name_buff,F_OK)) |
|
5826 |
{
|
|
5827 |
my_error(ER_TABLE_EXISTS_ERROR, MYF(0), new_name); |
|
5828 |
error= -1; |
|
5829 |
}
|
|
5830 |
else
|
|
5831 |
{
|
|
5832 |
*fn_ext(new_name)=0; |
|
5833 |
if (mysql_rename_table(old_db_type,db,table_name,new_db,new_alias, 0)) |
|
5834 |
error= -1; |
|
5835 |
else if (0) |
|
5836 |
{
|
|
5837 |
VOID(mysql_rename_table(old_db_type, new_db, new_alias, db, |
|
5838 |
table_name, 0)); |
|
5839 |
error= -1; |
|
5840 |
}
|
|
5841 |
}
|
|
5842 |
}
|
|
5843 |
||
5844 |
if (error == HA_ERR_WRONG_COMMAND) |
|
5845 |
{
|
|
5846 |
error= 0; |
|
5847 |
push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_NOTE, |
|
5848 |
ER_ILLEGAL_HA, ER(ER_ILLEGAL_HA), |
|
5849 |
table->alias); |
|
5850 |
}
|
|
5851 |
||
5852 |
if (!error) |
|
5853 |
{
|
|
5854 |
write_bin_log(thd, TRUE, thd->query, thd->query_length); |
|
5855 |
my_ok(thd); |
|
5856 |
}
|
|
5857 |
else if (error > 0) |
|
5858 |
{
|
|
5859 |
table->file->print_error(error, MYF(0)); |
|
5860 |
error= -1; |
|
5861 |
}
|
|
5862 |
if (name_lock) |
|
5863 |
unlink_open_table(thd, name_lock, FALSE); |
|
5864 |
VOID(pthread_mutex_unlock(&LOCK_open)); |
|
5865 |
table_list->table= NULL; // For query cache |
|
5866 |
DBUG_RETURN(error); |
|
5867 |
}
|
|
5868 |
||
5869 |
/* We have to do full alter table. */
|
|
5870 |
||
5871 |
/*
|
|
5872 |
If the old table had partitions and we are doing ALTER TABLE ...
|
|
5873 |
engine= <new_engine>, the new table must preserve the original
|
|
5874 |
partitioning. That means that the new engine is still the
|
|
5875 |
partitioning engine, not the engine specified in the parser.
|
|
5876 |
This is discovered in prep_alter_part_table, which in such case
|
|
5877 |
updates create_info->db_type.
|
|
5878 |
Now we need to update the stack copy of create_info->db_type,
|
|
5879 |
as otherwise we won't be able to correctly move the files of the
|
|
5880 |
temporary table to the result table files.
|
|
5881 |
*/
|
|
5882 |
new_db_type= create_info->db_type; |
|
5883 |
||
5884 |
if (mysql_prepare_alter_table(thd, table, create_info, alter_info)) |
|
5885 |
goto err; |
|
5886 |
||
5887 |
set_table_default_charset(thd, create_info, db); |
|
5888 |
||
5889 |
||
5890 |
if (thd->variables.old_alter_table |
|
5891 |
|| (table->s->db_type() != create_info->db_type) |
|
5892 |
)
|
|
5893 |
{
|
|
5894 |
if (alter_info->build_method == HA_BUILD_ONLINE) |
|
5895 |
{
|
|
5896 |
my_error(ER_NOT_SUPPORTED_YET, MYF(0), thd->query); |
|
5897 |
goto err; |
|
5898 |
}
|
|
5899 |
alter_info->build_method= HA_BUILD_OFFLINE; |
|
5900 |
}
|
|
5901 |
||
5902 |
if (alter_info->build_method != HA_BUILD_OFFLINE) |
|
5903 |
{
|
|
5904 |
TABLE *altered_table= 0; |
|
5905 |
HA_ALTER_INFO ha_alter_info; |
|
5906 |
HA_ALTER_FLAGS ha_alter_flags; |
|
5907 |
uint table_changes= IS_EQUAL_YES; |
|
5908 |
bool need_copy_table= TRUE; |
|
5909 |
/* Check how much the tables differ. */
|
|
5910 |
if (compare_tables(thd, table, alter_info, |
|
5911 |
create_info, order_num, |
|
5912 |
&ha_alter_flags, |
|
5913 |
&ha_alter_info, |
|
5914 |
&table_changes)) |
|
5915 |
{
|
|
5916 |
DBUG_RETURN(TRUE); |
|
5917 |
}
|
|
5918 |
||
5919 |
/*
|
|
5920 |
Check if storage engine supports altering the table
|
|
5921 |
on-line.
|
|
5922 |
*/
|
|
5923 |
||
5924 |
#ifndef DBUG_OFF
|
|
5925 |
{
|
|
5926 |
char dbug_string[HA_MAX_ALTER_FLAGS+1]; |
|
5927 |
ha_alter_flags.print(dbug_string); |
|
5928 |
DBUG_PRINT("info", ("need_copy_table: %u, table_changes: %u, Real alter_flags: %s", |
|
5929 |
need_copy_table, table_changes, |
|
5930 |
(char *) dbug_string)); |
|
5931 |
}
|
|
5932 |
#endif
|
|
5933 |
||
5934 |
/*
|
|
5935 |
If table is not renamed, changed database and
|
|
5936 |
some change was detected then check if engine
|
|
5937 |
can do the change on-line
|
|
5938 |
*/
|
|
5939 |
if (new_name == table_name && new_db == db && |
|
5940 |
ha_alter_flags.is_set()) |
|
5941 |
{
|
|
5942 |
Alter_info tmp_alter_info(*alter_info, thd->mem_root); |
|
5943 |
||
5944 |
/*
|
|
5945 |
If no table rename,
|
|
5946 |
check if table can be altered on-line
|
|
5947 |
*/
|
|
5948 |
if (!(altered_table= create_altered_table(thd, |
|
5949 |
table, |
|
5950 |
new_db, |
|
5951 |
create_info, |
|
5952 |
&tmp_alter_info, |
|
5953 |
!strcmp(db, new_db)))) |
|
5954 |
goto err; |
|
5955 |
||
5956 |
switch (table->file->check_if_supported_alter(altered_table, |
|
5957 |
create_info, |
|
5958 |
&ha_alter_flags, |
|
5959 |
table_changes)) { |
|
5960 |
case HA_ALTER_SUPPORTED_WAIT_LOCK: |
|
5961 |
case HA_ALTER_SUPPORTED_NO_LOCK: |
|
5962 |
/*
|
|
5963 |
@todo: Currently we always acquire an exclusive name
|
|
5964 |
lock on the table metadata when performing fast or online
|
|
5965 |
ALTER TABLE. In future we may consider this unnecessary,
|
|
5966 |
and narrow the scope of the exclusive name lock to only
|
|
5967 |
cover manipulation with .frms. Storage engine API
|
|
5968 |
call check_if_supported_alter has provision for this
|
|
5969 |
already now.
|
|
5970 |
*/
|
|
5971 |
need_copy_table= FALSE; |
|
5972 |
break; |
|
5973 |
case HA_ALTER_NOT_SUPPORTED: |
|
5974 |
if (alter_info->build_method == HA_BUILD_ONLINE) |
|
5975 |
{
|
|
5976 |
my_error(ER_NOT_SUPPORTED_YET, MYF(0), thd->query); |
|
5977 |
close_temporary_table(thd, altered_table, 1, 1); |
|
5978 |
goto err; |
|
5979 |
}
|
|
5980 |
need_copy_table= TRUE; |
|
5981 |
break; |
|
5982 |
case HA_ALTER_ERROR: |
|
5983 |
default: |
|
5984 |
close_temporary_table(thd, altered_table, 1, 1); |
|
5985 |
goto err; |
|
5986 |
}
|
|
5987 |
#ifndef DBUG_OFF
|
|
5988 |
{
|
|
5989 |
char dbug_string[HA_MAX_ALTER_FLAGS+1]; |
|
5990 |
ha_alter_flags.print(dbug_string); |
|
5991 |
DBUG_PRINT("info", ("need_copy_table: %u, table_changes: %u, Real alter_flags: %s", |
|
5992 |
need_copy_table, table_changes, |
|
5993 |
(char *) dbug_string)); |
|
5994 |
}
|
|
5995 |
#endif
|
|
5996 |
||
5997 |
}
|
|
5998 |
/* TODO need to check if changes can be handled as fast ALTER TABLE */
|
|
5999 |
if (!altered_table) |
|
6000 |
need_copy_table= TRUE; |
|
6001 |
||
6002 |
if (!need_copy_table) |
|
6003 |
{
|
|
6004 |
error= mysql_fast_or_online_alter_table(thd, |
|
6005 |
table, |
|
6006 |
altered_table, |
|
6007 |
create_info, |
|
6008 |
&ha_alter_info, |
|
6009 |
&ha_alter_flags, |
|
6010 |
alter_info->keys_onoff); |
|
6011 |
if (thd->lock) |
|
6012 |
{
|
|
6013 |
mysql_unlock_tables(thd, thd->lock); |
|
6014 |
thd->lock=0; |
|
6015 |
}
|
|
6016 |
close_temporary_table(thd, altered_table, 1, 1); |
|
6017 |
||
6018 |
if (error) |
|
6019 |
{
|
|
6020 |
switch (error) { |
|
6021 |
case(-1): |
|
6022 |
goto err_with_placeholders; |
|
6023 |
default: |
|
6024 |
goto err; |
|
6025 |
}
|
|
6026 |
}
|
|
6027 |
else
|
|
6028 |
{
|
|
6029 |
pthread_mutex_lock(&LOCK_open); |
|
6030 |
goto end_online; |
|
6031 |
}
|
|
6032 |
}
|
|
6033 |
||
6034 |
if (altered_table) |
|
6035 |
close_temporary_table(thd, altered_table, 1, 1); |
|
6036 |
}
|
|
6037 |
||
6038 |
my_snprintf(tmp_name, sizeof(tmp_name), "%s-%lx_%lx", tmp_file_prefix, |
|
6039 |
current_pid, thd->thread_id); |
|
6040 |
/* Safety fix for innodb */
|
|
6041 |
if (lower_case_table_names) |
|
6042 |
my_casedn_str(files_charset_info, tmp_name); |
|
6043 |
||
6044 |
||
6045 |
/* Create a temporary table with the new format */
|
|
6046 |
if ((error= create_temporary_table(thd, table, new_db, tmp_name, |
|
6047 |
create_info, alter_info, |
|
6048 |
!strcmp(db, new_db)))) |
|
6049 |
{
|
|
6050 |
goto err; |
|
6051 |
}
|
|
6052 |
||
6053 |
/* Open the table so we need to copy the data to it. */
|
|
6054 |
if (table->s->tmp_table) |
|
6055 |
{
|
|
6056 |
TABLE_LIST tbl; |
|
6057 |
bzero((void*) &tbl, sizeof(tbl)); |
|
6058 |
tbl.db= new_db; |
|
6059 |
tbl.table_name= tbl.alias= tmp_name; |
|
6060 |
/* Table is in thd->temporary_tables */
|
|
6061 |
new_table= open_table(thd, &tbl, thd->mem_root, (bool*) 0, |
|
6062 |
MYSQL_LOCK_IGNORE_FLUSH); |
|
6063 |
}
|
|
6064 |
else
|
|
6065 |
{
|
|
6066 |
char path[FN_REFLEN]; |
|
6067 |
/* table is a normal table: Create temporary table in same directory */
|
|
6068 |
build_table_filename(path, sizeof(path), new_db, tmp_name, "", |
|
6069 |
FN_IS_TMP); |
|
6070 |
/* Open our intermediate table */
|
|
6071 |
new_table=open_temporary_table(thd, path, new_db, tmp_name, 0, OTM_OPEN); |
|
6072 |
}
|
|
6073 |
if (!new_table) |
|
6074 |
goto err1; |
|
6075 |
||
6076 |
/* Copy the data if necessary. */
|
|
6077 |
thd->count_cuted_fields= CHECK_FIELD_WARN; // calc cuted fields |
|
6078 |
thd->cuted_fields=0L; |
|
6079 |
thd_proc_info(thd, "copy to tmp table"); |
|
6080 |
copied=deleted=0; |
|
6081 |
/*
|
|
6082 |
We do not copy data for MERGE tables. Only the children have data.
|
|
6083 |
MERGE tables have HA_NO_COPY_ON_ALTER set.
|
|
6084 |
*/
|
|
6085 |
if (new_table && !(new_table->file->ha_table_flags() & HA_NO_COPY_ON_ALTER)) |
|
6086 |
{
|
|
6087 |
/* We don't want update TIMESTAMP fields during ALTER TABLE. */
|
|
6088 |
new_table->timestamp_field_type= TIMESTAMP_NO_AUTO_SET; |
|
6089 |
new_table->next_number_field=new_table->found_next_number_field; |
|
6090 |
error= copy_data_between_tables(table, new_table, |
|
6091 |
alter_info->create_list, ignore, |
|
6092 |
order_num, order, &copied, &deleted, |
|
6093 |
alter_info->keys_onoff, |
|
6094 |
alter_info->error_if_not_empty); |
|
6095 |
}
|
|
6096 |
else
|
|
6097 |
{
|
|
6098 |
VOID(pthread_mutex_lock(&LOCK_open)); |
|
6099 |
wait_while_table_is_used(thd, table, HA_EXTRA_FORCE_REOPEN); |
|
6100 |
VOID(pthread_mutex_unlock(&LOCK_open)); |
|
6101 |
alter_table_manage_keys(table, table->file->indexes_are_disabled(), |
|
6102 |
alter_info->keys_onoff); |
|
6103 |
error= ha_autocommit_or_rollback(thd, 0); |
|
6104 |
if (end_active_trans(thd)) |
|
6105 |
error= 1; |
|
6106 |
}
|
|
6107 |
thd->count_cuted_fields= CHECK_FIELD_IGNORE; |
|
6108 |
||
6109 |
if (table->s->tmp_table != NO_TMP_TABLE) |
|
6110 |
{
|
|
6111 |
/* We changed a temporary table */
|
|
6112 |
if (error) |
|
6113 |
goto err1; |
|
6114 |
/* Close lock if this is a transactional table */
|
|
6115 |
if (thd->lock) |
|
6116 |
{
|
|
6117 |
mysql_unlock_tables(thd, thd->lock); |
|
6118 |
thd->lock=0; |
|
6119 |
}
|
|
6120 |
/* Remove link to old table and rename the new one */
|
|
6121 |
close_temporary_table(thd, table, 1, 1); |
|
6122 |
/* Should pass the 'new_name' as we store table name in the cache */
|
|
6123 |
if (rename_temporary_table(thd, new_table, new_db, new_name)) |
|
6124 |
goto err1; |
|
6125 |
/* We don't replicate alter table statement on temporary tables */
|
|
6126 |
if (!thd->current_stmt_binlog_row_based) |
|
6127 |
write_bin_log(thd, TRUE, thd->query, thd->query_length); |
|
6128 |
goto end_temporary; |
|
6129 |
}
|
|
6130 |
||
6131 |
if (new_table) |
|
6132 |
{
|
|
6133 |
/*
|
|
6134 |
Close the intermediate table that will be the new table.
|
|
6135 |
Note that MERGE tables do not have their children attached here.
|
|
6136 |
*/
|
|
6137 |
intern_close_table(new_table); |
|
6138 |
my_free(new_table,MYF(0)); |
|
6139 |
}
|
|
6140 |
VOID(pthread_mutex_lock(&LOCK_open)); |
|
6141 |
if (error) |
|
6142 |
{
|
|
6143 |
VOID(quick_rm_table(new_db_type, new_db, tmp_name, FN_IS_TMP)); |
|
6144 |
VOID(pthread_mutex_unlock(&LOCK_open)); |
|
6145 |
goto err; |
|
6146 |
}
|
|
6147 |
||
6148 |
/*
|
|
6149 |
Data is copied. Now we:
|
|
6150 |
1) Wait until all other threads close old version of table.
|
|
6151 |
2) Close instances of table open by this thread and replace them
|
|
6152 |
with exclusive name-locks.
|
|
6153 |
3) Rename the old table to a temp name, rename the new one to the
|
|
6154 |
old name.
|
|
6155 |
4) If we are under LOCK TABLES and don't do ALTER TABLE ... RENAME
|
|
6156 |
we reopen new version of table.
|
|
6157 |
5) Write statement to the binary log.
|
|
6158 |
6) If we are under LOCK TABLES and do ALTER TABLE ... RENAME we
|
|
6159 |
remove name-locks from list of open tables and table cache.
|
|
6160 |
7) If we are not not under LOCK TABLES we rely on close_thread_tables()
|
|
6161 |
call to remove name-locks from table cache and list of open table.
|
|
6162 |
*/
|
|
6163 |
||
6164 |
thd_proc_info(thd, "rename result table"); |
|
6165 |
my_snprintf(old_name, sizeof(old_name), "%s2-%lx-%lx", tmp_file_prefix, |
|
6166 |
current_pid, thd->thread_id); |
|
6167 |
if (lower_case_table_names) |
|
6168 |
my_casedn_str(files_charset_info, old_name); |
|
6169 |
||
6170 |
wait_while_table_is_used(thd, table, HA_EXTRA_PREPARE_FOR_RENAME); |
|
6171 |
close_data_files_and_morph_locks(thd, db, table_name); |
|
6172 |
||
6173 |
error=0; |
|
6174 |
save_old_db_type= old_db_type; |
|
6175 |
||
6176 |
/*
|
|
6177 |
This leads to the storage engine (SE) not being notified for renames in
|
|
6178 |
mysql_rename_table(), because we just juggle with the FRM and nothing
|
|
6179 |
more. If we have an intermediate table, then we notify the SE that
|
|
6180 |
it should become the actual table. Later, we will recycle the old table.
|
|
6181 |
However, in case of ALTER TABLE RENAME there might be no intermediate
|
|
6182 |
table. This is when the old and new tables are compatible, according to
|
|
6183 |
compare_table(). Then, we need one additional call to
|
|
6184 |
mysql_rename_table() with flag NO_FRM_RENAME, which does nothing else but
|
|
6185 |
actual rename in the SE and the FRM is not touched. Note that, if the
|
|
6186 |
table is renamed and the SE is also changed, then an intermediate table
|
|
6187 |
is created and the additional call will not take place.
|
|
6188 |
*/
|
|
6189 |
if (mysql_rename_table(old_db_type, db, table_name, db, old_name, |
|
6190 |
FN_TO_IS_TMP)) |
|
6191 |
{
|
|
6192 |
error=1; |
|
6193 |
VOID(quick_rm_table(new_db_type, new_db, tmp_name, FN_IS_TMP)); |
|
6194 |
}
|
|
6195 |
else if (mysql_rename_table(new_db_type, new_db, tmp_name, new_db, |
|
6196 |
new_alias, FN_FROM_IS_TMP) || ((new_name != table_name || new_db != db) && 0)) |
|
6197 |
{
|
|
6198 |
/* Try to get everything back. */
|
|
6199 |
error=1; |
|
6200 |
VOID(quick_rm_table(new_db_type,new_db,new_alias, 0)); |
|
6201 |
VOID(quick_rm_table(new_db_type, new_db, tmp_name, FN_IS_TMP)); |
|
6202 |
VOID(mysql_rename_table(old_db_type, db, old_name, db, alias, |
|
6203 |
FN_FROM_IS_TMP)); |
|
6204 |
}
|
|
6205 |
||
6206 |
if (error) |
|
6207 |
{
|
|
6208 |
/* This shouldn't happen. But let us play it safe. */
|
|
6209 |
goto err_with_placeholders; |
|
6210 |
}
|
|
6211 |
||
6212 |
VOID(quick_rm_table(old_db_type, db, old_name, FN_IS_TMP)); |
|
6213 |
||
6214 |
end_online: |
|
6215 |
if (thd->locked_tables && new_name == table_name && new_db == db) |
|
6216 |
{
|
|
6217 |
thd->in_lock_tables= 1; |
|
6218 |
error= reopen_tables(thd, 1, 1); |
|
6219 |
thd->in_lock_tables= 0; |
|
6220 |
if (error) |
|
6221 |
goto err_with_placeholders; |
|
6222 |
}
|
|
6223 |
VOID(pthread_mutex_unlock(&LOCK_open)); |
|
6224 |
||
6225 |
thd_proc_info(thd, "end"); |
|
6226 |
||
6227 |
DBUG_EXECUTE_IF("sleep_alter_before_main_binlog", my_sleep(6000000);); |
|
6228 |
||
6229 |
ha_binlog_log_query(thd, create_info->db_type, LOGCOM_ALTER_TABLE, |
|
6230 |
thd->query, thd->query_length, |
|
6231 |
db, table_name); |
|
6232 |
||
6233 |
DBUG_ASSERT(!(mysql_bin_log.is_open() && |
|
6234 |
thd->current_stmt_binlog_row_based && |
|
6235 |
(create_info->options & HA_LEX_CREATE_TMP_TABLE))); |
|
6236 |
write_bin_log(thd, TRUE, thd->query, thd->query_length); |
|
6237 |
||
6238 |
if (ha_check_storage_engine_flag(old_db_type, HTON_FLUSH_AFTER_RENAME)) |
|
6239 |
{
|
|
6240 |
/*
|
|
6241 |
For the alter table to be properly flushed to the logs, we
|
|
6242 |
have to open the new table. If not, we get a problem on server
|
|
6243 |
shutdown. But we do not need to attach MERGE children.
|
|
6244 |
*/
|
|
6245 |
char path[FN_REFLEN]; |
|
6246 |
TABLE *t_table; |
|
6247 |
build_table_filename(path, sizeof(path), new_db, table_name, "", 0); |
|
6248 |
t_table= open_temporary_table(thd, path, new_db, tmp_name, FALSE, OTM_OPEN); |
|
6249 |
if (t_table) |
|
6250 |
{
|
|
6251 |
intern_close_table(t_table); |
|
6252 |
my_free(t_table, MYF(0)); |
|
6253 |
}
|
|
6254 |
else
|
|
6255 |
sql_print_warning("Could not open table %s.%s after rename\n", |
|
6256 |
new_db,table_name); |
|
6257 |
ha_flush_logs(old_db_type); |
|
6258 |
}
|
|
6259 |
table_list->table=0; // For query cache |
|
6260 |
||
6261 |
if (thd->locked_tables && (new_name != table_name || new_db != db)) |
|
6262 |
{
|
|
6263 |
/*
|
|
6264 |
If are we under LOCK TABLES and did ALTER TABLE with RENAME we need
|
|
6265 |
to remove placeholders for the old table and for the target table
|
|
6266 |
from the list of open tables and table cache. If we are not under
|
|
6267 |
LOCK TABLES we can rely on close_thread_tables() doing this job.
|
|
6268 |
*/
|
|
6269 |
pthread_mutex_lock(&LOCK_open); |
|
6270 |
unlink_open_table(thd, table, FALSE); |
|
6271 |
unlink_open_table(thd, name_lock, FALSE); |
|
6272 |
pthread_mutex_unlock(&LOCK_open); |
|
6273 |
}
|
|
6274 |
||
6275 |
end_temporary: |
|
6276 |
my_snprintf(tmp_name, sizeof(tmp_name), ER(ER_INSERT_INFO), |
|
6277 |
(ulong) (copied + deleted), (ulong) deleted, |
|
6278 |
(ulong) thd->cuted_fields); |
|
6279 |
my_ok(thd, copied + deleted, 0L, tmp_name); |
|
6280 |
thd->some_tables_deleted=0; |
|
6281 |
DBUG_RETURN(FALSE); |
|
6282 |
||
6283 |
err1: |
|
6284 |
if (new_table) |
|
6285 |
{
|
|
6286 |
/* close_temporary_table() frees the new_table pointer. */
|
|
6287 |
close_temporary_table(thd, new_table, 1, 1); |
|
6288 |
}
|
|
6289 |
else
|
|
6290 |
VOID(quick_rm_table(new_db_type, new_db, tmp_name, FN_IS_TMP)); |
|
6291 |
||
6292 |
err: |
|
6293 |
/*
|
|
6294 |
No default value was provided for a DATE/DATETIME field, the
|
|
6295 |
current sql_mode doesn't allow the '0000-00-00' value and
|
|
6296 |
the table to be altered isn't empty.
|
|
6297 |
Report error here.
|
|
6298 |
*/
|
|
6299 |
if (alter_info->error_if_not_empty && thd->row_count) |
|
6300 |
{
|
|
6301 |
const char *f_val= 0; |
|
6302 |
enum enum_mysql_timestamp_type t_type= MYSQL_TIMESTAMP_DATE; |
|
6303 |
switch (alter_info->datetime_field->sql_type) |
|
6304 |
{
|
|
6305 |
case MYSQL_TYPE_DATE: |
|
6306 |
case MYSQL_TYPE_NEWDATE: |
|
6307 |
f_val= "0000-00-00"; |
|
6308 |
t_type= MYSQL_TIMESTAMP_DATE; |
|
6309 |
break; |
|
6310 |
case MYSQL_TYPE_DATETIME: |
|
6311 |
f_val= "0000-00-00 00:00:00"; |
|
6312 |
t_type= MYSQL_TIMESTAMP_DATETIME; |
|
6313 |
break; |
|
6314 |
default: |
|
6315 |
/* Shouldn't get here. */
|
|
6316 |
DBUG_ASSERT(0); |
|
6317 |
}
|
|
6318 |
bool save_abort_on_warning= thd->abort_on_warning; |
|
6319 |
thd->abort_on_warning= TRUE; |
|
6320 |
make_truncated_value_warning(thd, MYSQL_ERROR::WARN_LEVEL_ERROR, |
|
6321 |
f_val, strlength(f_val), t_type, |
|
6322 |
alter_info->datetime_field->field_name); |
|
6323 |
thd->abort_on_warning= save_abort_on_warning; |
|
6324 |
}
|
|
6325 |
if (name_lock) |
|
6326 |
{
|
|
6327 |
pthread_mutex_lock(&LOCK_open); |
|
6328 |
unlink_open_table(thd, name_lock, FALSE); |
|
6329 |
pthread_mutex_unlock(&LOCK_open); |
|
6330 |
}
|
|
6331 |
DBUG_RETURN(TRUE); |
|
6332 |
||
6333 |
err_with_placeholders: |
|
6334 |
/*
|
|
6335 |
An error happened while we were holding exclusive name-lock on table
|
|
6336 |
being altered. To be safe under LOCK TABLES we should remove placeholders
|
|
6337 |
from list of open tables list and table cache.
|
|
6338 |
*/
|
|
6339 |
unlink_open_table(thd, table, FALSE); |
|
6340 |
if (name_lock) |
|
6341 |
unlink_open_table(thd, name_lock, FALSE); |
|
6342 |
VOID(pthread_mutex_unlock(&LOCK_open)); |
|
6343 |
DBUG_RETURN(TRUE); |
|
6344 |
}
|
|
6345 |
/* mysql_alter_table */
|
|
6346 |
||
6347 |
static int |
|
6348 |
copy_data_between_tables(TABLE *from,TABLE *to, |
|
6349 |
List<Create_field> &create, |
|
6350 |
bool ignore, |
|
6351 |
uint order_num, ORDER *order, |
|
6352 |
ha_rows *copied, |
|
6353 |
ha_rows *deleted, |
|
6354 |
enum enum_enable_or_disable keys_onoff, |
|
6355 |
bool error_if_not_empty) |
|
6356 |
{
|
|
6357 |
int error; |
|
6358 |
Copy_field *copy,*copy_end; |
|
6359 |
ulong found_count,delete_count; |
|
6360 |
THD *thd= current_thd; |
|
6361 |
uint length= 0; |
|
6362 |
SORT_FIELD *sortorder; |
|
6363 |
READ_RECORD info; |
|
6364 |
TABLE_LIST tables; |
|
6365 |
List<Item> fields; |
|
6366 |
List<Item> all_fields; |
|
6367 |
ha_rows examined_rows; |
|
6368 |
bool auto_increment_field_copied= 0; |
|
6369 |
ulong save_sql_mode; |
|
6370 |
ulonglong prev_insert_id; |
|
6371 |
DBUG_ENTER("copy_data_between_tables"); |
|
6372 |
||
6373 |
/*
|
|
6374 |
Turn off recovery logging since rollback of an alter table is to
|
|
6375 |
delete the new table so there is no need to log the changes to it.
|
|
6376 |
|
|
6377 |
This needs to be done before external_lock
|
|
6378 |
*/
|
|
6379 |
error= ha_enable_transaction(thd, FALSE); |
|
6380 |
if (error) |
|
6381 |
DBUG_RETURN(-1); |
|
6382 |
||
6383 |
if (!(copy= new Copy_field[to->s->fields])) |
|
6384 |
DBUG_RETURN(-1); /* purecov: inspected */ |
|
6385 |
||
6386 |
if (to->file->ha_external_lock(thd, F_WRLCK)) |
|
6387 |
DBUG_RETURN(-1); |
|
6388 |
||
6389 |
/* We need external lock before we can disable/enable keys */
|
|
6390 |
alter_table_manage_keys(to, from->file->indexes_are_disabled(), keys_onoff); |
|
6391 |
||
6392 |
/* We can abort alter table for any table type */
|
|
6393 |
thd->abort_on_warning= !ignore; |
|
6394 |
||
6395 |
from->file->info(HA_STATUS_VARIABLE | HA_STATUS_NO_LOCK); |
|
6396 |
to->file->ha_start_bulk_insert(from->file->stats.records); |
|
6397 |
||
6398 |
save_sql_mode= thd->variables.sql_mode; |
|
6399 |
||
6400 |
List_iterator<Create_field> it(create); |
|
6401 |
Create_field *def; |
|
6402 |
copy_end=copy; |
|
6403 |
for (Field **ptr=to->field ; *ptr ; ptr++) |
|
6404 |
{
|
|
6405 |
def=it++; |
|
6406 |
if (def->field) |
|
6407 |
{
|
|
6408 |
if (*ptr == to->next_number_field) |
|
6409 |
{
|
|
6410 |
auto_increment_field_copied= TRUE; |
|
6411 |
/*
|
|
6412 |
If we are going to copy contents of one auto_increment column to
|
|
6413 |
another auto_increment column it is sensible to preserve zeroes.
|
|
6414 |
This condition also covers case when we are don't actually alter
|
|
6415 |
auto_increment column.
|
|
6416 |
*/
|
|
6417 |
if (def->field == from->found_next_number_field) |
|
6418 |
thd->variables.sql_mode|= MODE_NO_AUTO_VALUE_ON_ZERO; |
|
6419 |
}
|
|
6420 |
(copy_end++)->set(*ptr,def->field,0); |
|
6421 |
}
|
|
6422 |
||
6423 |
}
|
|
6424 |
||
6425 |
found_count=delete_count=0; |
|
6426 |
||
6427 |
if (order) |
|
6428 |
{
|
|
6429 |
if (to->s->primary_key != MAX_KEY && to->file->primary_key_is_clustered()) |
|
6430 |
{
|
|
6431 |
char warn_buff[MYSQL_ERRMSG_SIZE]; |
|
6432 |
my_snprintf(warn_buff, sizeof(warn_buff), |
|
6433 |
"ORDER BY ignored as there is a user-defined clustered index"
|
|
6434 |
" in the table '%-.192s'", from->s->table_name.str); |
|
6435 |
push_warning(thd, MYSQL_ERROR::WARN_LEVEL_WARN, ER_UNKNOWN_ERROR, |
|
6436 |
warn_buff); |
|
6437 |
}
|
|
6438 |
else
|
|
6439 |
{
|
|
6440 |
from->sort.io_cache=(IO_CACHE*) my_malloc(sizeof(IO_CACHE), |
|
6441 |
MYF(MY_FAE | MY_ZEROFILL)); |
|
6442 |
bzero((char *) &tables, sizeof(tables)); |
|
6443 |
tables.table= from; |
|
6444 |
tables.alias= tables.table_name= from->s->table_name.str; |
|
6445 |
tables.db= from->s->db.str; |
|
6446 |
error= 1; |
|
6447 |
||
6448 |
if (thd->lex->select_lex.setup_ref_array(thd, order_num) || |
|
6449 |
setup_order(thd, thd->lex->select_lex.ref_pointer_array, |
|
6450 |
&tables, fields, all_fields, order) || |
|
6451 |
!(sortorder= make_unireg_sortorder(order, &length, NULL)) || |
|
6452 |
(from->sort.found_records= filesort(thd, from, sortorder, length, |
|
6453 |
(SQL_SELECT *) 0, HA_POS_ERROR, |
|
6454 |
1, &examined_rows)) == |
|
6455 |
HA_POS_ERROR) |
|
6456 |
goto err; |
|
6457 |
}
|
|
6458 |
};
|
|
6459 |
||
6460 |
/* Tell handler that we have values for all columns in the to table */
|
|
6461 |
to->use_all_columns(); |
|
6462 |
init_read_record(&info, thd, from, (SQL_SELECT *) 0, 1,1); |
|
6463 |
if (ignore) |
|
6464 |
to->file->extra(HA_EXTRA_IGNORE_DUP_KEY); |
|
6465 |
thd->row_count= 0; |
|
6466 |
restore_record(to, s->default_values); // Create empty record |
|
6467 |
while (!(error=info.read_record(&info))) |
|
6468 |
{
|
|
6469 |
if (thd->killed) |
|
6470 |
{
|
|
6471 |
thd->send_kill_message(); |
|
6472 |
error= 1; |
|
6473 |
break; |
|
6474 |
}
|
|
6475 |
thd->row_count++; |
|
6476 |
/* Return error if source table isn't empty. */
|
|
6477 |
if (error_if_not_empty) |
|
6478 |
{
|
|
6479 |
error= 1; |
|
6480 |
break; |
|
6481 |
}
|
|
6482 |
if (to->next_number_field) |
|
6483 |
{
|
|
6484 |
if (auto_increment_field_copied) |
|
6485 |
to->auto_increment_field_not_null= TRUE; |
|
6486 |
else
|
|
6487 |
to->next_number_field->reset(); |
|
6488 |
}
|
|
6489 |
||
6490 |
for (Copy_field *copy_ptr=copy ; copy_ptr != copy_end ; copy_ptr++) |
|
6491 |
{
|
|
6492 |
copy_ptr->do_copy(copy_ptr); |
|
6493 |
}
|
|
6494 |
prev_insert_id= to->file->next_insert_id; |
|
6495 |
error=to->file->ha_write_row(to->record[0]); |
|
6496 |
to->auto_increment_field_not_null= FALSE; |
|
6497 |
if (error) |
|
6498 |
{
|
|
6499 |
if (!ignore || |
|
6500 |
to->file->is_fatal_error(error, HA_CHECK_DUP)) |
|
6501 |
{
|
|
6502 |
if (!to->file->is_fatal_error(error, HA_CHECK_DUP)) |
|
6503 |
{
|
|
6504 |
uint key_nr= to->file->get_dup_key(error); |
|
6505 |
if ((int) key_nr >= 0) |
|
6506 |
{
|
|
6507 |
const char *err_msg= ER(ER_DUP_ENTRY_WITH_KEY_NAME); |
|
6508 |
if (key_nr == 0 && |
|
6509 |
(to->key_info[0].key_part[0].field->flags & |
|
6510 |
AUTO_INCREMENT_FLAG)) |
|
6511 |
err_msg= ER(ER_DUP_ENTRY_AUTOINCREMENT_CASE); |
|
6512 |
to->file->print_keydup_error(key_nr, err_msg); |
|
6513 |
break; |
|
6514 |
}
|
|
6515 |
}
|
|
6516 |
||
6517 |
to->file->print_error(error,MYF(0)); |
|
6518 |
break; |
|
6519 |
}
|
|
6520 |
to->file->restore_auto_increment(prev_insert_id); |
|
6521 |
delete_count++; |
|
6522 |
}
|
|
6523 |
else
|
|
6524 |
found_count++; |
|
6525 |
}
|
|
6526 |
end_read_record(&info); |
|
6527 |
free_io_cache(from); |
|
6528 |
delete [] copy; // This is never 0 |
|
6529 |
||
6530 |
if (to->file->ha_end_bulk_insert() && error <= 0) |
|
6531 |
{
|
|
6532 |
to->file->print_error(my_errno,MYF(0)); |
|
6533 |
error=1; |
|
6534 |
}
|
|
6535 |
to->file->extra(HA_EXTRA_NO_IGNORE_DUP_KEY); |
|
6536 |
||
6537 |
if (ha_enable_transaction(thd, TRUE)) |
|
6538 |
{
|
|
6539 |
error= 1; |
|
6540 |
goto err; |
|
6541 |
}
|
|
6542 |
||
6543 |
/*
|
|
6544 |
Ensure that the new table is saved properly to disk so that we
|
|
6545 |
can do a rename
|
|
6546 |
*/
|
|
6547 |
if (ha_autocommit_or_rollback(thd, 0)) |
|
6548 |
error=1; |
|
6549 |
if (end_active_trans(thd)) |
|
6550 |
error=1; |
|
6551 |
||
6552 |
err: |
|
6553 |
thd->variables.sql_mode= save_sql_mode; |
|
6554 |
thd->abort_on_warning= 0; |
|
6555 |
free_io_cache(from); |
|
6556 |
*copied= found_count; |
|
6557 |
*deleted=delete_count; |
|
6558 |
to->file->ha_release_auto_increment(); |
|
6559 |
if (to->file->ha_external_lock(thd,F_UNLCK)) |
|
6560 |
error=1; |
|
6561 |
DBUG_RETURN(error > 0 ? -1 : 0); |
|
6562 |
}
|
|
6563 |
||
6564 |
||
6565 |
/*
|
|
6566 |
Recreates tables by calling mysql_alter_table().
|
|
6567 |
||
6568 |
SYNOPSIS
|
|
6569 |
mysql_recreate_table()
|
|
6570 |
thd Thread handler
|
|
6571 |
tables Tables to recreate
|
|
6572 |
||
6573 |
RETURN
|
|
6574 |
Like mysql_alter_table().
|
|
6575 |
*/
|
|
6576 |
bool mysql_recreate_table(THD *thd, TABLE_LIST *table_list) |
|
6577 |
{
|
|
6578 |
HA_CREATE_INFO create_info; |
|
6579 |
Alter_info alter_info; |
|
6580 |
||
6581 |
DBUG_ENTER("mysql_recreate_table"); |
|
6582 |
DBUG_ASSERT(!table_list->next_global); |
|
6583 |
/*
|
|
6584 |
table_list->table has been closed and freed. Do not reference
|
|
6585 |
uninitialized data. open_tables() could fail.
|
|
6586 |
*/
|
|
6587 |
table_list->table= NULL; |
|
6588 |
||
6589 |
bzero((char*) &create_info, sizeof(create_info)); |
|
6590 |
create_info.row_type=ROW_TYPE_NOT_USED; |
|
6591 |
create_info.default_table_charset=default_charset_info; |
|
6592 |
/* Force alter table to recreate table */
|
|
6593 |
alter_info.flags= (ALTER_CHANGE_COLUMN | ALTER_RECREATE); |
|
6594 |
DBUG_RETURN(mysql_alter_table(thd, NullS, NullS, &create_info, |
|
6595 |
table_list, &alter_info, 0, |
|
6596 |
(ORDER *) 0, 0)); |
|
6597 |
}
|
|
6598 |
||
6599 |
||
6600 |
bool mysql_checksum_table(THD *thd, TABLE_LIST *tables, |
|
6601 |
HA_CHECK_OPT *check_opt) |
|
6602 |
{
|
|
6603 |
TABLE_LIST *table; |
|
6604 |
List<Item> field_list; |
|
6605 |
Item *item; |
|
6606 |
Protocol *protocol= thd->protocol; |
|
6607 |
DBUG_ENTER("mysql_checksum_table"); |
|
6608 |
||
6609 |
field_list.push_back(item = new Item_empty_string("Table", NAME_LEN*2)); |
|
6610 |
item->maybe_null= 1; |
|
6611 |
field_list.push_back(item= new Item_int("Checksum", (longlong) 1, |
|
6612 |
MY_INT64_NUM_DECIMAL_DIGITS)); |
|
6613 |
item->maybe_null= 1; |
|
6614 |
if (protocol->send_fields(&field_list, |
|
6615 |
Protocol::SEND_NUM_ROWS | Protocol::SEND_EOF)) |
|
6616 |
DBUG_RETURN(TRUE); |
|
6617 |
||
6618 |
/* Open one table after the other to keep lock time as short as possible. */
|
|
6619 |
for (table= tables; table; table= table->next_local) |
|
6620 |
{
|
|
6621 |
char table_name[NAME_LEN*2+2]; |
|
6622 |
TABLE *t; |
|
6623 |
||
6624 |
strxmov(table_name, table->db ,".", table->table_name, NullS); |
|
6625 |
||
6626 |
t= table->table= open_n_lock_single_table(thd, table, TL_READ); |
|
6627 |
thd->clear_error(); // these errors shouldn't get client |
|
6628 |
||
6629 |
protocol->prepare_for_resend(); |
|
6630 |
protocol->store(table_name, system_charset_info); |
|
6631 |
||
6632 |
if (!t) |
|
6633 |
{
|
|
6634 |
/* Table didn't exist */
|
|
6635 |
protocol->store_null(); |
|
6636 |
thd->clear_error(); |
|
6637 |
}
|
|
6638 |
else
|
|
6639 |
{
|
|
6640 |
if (t->file->ha_table_flags() & HA_HAS_CHECKSUM && |
|
6641 |
!(check_opt->flags & T_EXTEND)) |
|
6642 |
protocol->store((ulonglong)t->file->checksum()); |
|
6643 |
else if (!(t->file->ha_table_flags() & HA_HAS_CHECKSUM) && |
|
6644 |
(check_opt->flags & T_QUICK)) |
|
6645 |
protocol->store_null(); |
|
6646 |
else
|
|
6647 |
{
|
|
6648 |
/* calculating table's checksum */
|
|
6649 |
ha_checksum crc= 0; |
|
6650 |
uchar null_mask=256 - (1 << t->s->last_null_bit_pos); |
|
6651 |
||
6652 |
t->use_all_columns(); |
|
6653 |
||
6654 |
if (t->file->ha_rnd_init(1)) |
|
6655 |
protocol->store_null(); |
|
6656 |
else
|
|
6657 |
{
|
|
6658 |
for (;;) |
|
6659 |
{
|
|
6660 |
ha_checksum row_crc= 0; |
|
6661 |
int error= t->file->rnd_next(t->record[0]); |
|
6662 |
if (unlikely(error)) |
|
6663 |
{
|
|
6664 |
if (error == HA_ERR_RECORD_DELETED) |
|
6665 |
continue; |
|
6666 |
break; |
|
6667 |
}
|
|
6668 |
if (t->s->null_bytes) |
|
6669 |
{
|
|
6670 |
/* fix undefined null bits */
|
|
6671 |
t->record[0][t->s->null_bytes-1] |= null_mask; |
|
6672 |
if (!(t->s->db_create_options & HA_OPTION_PACK_RECORD)) |
|
6673 |
t->record[0][0] |= 1; |
|
6674 |
||
6675 |
row_crc= my_checksum(row_crc, t->record[0], t->s->null_bytes); |
|
6676 |
}
|
|
6677 |
||
6678 |
for (uint i= 0; i < t->s->fields; i++ ) |
|
6679 |
{
|
|
6680 |
Field *f= t->field[i]; |
|
6681 |
if ((f->type() == MYSQL_TYPE_BLOB) || |
|
6682 |
(f->type() == MYSQL_TYPE_VARCHAR)) |
|
6683 |
{
|
|
6684 |
String tmp; |
|
6685 |
f->val_str(&tmp); |
|
6686 |
row_crc= my_checksum(row_crc, (uchar*) tmp.ptr(), tmp.length()); |
|
6687 |
}
|
|
6688 |
else
|
|
6689 |
row_crc= my_checksum(row_crc, f->ptr, |
|
6690 |
f->pack_length()); |
|
6691 |
}
|
|
6692 |
||
6693 |
crc+= row_crc; |
|
6694 |
}
|
|
6695 |
protocol->store((ulonglong)crc); |
|
6696 |
t->file->ha_rnd_end(); |
|
6697 |
}
|
|
6698 |
}
|
|
6699 |
thd->clear_error(); |
|
6700 |
close_thread_tables(thd); |
|
6701 |
table->table=0; // For query cache |
|
6702 |
}
|
|
6703 |
if (protocol->write()) |
|
6704 |
goto err; |
|
6705 |
}
|
|
6706 |
||
6707 |
my_eof(thd); |
|
6708 |
DBUG_RETURN(FALSE); |
|
6709 |
||
6710 |
err: |
|
6711 |
close_thread_tables(thd); // Shouldn't be needed |
|
6712 |
if (table) |
|
6713 |
table->table=0; |
|
6714 |
DBUG_RETURN(TRUE); |
|
6715 |
}
|
|
6716 |
||
6717 |
static bool check_engine(THD *thd, const char *table_name, |
|
6718 |
HA_CREATE_INFO *create_info) |
|
6719 |
{
|
|
6720 |
handlerton **new_engine= &create_info->db_type; |
|
6721 |
handlerton *req_engine= *new_engine; |
|
6722 |
bool no_substitution= 1; |
|
6723 |
if (!(*new_engine= ha_checktype(thd, ha_legacy_type(req_engine), |
|
6724 |
no_substitution, 1))) |
|
6725 |
return TRUE; |
|
6726 |
||
6727 |
if (req_engine && req_engine != *new_engine) |
|
6728 |
{
|
|
6729 |
push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_NOTE, |
|
6730 |
ER_WARN_USING_OTHER_HANDLER, |
|
6731 |
ER(ER_WARN_USING_OTHER_HANDLER), |
|
6732 |
ha_resolve_storage_engine_name(*new_engine), |
|
6733 |
table_name); |
|
6734 |
}
|
|
6735 |
if (create_info->options & HA_LEX_CREATE_TMP_TABLE && |
|
6736 |
ha_check_storage_engine_flag(*new_engine, HTON_TEMPORARY_NOT_SUPPORTED)) |
|
6737 |
{
|
|
6738 |
if (create_info->used_fields & HA_CREATE_USED_ENGINE) |
|
6739 |
{
|
|
6740 |
my_error(ER_ILLEGAL_HA_CREATE_OPTION, MYF(0), |
|
6741 |
ha_resolve_storage_engine_name(*new_engine), "TEMPORARY"); |
|
6742 |
*new_engine= 0; |
|
6743 |
return TRUE; |
|
6744 |
}
|
|
6745 |
*new_engine= myisam_hton; |
|
6746 |
}
|
|
6747 |
return FALSE; |
|
6748 |
}
|