~drizzle-trunk/drizzle/development

/* Copyright (C) 2000-2003 MySQL AB

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; version 2 of the License.

   This program is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program; if not, write to the Free Software

   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */

/**

  @file

  @details

  Mostly this file is used in the server. But a little part of it is used in

  mysqlbinlog too (definition of SELECT_DISTINCT and others).

  The consequence is that 90% of the file is wrapped in \#ifndef MYSQL_CLIENT,

  except the part which must be in the server and in the client.

*/

#ifndef DRIZZLE_SERVER_MYSQL_PRIV_H

#define DRIZZLE_SERVER_MYSQL_PRIV_H

#ifndef MYSQL_CLIENT

#include <drizzled/global.h>

#include <drizzled/version.h>

#include <mysys/my_sys.h>

#include <libdrizzle/my_time.h>

#include <mystrings/m_string.h>

#include <mysys/hash.h>

#include <signal.h>

#include <mysys/thr_lock.h>

#include <drizzled/error.h>

#include <drizzled/base.h>			                /* Needed by field.h */

#include <mysys/queues.h>

#include <drizzled/sql_bitmap.h>                /* Custom bitmap API */

#include "sql_array.h"

#include "sql_plugin.h"

#include "scheduler.h"

#ifdef HAVE_DTRACE

#define _DTRACE_VERSION 1

#endif

#include "probes.h"

#include <netdb.h>

/**

  Query type constants.

  QT_ORDINARY -- ordinary SQL query.

  QT_IS -- SQL query to be shown in INFORMATION_SCHEMA (in utf8 and without

  character set introducers).

*/

enum enum_query_type

{

  QT_ORDINARY,

  QT_IS

};

/* TODO convert all these three maps to Bitmap classes */

typedef uint64_t table_map;          /* Used for table bits in join */

#if MAX_INDEXES <= 64

typedef Bitmap<64>  key_map;          /* Used for finding keys */

#else

typedef Bitmap<((MAX_INDEXES+7)/8*8)> key_map; /* Used for finding keys */

#endif

typedef uint32_t nesting_map;  /* Used for flags of nesting constructs */

/*

  Used to identify NESTED_JOIN structures within a join (applicable only to

  structures that have not been simplified away and embed more the one

  element)

*/

typedef uint64_t nested_join_map;

/* query_id */

typedef uint64_t query_id_t;

extern query_id_t global_query_id;

/* increment query_id and return it.  */

inline query_id_t next_query_id() { return global_query_id++; }

/* useful constants */

extern const key_map key_map_empty;

extern key_map key_map_full;          /* Should be threaded as const */

extern const char *primary_key_name;

#include <libdrizzle/drizzle_com.h>

#include <vio/violite.h>

#include "unireg.h"

#include <drizzled/sql_alloc.h>

#define PREV_BITS(type,A)	((type) (((type) 1 << (A)) -1))

#define all_bits_set(A,B) ((A) & (B) != (B))

extern CHARSET_INFO *system_charset_info, *files_charset_info ;

extern CHARSET_INFO *national_charset_info, *table_alias_charset;

enum Derivation

{

  DERIVATION_IGNORABLE= 5,

  DERIVATION_COERCIBLE= 4,

  DERIVATION_SYSCONST= 3,

  DERIVATION_IMPLICIT= 2,

  DERIVATION_NONE= 1,

  DERIVATION_EXPLICIT= 0

};

#include <drizzled/sql_locale.h>

#include <drizzled/object_creation_ctx.h>

/**

  Opening modes for open_temporary_table and open_table_from_share

*/

enum open_table_mode

{

  OTM_OPEN= 0,

  OTM_CREATE= 1,

  OTM_ALTER= 2

};

/***************************************************************************

  Configuration parameters

****************************************************************************/

#define ACL_CACHE_SIZE		256

#define MAX_PASSWORD_LENGTH	32

#define HOST_CACHE_SIZE		128

#define MAX_ACCEPT_RETRY	10	// Test accept this many times

#define MAX_FIELDS_BEFORE_HASH	32

#define USER_VARS_HASH_SIZE     16

#define TABLE_OPEN_CACHE_MIN    64

#define TABLE_OPEN_CACHE_DEFAULT 64

/* 

 Value of 9236 discovered through binary search 2006-09-26 on Ubuntu Dapper

 Drake, libc6 2.3.6-0ubuntu2, Linux kernel 2.6.15-27-686, on x86.  (Added 

 100 bytes as reasonable buffer against growth and other environments'

 requirements.)

 Feel free to raise this by the smallest amount you can to get the

 "execution_constants" test to pass.

 */

#define STACK_MIN_SIZE          12000   ///< Abort if less stack during eval.

#define STACK_MIN_SIZE_FOR_OPEN 1024*80

#define STACK_BUFF_ALLOC        352     ///< For stack overrun checks

#ifndef MYSQLD_NET_RETRY_COUNT

#define MYSQLD_NET_RETRY_COUNT  10	///< Abort read after this many int.

#endif

#define TEMP_POOL_SIZE          128

#define QUERY_ALLOC_BLOCK_SIZE		8192

#define QUERY_ALLOC_PREALLOC_SIZE   	8192

#define TRANS_ALLOC_BLOCK_SIZE		4096

#define TRANS_ALLOC_PREALLOC_SIZE	4096

#define RANGE_ALLOC_BLOCK_SIZE		4096

#define ACL_ALLOC_BLOCK_SIZE		1024

#define UDF_ALLOC_BLOCK_SIZE		1024

#define TABLE_ALLOC_BLOCK_SIZE		1024

#define BDB_LOG_ALLOC_BLOCK_SIZE	1024

#define WARN_ALLOC_BLOCK_SIZE		2048

#define WARN_ALLOC_PREALLOC_SIZE	1024

#define PROFILE_ALLOC_BLOCK_SIZE  2048

#define PROFILE_ALLOC_PREALLOC_SIZE 1024

/*

  The following parameters is to decide when to use an extra cache to

  optimise seeks when reading a big table in sorted order

*/

#define MIN_FILE_LENGTH_TO_USE_ROW_CACHE (10L*1024*1024)

#define MIN_ROWS_TO_USE_TABLE_CACHE	 100

#define MIN_ROWS_TO_USE_BULK_INSERT	 100

/**

  The following is used to decide if MySQL should use table scanning

  instead of reading with keys.  The number says how many evaluation of the

  WHERE clause is comparable to reading one extra row from a table.

*/

#define TIME_FOR_COMPARE   5	// 5 compares == one read

/**

  Number of comparisons of table rowids equivalent to reading one row from a 

  table.

*/

#define TIME_FOR_COMPARE_ROWID  (TIME_FOR_COMPARE*2)

/*

  For sequential disk seeks the cost formula is:

    DISK_SEEK_BASE_COST + DISK_SEEK_PROP_COST * #blocks_to_skip  

  The cost of average seek 

    DISK_SEEK_BASE_COST + DISK_SEEK_PROP_COST*BLOCKS_IN_AVG_SEEK =1.0.

*/

#define DISK_SEEK_BASE_COST ((double)0.9)

#define BLOCKS_IN_AVG_SEEK  128

#define DISK_SEEK_PROP_COST ((double)0.1/BLOCKS_IN_AVG_SEEK)

/**

  Number of rows in a reference table when refereed through a not unique key.

  This value is only used when we don't know anything about the key

  distribution.

*/

#define MATCHING_ROWS_IN_OTHER_TABLE 10

/** Don't pack string keys shorter than this (if PACK_KEYS=1 isn't used). */

#define KEY_DEFAULT_PACK_LENGTH 8

/** Characters shown for the command in 'show processlist'. */

#define PROCESS_LIST_WIDTH 100

/* Characters shown for the command in 'information_schema.processlist' */

#define PROCESS_LIST_INFO_WIDTH 65535

#define PRECISION_FOR_DOUBLE 53

#define PRECISION_FOR_FLOAT  24

/*

  Default time to wait before aborting a new client connection

  that does not respond to "initial server greeting" timely

*/

#define CONNECT_TIMEOUT		10

/* The following can also be changed from the command line */

#define DEFAULT_CONCURRENCY	10

#define FLUSH_TIME		0		/**< Don't flush tables */

#define MAX_CONNECT_ERRORS	10		///< errors before disabling host

#define INTERRUPT_PRIOR 10

#define CONNECT_PRIOR	9

#define WAIT_PRIOR	8

#define QUERY_PRIOR	6

	/* Bits from testflag */

#define TEST_PRINT_CACHED_TABLES 1

#define TEST_NO_KEY_GROUP	 2

#define TEST_MIT_THREAD		4

#define TEST_BLOCKING		8

#define TEST_KEEP_TMP_TABLES	16

#define TEST_READCHECK		64	/**< Force use of readcheck */

#define TEST_NO_EXTRA		128

#define TEST_CORE_ON_SIGNAL	256	/**< Give core if signal */

#define TEST_NO_STACKTRACE	512

#define TEST_SIGINT		1024	/**< Allow sigint on threads */

#define TEST_SYNCHRONIZATION    2048    /**< get server to do sleep in

                                           some places */

#endif

/*

   This is included in the server and in the client.

   Options for select set by the yacc parser (stored in lex->options).

   XXX:

   log_event.h defines OPTIONS_WRITTEN_TO_BIN_LOG to specify what THD

   options list are written into binlog. These options can NOT change their

   values, or it will break replication between version.

   context is encoded as following:

   SELECT - SELECT_LEX_NODE::options

   THD    - THD::options

   intern - neither. used only as

            func(..., select_node->options | thd->options | OPTION_XXX, ...)

   TODO: separate three contexts above, move them to separate bitfields.

*/

#define SELECT_DISTINCT         (1ULL << 0)     // SELECT, user

#define SELECT_STRAIGHT_JOIN    (1ULL << 1)     // SELECT, user

#define SELECT_DESCRIBE         (1ULL << 2)     // SELECT, user

#define SELECT_SMALL_RESULT     (1ULL << 3)     // SELECT, user

#define SELECT_BIG_RESULT       (1ULL << 4)     // SELECT, user

#define OPTION_FOUND_ROWS       (1ULL << 5)     // SELECT, user

#define SELECT_NO_JOIN_CACHE    (1ULL << 7)     // intern

#define OPTION_BIG_TABLES       (1ULL << 8)     // THD, user

#define OPTION_BIG_SELECTS      (1ULL << 9)     // THD, user

#define OPTION_LOG_OFF          (1ULL << 10)    // THD, user

#define OPTION_QUOTE_SHOW_CREATE (1ULL << 11)   // THD, user, unused

#define TMP_TABLE_ALL_COLUMNS   (1ULL << 12)    // SELECT, intern

#define OPTION_WARNINGS         (1ULL << 13)    // THD, user

#define OPTION_AUTO_IS_NULL     (1ULL << 14)    // THD, user, binlog

#define OPTION_FOUND_COMMENT    (1ULL << 15)    // SELECT, intern, parser

#define OPTION_SAFE_UPDATES     (1ULL << 16)    // THD, user

#define OPTION_BUFFER_RESULT    (1ULL << 17)    // SELECT, user

#define OPTION_BIN_LOG          (1ULL << 18)    // THD, user

#define OPTION_NOT_AUTOCOMMIT   (1ULL << 19)    // THD, user

#define OPTION_BEGIN            (1ULL << 20)    // THD, intern

#define OPTION_TABLE_LOCK       (1ULL << 21)    // THD, intern

#define OPTION_QUICK            (1ULL << 22)    // SELECT (for DELETE)

#define OPTION_KEEP_LOG         (1ULL << 23)    // THD, user

/* The following is used to detect a conflict with DISTINCT */

#define SELECT_ALL              (1ULL << 24)    // SELECT, user, parser

/** The following can be set when importing tables in a 'wrong order'

   to suppress foreign key checks */

#define OPTION_NO_FOREIGN_KEY_CHECKS    (1ULL << 26) // THD, user, binlog

/** The following speeds up inserts to InnoDB tables by suppressing unique

   key checks in some cases */

#define OPTION_RELAXED_UNIQUE_CHECKS    (1ULL << 27) // THD, user, binlog

#define SELECT_NO_UNLOCK                (1ULL << 28) // SELECT, intern

#define OPTION_SCHEMA_TABLE             (1ULL << 29) // SELECT, intern

/** Flag set if setup_tables already done */

#define OPTION_SETUP_TABLES_DONE        (1ULL << 30) // intern

/** If not set then the thread will ignore all warnings with level notes. */

#define OPTION_SQL_NOTES                (1ULL << 31) // THD, user

/**

  Force the used temporary table to be a MyISAM table (because we will use

  fulltext functions when reading from it.

*/

#define TMP_TABLE_FORCE_MYISAM          (1ULL << 32)

#define OPTION_PROFILING                (1ULL << 33)

/*

  Dont report errors for individual rows,

  But just report error on commit (or read ofcourse)

*/

#define OPTION_ALLOW_BATCH              (1ULL << 33) // THD, intern (slave)

/**

  Maximum length of time zone name that we support

  (Time zone name is char(64) in db). mysqlbinlog needs it.

*/

#define MAX_TIME_ZONE_NAME_LENGTH       (NAME_LEN + 1)

/* The rest of the file is included in the server only */

#ifndef MYSQL_CLIENT

/* Bits for different SQL modes modes (including ANSI mode) */

#define MODE_REAL_AS_FLOAT              1

#define MODE_PIPES_AS_CONCAT            2

#define MODE_ANSI_QUOTES                4

#define MODE_IGNORE_SPACE		8

#define MODE_NOT_USED			16

#define MODE_ONLY_FULL_GROUP_BY		32

#define MODE_NO_UNSIGNED_SUBTRACTION	64

#define MODE_NO_DIR_IN_CREATE		128

#define MODE_POSTGRESQL			256

#define MODE_ORACLE			512

#define MODE_MSSQL			1024

#define MODE_DB2			2048

#define MODE_MAXDB			4096

#define MODE_NO_KEY_OPTIONS             8192

#define MODE_NO_TABLE_OPTIONS           16384

#define MODE_NO_FIELD_OPTIONS           32768

#define MODE_MYSQL323                   65536L

#define MODE_MYSQL40                    (MODE_MYSQL323*2)

#define MODE_ANSI	                (MODE_MYSQL40*2)

#define MODE_NO_AUTO_VALUE_ON_ZERO      (MODE_ANSI*2)

#define MODE_NO_BACKSLASH_ESCAPES       (MODE_NO_AUTO_VALUE_ON_ZERO*2)

#define MODE_STRICT_TRANS_TABLES	(MODE_NO_BACKSLASH_ESCAPES*2)

#define MODE_STRICT_ALL_TABLES		(MODE_STRICT_TRANS_TABLES*2)

#define MODE_NO_ZERO_IN_DATE		(MODE_STRICT_ALL_TABLES*2)

#define MODE_NO_ZERO_DATE		(MODE_NO_ZERO_IN_DATE*2)

#define MODE_INVALID_DATES		(MODE_NO_ZERO_DATE*2)

#define MODE_ERROR_FOR_DIVISION_BY_ZERO (MODE_INVALID_DATES*2)

#define MODE_TRADITIONAL		(MODE_ERROR_FOR_DIVISION_BY_ZERO*2)

#define MODE_NO_AUTO_CREATE_USER	(MODE_TRADITIONAL*2)

#define MODE_HIGH_NOT_PRECEDENCE	(MODE_NO_AUTO_CREATE_USER*2)

#define MODE_NO_ENGINE_SUBSTITUTION     (MODE_HIGH_NOT_PRECEDENCE*2)

#define MODE_PAD_CHAR_TO_FULL_LENGTH    (1ULL << 31)

/* @@optimizer_switch flags */

#define OPTIMIZER_SWITCH_NO_MATERIALIZATION 1

#define OPTIMIZER_SWITCH_NO_SEMIJOIN 2

/*

  Replication uses 8 bytes to store SQL_MODE in the binary log. The day you

  use strictly more than 64 bits by adding one more define above, you should

  contact the replication team because the replication code should then be

  updated (to store more bytes on disk).

  NOTE: When adding new SQL_MODE types, make sure to also add them to

  the scripts used for creating the MySQL system tables

  in scripts/mysql_system_tables.sql and scripts/mysql_system_tables_fix.sql

*/

#define RAID_BLOCK_SIZE 1024

#define MY_CHARSET_BIN_MB_MAXLEN 1

// uncachable cause

#define UNCACHEABLE_DEPENDENT   1

#define UNCACHEABLE_RAND        2

#define UNCACHEABLE_SIDEEFFECT	4

/// forcing to save JOIN for explain

#define UNCACHEABLE_EXPLAIN     8

/** Don't evaluate subqueries in prepare even if they're not correlated */

#define UNCACHEABLE_PREPARE    16

/* For uncorrelated SELECT in an UNION with some correlated SELECTs */

#define UNCACHEABLE_UNITED     32

/* Used to check GROUP BY list in the MODE_ONLY_FULL_GROUP_BY mode */

#define UNDEF_POS (-1)

/* BINLOG_DUMP options */

#define BINLOG_DUMP_NON_BLOCK   1

/* sql_show.cc:show_log_files() */

#define SHOW_LOG_STATUS_FREE "FREE"

#define SHOW_LOG_STATUS_INUSE "IN USE"

/* Options to add_table_to_list() */

#define TL_OPTION_UPDATING	1

#define TL_OPTION_FORCE_INDEX	2

#define TL_OPTION_IGNORE_LEAVES 4

#define TL_OPTION_ALIAS         8

/* Some portable defines */

#define portable_sizeof_char_ptr 8

#define tmp_file_prefix "#sql"			/**< Prefix for tmp tables */

#define tmp_file_prefix_length 4

/* Flags for calc_week() function.  */

#define WEEK_MONDAY_FIRST    1

#define WEEK_YEAR            2

#define WEEK_FIRST_WEEKDAY   4

#define STRING_BUFFER_USUAL_SIZE 80

/*

  Some defines for exit codes for ::is_equal class functions.

*/

#define IS_EQUAL_NO 0

#define IS_EQUAL_YES 1

#define IS_EQUAL_PACK_LENGTH 2

enum enum_parsing_place

{

  NO_MATTER

  , IN_HAVING

  , SELECT_LIST

  , IN_WHERE

  , IN_ON

};

enum enum_mysql_completiontype {

  ROLLBACK_RELEASE= -2

  , ROLLBACK= 1

  , ROLLBACK_AND_CHAIN= 7

  , COMMIT_RELEASE= -1

  , COMMIT= 0

  , COMMIT_AND_CHAIN= 6

};

enum enum_check_fields

{

  CHECK_FIELD_IGNORE

  , CHECK_FIELD_WARN

  , CHECK_FIELD_ERROR_FOR_NULL

};

enum enum_var_type

{

  OPT_DEFAULT= 0

  , OPT_SESSION

  , OPT_GLOBAL

};

/* Forward declarations */

struct TABLE_LIST;

class String;

struct st_table;

class THD;

class user_var_entry;

class Security_context;

#ifdef MYSQL_SERVER

class Comp_creator;

typedef Comp_creator* (*chooser_compare_func_creator)(bool invert);

#endif

#define thd_proc_info(thd, msg)  set_thd_proc_info(thd, msg, __func__, __FILE__, __LINE__)

extern pthread_key(THD*, THR_THD);

inline THD *_current_thd(void)

{

  return (THD *)pthread_getspecific(THR_THD);

}

#define current_thd _current_thd()

/** 

  The meat of thd_proc_info(THD*, char*), a macro that packs the last

  three calling-info parameters. 

*/

extern "C"

const char *set_thd_proc_info(THD *thd, const char *info, 

                              const char *calling_func, 

                              const char *calling_file, 

                              const unsigned int calling_line);

/*

  External variables

*/

extern ulong server_id;

#include <drizzled/sql_string.h>

#include "sql_list.h"

#include "sql_map.h"

#include "my_decimal.h"

#include "handler.h"

#include "table.h"

#include "sql_error.h"

#include "field.h"

#include "protocol.h"

#include "sql_udf.h"

#include "item.h"

extern my_decimal decimal_zero;

/** @TODO Find a good header to put this guy... */

void close_thread_tables(THD *thd);

#include <drizzled/sql_parse.h>

#include "sql_class.h"

#include "slave.h" // for tables_ok(), rpl_filter

#include "tztime.h"

#ifdef MYSQL_SERVER

#include "opt_range.h"

/*

  Error injector Macros to enable easy testing of recovery after failures

  in various error cases.

*/

#ifndef ERROR_INJECT_SUPPORT

#define ERROR_INJECT(x) 0

#define ERROR_INJECT_ACTION(x,action) 0

#define ERROR_INJECT_CRASH(x) 0

#define ERROR_INJECT_VALUE(x) 0

#define ERROR_INJECT_VALUE_ACTION(x,action) 0

#define ERROR_INJECT_VALUE_CRASH(x) 0

#define SET_ERROR_INJECT_VALUE(x)

#else

inline bool check_and_unset_keyword(const char *dbug_str)

{

  const char *extra_str= "-d,";

  char total_str[200];

  if (_db_strict_keyword_ (dbug_str))

  {

    strxmov(total_str, extra_str, dbug_str, NullS);

    return 1;

  }

  return 0;

}

inline bool

check_and_unset_inject_value(int value)

{

  THD *thd= current_thd;

  if (thd->error_inject_value == (uint)value)

  {

    thd->error_inject_value= 0;

    return 1;

  }

  return 0;

}

/*

  ERROR INJECT MODULE:

  --------------------

  These macros are used to insert macros from the application code.

  The event that activates those error injections can be activated

  from SQL by using:

  SET SESSION dbug=+d,code;

  After the error has been injected, the macros will automatically

  remove the debug code, thus similar to using:

  SET SESSION dbug=-d,code

  from SQL.

  ERROR_INJECT_CRASH will inject a crash of the MySQL Server if code

  is set when macro is called. ERROR_INJECT_CRASH can be used in

  if-statements, it will always return false unless of course it

  crashes in which case it doesn't return at all.

  ERROR_INJECT_ACTION will inject the action specified in the action

  parameter of the macro, before performing the action the code will

  be removed such that no more events occur. ERROR_INJECT_ACTION

  can also be used in if-statements and always returns FALSE.

  ERROR_INJECT can be used in a normal if-statement, where the action

  part is performed in the if-block. The macro returns TRUE if the

  error was activated and otherwise returns FALSE. If activated the

  code is removed.

  Sometimes it is necessary to perform error inject actions as a serie

  of events. In this case one can use one variable on the THD object.

  Thus one sets this value by using e.g. SET_ERROR_INJECT_VALUE(100).

  Then one can later test for it by using ERROR_INJECT_CRASH_VALUE,

  ERROR_INJECT_ACTION_VALUE and ERROR_INJECT_VALUE. This have the same

  behaviour as the above described macros except that they use the

  error inject value instead of a code used by debug macros.

*/

#define SET_ERROR_INJECT_VALUE(x) \

  current_thd->error_inject_value= (x)

#define ERROR_INJECT_ACTION(code, action) \

  (check_and_unset_keyword(code) ? ((action), 0) : 0)

#define ERROR_INJECT(code) \

  check_and_unset_keyword(code)

#define ERROR_INJECT_VALUE(value) \

  check_and_unset_inject_value(value)

#define ERROR_INJECT_VALUE_ACTION(value,action) \

  (check_and_unset_inject_value(value) ? (action) : 0)

#define ERROR_INJECT_VALUE_CRASH(value) \

  ERROR_INJECT_VALUE_ACTION(value, (abort(), 0))

#endif

void write_bin_log(THD *thd, bool clear_error,

                   char const *query, ulong query_length);

/* sql_connect.cc */

int check_user(THD *thd, enum enum_server_command command, 

	       const char *passwd, uint passwd_len, const char *db,

	       bool check_count);

pthread_handler_t handle_one_connection(void *arg);

bool init_new_connection_handler_thread();

void time_out_user_resource_limits(THD *thd, USER_CONN *uc);

void decrease_user_connections(USER_CONN *uc);

void thd_init_client_charset(THD *thd, uint cs_number);

bool setup_connection_thread_globals(THD *thd);

bool login_connection(THD *thd);

void prepare_new_connection_state(THD* thd);

void end_connection(THD *thd);

int mysql_create_db(THD *thd, char *db, HA_CREATE_INFO *create, bool silent);

bool mysql_alter_db(THD *thd, const char *db, HA_CREATE_INFO *create);

bool mysql_rm_db(THD *thd,char *db,bool if_exists, bool silent);

void mysql_binlog_send(THD* thd, char* log_ident, my_off_t pos, ushort flags);

void mysql_client_binlog_statement(THD *thd);

bool mysql_rm_table(THD *thd,TABLE_LIST *tables, bool if_exists,

                    bool drop_temporary);

int mysql_rm_table_part2(THD *thd, TABLE_LIST *tables, bool if_exists,

                         bool drop_temporary, bool drop_view, bool log_query);

bool quick_rm_table(handlerton *base,const char *db,

                    const char *table_name, uint flags);

void close_cached_table(THD *thd, TABLE *table);

bool mysql_rename_tables(THD *thd, TABLE_LIST *table_list, bool silent);

bool do_rename(THD *thd, TABLE_LIST *ren_table, char *new_db,

                      char *new_table_name, char *new_table_alias,

                      bool skip_error);

bool mysql_change_db(THD *thd, const LEX_STRING *new_db_name,

                     bool force_switch);

bool mysql_opt_change_db(THD *thd,

                         const LEX_STRING *new_db_name,

                         LEX_STRING *saved_db_name,

                         bool force_switch,

                         bool *cur_db_changed);

void mysql_parse(THD *thd, const char *inBuf, uint length,

                 const char ** semicolon);

bool mysql_test_parse_for_slave(THD *thd,char *inBuf,uint length);

bool is_update_query(enum enum_sql_command command);

bool alloc_query(THD *thd, const char *packet, uint packet_length);

void mysql_init_select(LEX *lex);

void mysql_reset_thd_for_next_command(THD *thd);

bool mysql_new_select(LEX *lex, bool move_down);

void create_select_for_variable(const char *var_name);

void mysql_init_multi_delete(LEX *lex);

bool multi_delete_set_locks_and_link_aux_tables(LEX *lex);

void init_max_user_conn(void);

void init_update_queries(void);

void free_max_user_conn(void);

pthread_handler_t handle_bootstrap(void *arg);

int mysql_execute_command(THD *thd);

bool do_command(THD *thd);

bool dispatch_command(enum enum_server_command command, THD *thd,

		      char* packet, uint packet_length);

void log_slow_statement(THD *thd);

bool check_dup(const char *db, const char *name, TABLE_LIST *tables);

bool compare_record(TABLE *table);

bool append_file_to_dir(THD *thd, const char **filename_ptr, 

                        const char *table_name);

void wait_while_table_is_used(THD *thd, TABLE *table,

                              enum ha_extra_function function);

bool table_cache_init(void);

void table_cache_free(void);

bool table_def_init(void);

void table_def_free(void);

void assign_new_table_id(TABLE_SHARE *share);

uint cached_open_tables(void);

uint cached_table_definitions(void);

void kill_mysql(void);

void close_connection(THD *thd, uint errcode, bool lock);

bool reload_cache(THD *thd, ulong options, TABLE_LIST *tables, bool *write_to_binlog);

bool check_table_access(THD *thd, ulong want_access, TABLE_LIST *tables,

                        bool no_errors,

                        bool any_combination_of_privileges_will_do,

                        uint number);

#endif /* MYSQL_SERVER */

#if defined MYSQL_SERVER || defined INNODB_COMPATIBILITY_HOOKS

bool check_global_access(THD *thd, ulong want_access);

#endif /* MYSQL_SERVER || INNODB_COMPATIBILITY_HOOKS */

#ifdef MYSQL_SERVER

/*

  General routine to change field->ptr of a NULL-terminated array of Field

  objects. Useful when needed to call val_int, val_str or similar and the

  field data is not in table->record[0] but in some other structure.

  set_key_field_ptr changes all fields of an index using a key_info object.

  All methods presume that there is at least one field to change.

*/

void set_field_ptr(Field **ptr, const uchar *new_buf, const uchar *old_buf);

void set_key_field_ptr(KEY *key_info, const uchar *new_buf,

                       const uchar *old_buf);

bool mysql_checksum_table(THD* thd, TABLE_LIST* table_list,

                          HA_CHECK_OPT* check_opt);

bool mysql_check_table(THD* thd, TABLE_LIST* table_list,

                       HA_CHECK_OPT* check_opt);

bool mysql_repair_table(THD* thd, TABLE_LIST* table_list,

                        HA_CHECK_OPT* check_opt);

bool mysql_analyze_table(THD* thd, TABLE_LIST* table_list,

                         HA_CHECK_OPT* check_opt);

bool mysql_optimize_table(THD* thd, TABLE_LIST* table_list,

                          HA_CHECK_OPT* check_opt);

bool mysql_assign_to_keycache(THD* thd, TABLE_LIST* table_list,

                              LEX_STRING *key_cache_name);

bool mysql_preload_keys(THD* thd, TABLE_LIST* table_list);

int reassign_keycache_tables(THD* thd, KEY_CACHE *src_cache,

                             KEY_CACHE *dst_cache);

TABLE *create_virtual_tmp_table(THD *thd, List<Create_field> &field_list);

bool mysql_xa_recover(THD *thd);

bool check_simple_select();

SORT_FIELD * make_unireg_sortorder(ORDER *order, uint *length,

                                  SORT_FIELD *sortorder);

int setup_order(THD *thd, Item **ref_pointer_array, TABLE_LIST *tables,

		List<Item> &fields, List <Item> &all_fields, ORDER *order);

int setup_group(THD *thd, Item **ref_pointer_array, TABLE_LIST *tables,

		List<Item> &fields, List<Item> &all_fields, ORDER *order,

		bool *hidden_group_fields);

bool fix_inner_refs(THD *thd, List<Item> &all_fields, SELECT_LEX *select,

                   Item **ref_pointer_array);

bool handle_select(THD *thd, LEX *lex, select_result *result,

                   ulong setup_tables_done_option);

bool mysql_select(THD *thd, Item ***rref_pointer_array,

                  TABLE_LIST *tables, uint wild_num,  List<Item> &list,

                  COND *conds, uint og_num, ORDER *order, ORDER *group,

                  Item *having, ORDER *proc_param, uint64_t select_type, 

                  select_result *result, SELECT_LEX_UNIT *unit, 

                  SELECT_LEX *select_lex);

void free_underlaid_joins(THD *thd, SELECT_LEX *select);

bool mysql_explain_union(THD *thd, SELECT_LEX_UNIT *unit,

                         select_result *result);

int mysql_explain_select(THD *thd, SELECT_LEX *sl, char const *type,

			 select_result *result);

bool mysql_union(THD *thd, LEX *lex, select_result *result,

                 SELECT_LEX_UNIT *unit, ulong setup_tables_done_option);

bool mysql_handle_derived(LEX *lex, bool (*processor)(THD *thd,

                                                      LEX *lex,

                                                      TABLE_LIST *table));

bool mysql_derived_prepare(THD *thd, LEX *lex, TABLE_LIST *t);

bool mysql_derived_filling(THD *thd, LEX *lex, TABLE_LIST *t);

Field *create_tmp_field(THD *thd, TABLE *table,Item *item, Item::Type type,

			Item ***copy_func, Field **from_field,

                        Field **def_field,

			bool group, bool modify_item,

			bool table_cant_handle_bit_fields,

                        bool make_copy_field,

                        uint convert_blob_length);

void sp_prepare_create_field(THD *thd, Create_field *sql_field);

int prepare_create_field(Create_field *sql_field, 

			 uint *blob_columns, 

			 int *timestamps, int *timestamps_with_niladic,

			 int64_t table_flags);

bool mysql_create_table(THD *thd,const char *db, const char *table_name,

                        HA_CREATE_INFO *create_info,

                        Alter_info *alter_info,

                        bool tmp_table, uint select_field_count);

bool mysql_create_table_no_lock(THD *thd, const char *db,

                                const char *table_name,

                                HA_CREATE_INFO *create_info,

                                Alter_info *alter_info,

                                bool tmp_table, uint select_field_count);

bool mysql_alter_table(THD *thd, char *new_db, char *new_name,

                       HA_CREATE_INFO *create_info,

                       TABLE_LIST *table_list,

                       Alter_info *alter_info,

                       uint order_num, ORDER *order, bool ignore);

bool mysql_recreate_table(THD *thd, TABLE_LIST *table_list);

bool mysql_create_like_table(THD *thd, TABLE_LIST *table,

                             TABLE_LIST *src_table,

                             HA_CREATE_INFO *create_info);

bool mysql_rename_table(handlerton *base, const char *old_db,

                        const char * old_name, const char *new_db,

                        const char * new_name, uint flags);

bool mysql_prepare_update(THD *thd, TABLE_LIST *table_list,

                          Item **conds, uint order_num, ORDER *order);

int mysql_update(THD *thd,TABLE_LIST *tables,List<Item> &fields,

		 List<Item> &values,COND *conds,

		 uint order_num, ORDER *order, ha_rows limit,

		 enum enum_duplicates handle_duplicates, bool ignore);

bool mysql_multi_update(THD *thd, TABLE_LIST *table_list,

                        List<Item> *fields, List<Item> *values,

                        COND *conds, uint64_t options,

                        enum enum_duplicates handle_duplicates, bool ignore,

                        SELECT_LEX_UNIT *unit, SELECT_LEX *select_lex);

bool mysql_prepare_insert(THD *thd, TABLE_LIST *table_list, TABLE *table,

                          List<Item> &fields, List_item *values,

                          List<Item> &update_fields,

                          List<Item> &update_values, enum_duplicates duplic,

                          COND **where, bool select_insert,

                          bool check_fields, bool abort_on_warning);

bool mysql_insert(THD *thd,TABLE_LIST *table,List<Item> &fields,

                  List<List_item> &values, List<Item> &update_fields,

                  List<Item> &update_values, enum_duplicates flag,