118
119
return (*str != '\0');
123
bool drizzled_show_create(Session *session, TableList *table_list, bool is_if_not_exists)
126
String buffer(buff, sizeof(buff), system_charset_info);
128
/* Only one table for now, but VIEW can involve several tables */
129
if (session->openTables(table_list))
131
if (session->is_error())
135
Clear all messages with 'error' level status and
136
issue a warning with 'warning' level status in
137
case of invalid view and last error is ER_VIEW_INVALID
139
drizzle_reset_errors(session, true);
140
session->clear_error();
145
if (store_create_info(table_list, &buffer, is_if_not_exists))
148
List<Item> field_list;
150
field_list.push_back(new Item_empty_string("Table",NAME_CHAR_LEN));
151
// 1024 is for not to confuse old clients
152
field_list.push_back(new Item_empty_string("Create Table",
153
max(buffer.length(),(uint32_t)1024)));
156
if (session->client->sendFields(&field_list))
159
session->client->store(table_list->table->getAlias());
162
session->client->store(buffer.ptr(), buffer.length());
164
if (session->client->flush())
172
Get a CREATE statement for a given database.
174
The database is identified by its name, passed as @c dbname parameter.
175
The name should be encoded using the system character set (UTF8 currently).
177
Resulting statement is stored in the string pointed by @c buffer. The string
178
is emptied first and its character set is set to the system character set.
180
If is_if_not_exists is set, then
181
the resulting CREATE statement contains "IF NOT EXISTS" clause. Other flags
182
in @c create_options are ignored.
184
@param session The current thread instance.
185
@param dbname The name of the database.
186
@param buffer A String instance where the statement is stored.
187
@param create_info If not NULL, the options member influences the resulting
190
@returns true if errors are detected, false otherwise.
193
static bool store_db_create_info(SchemaIdentifier &schema_identifier, string &buffer, bool if_not_exists)
195
message::Schema schema;
197
bool found= plugin::StorageEngine::getSchemaDefinition(schema_identifier, schema);
201
buffer.append("CREATE DATABASE ");
204
buffer.append("IF NOT EXISTS ");
207
buffer.append(schema.name());
210
if (schema.has_collation())
212
buffer.append(" COLLATE = ");
213
buffer.append(schema.collation());
219
bool mysqld_show_create_db(Session &session, SchemaIdentifier &schema_identifier, bool if_not_exists)
221
message::Schema schema_message;
224
if (not plugin::StorageEngine::getSchemaDefinition(schema_identifier, schema_message))
227
This assumes that the only reason for which store_db_create_info()
228
can fail is incorrect database name (which is the case now).
230
my_error(ER_BAD_DB_ERROR, MYF(0), schema_identifier.getSQLPath().c_str());
234
if (not store_db_create_info(schema_identifier, buffer, if_not_exists))
237
This assumes that the only reason for which store_db_create_info()
238
can fail is incorrect database name (which is the case now).
240
my_error(ER_BAD_DB_ERROR, MYF(0), schema_identifier.getSQLPath().c_str());
244
List<Item> field_list;
245
field_list.push_back(new Item_empty_string("Database",NAME_CHAR_LEN));
246
field_list.push_back(new Item_empty_string("Create Database",1024));
248
if (session.client->sendFields(&field_list))
251
session.client->store(schema_message.name());
252
session.client->store(buffer);
254
if (session.client->flush())
122
263
Get the quote character for displaying an identifier.
288
#define LIST_PROCESS_HOST_LEN 64
290
static bool get_field_default_value(Field *timestamp_field,
291
Field *field, String *def_value,
295
bool has_now_default;
298
We are using CURRENT_TIMESTAMP instead of NOW because it is
301
has_now_default= (timestamp_field == field &&
302
field->unireg_check != Field::TIMESTAMP_UN_FIELD);
304
has_default= (field->type() != DRIZZLE_TYPE_BLOB &&
305
!(field->flags & NO_DEFAULT_VALUE_FLAG) &&
306
field->unireg_check != Field::NEXT_NUMBER);
308
def_value->length(0);
312
def_value->append(STRING_WITH_LEN("CURRENT_TIMESTAMP"));
313
else if (!field->is_null())
314
{ // Not null by default
315
char tmp[MAX_FIELD_WIDTH];
316
String type(tmp, sizeof(tmp), field->charset());
317
field->val_str(&type);
321
uint32_t dummy_errors;
322
/* convert to system_charset_info == utf8 */
323
def_val.copy(type.ptr(), type.length(), field->charset(),
324
system_charset_info, &dummy_errors);
326
append_unescaped(def_value, def_val.ptr(), def_val.length());
328
def_value->append(def_val.ptr(), def_val.length());
331
def_value->append(STRING_WITH_LEN("''"));
333
else if (field->maybe_null() && quoted)
334
def_value->append(STRING_WITH_LEN("NULL")); // Null as default
342
Build a CREATE TABLE statement for a table.
346
table_list A list containing one table to write statement
348
packet Pointer to a string where statement will be
352
Currently always return 0, but might return error code in the
359
int store_create_info(TableList *table_list, String *packet, bool is_if_not_exists)
361
List<Item> field_list;
362
char tmp[MAX_FIELD_WIDTH], *for_str, def_value_buf[MAX_FIELD_WIDTH];
365
String type(tmp, sizeof(tmp), system_charset_info);
366
String def_value(def_value_buf, sizeof(def_value_buf), system_charset_info);
368
uint32_t primary_key;
370
Table *table= table_list->table;
371
Cursor *cursor= table->cursor;
372
HA_CREATE_INFO create_info;
373
my_bitmap_map *old_map;
375
table->restoreRecordAsDefault(); // Get empty record
377
if (table->getShare()->getType())
378
packet->append(STRING_WITH_LEN("CREATE TEMPORARY TABLE "));
380
packet->append(STRING_WITH_LEN("CREATE TABLE "));
381
if (is_if_not_exists)
382
packet->append(STRING_WITH_LEN("IF NOT EXISTS "));
383
alias= table->getShare()->getTableName();
385
packet->append_identifier(alias, strlen(alias));
386
packet->append(STRING_WITH_LEN(" (\n"));
388
We need this to get default values from the table
389
We have to restore the read_set if we are called from insert in case
390
of row based replication.
392
old_map= table->use_all_columns(table->read_set);
394
for (ptr= table->getFields() ; (field= *ptr); ptr++)
396
uint32_t flags = field->flags;
398
if (ptr != table->getFields())
399
packet->append(STRING_WITH_LEN(",\n"));
401
packet->append(STRING_WITH_LEN(" "));
402
packet->append_identifier(field->field_name, strlen(field->field_name));
404
// check for surprises from the previous call to Field::sql_type()
405
if (type.ptr() != tmp)
406
type.set(tmp, sizeof(tmp), system_charset_info);
408
type.set_charset(system_charset_info);
410
field->sql_type(type);
411
packet->append(type.ptr(), type.length(), system_charset_info);
413
if (field->has_charset())
416
For string types dump collation name only if
417
collation is not primary for the given charset
419
if (!(field->charset()->state & MY_CS_PRIMARY))
421
packet->append(STRING_WITH_LEN(" COLLATE "));
422
packet->append(field->charset()->name);
426
if (flags & NOT_NULL_FLAG)
427
packet->append(STRING_WITH_LEN(" NOT NULL"));
428
else if (field->type() == DRIZZLE_TYPE_TIMESTAMP)
431
TIMESTAMP field require explicit NULL flag, because unlike
432
all other fields they are treated as NOT NULL by default.
434
packet->append(STRING_WITH_LEN(" NULL"));
438
Add field flags about FIELD FORMAT (FIXED or DYNAMIC)
439
and about STORAGE (DISK or MEMORY).
441
enum column_format_type column_format= (enum column_format_type)
442
((flags >> COLUMN_FORMAT_FLAGS) & COLUMN_FORMAT_MASK);
445
packet->append(STRING_WITH_LEN(" /*!"));
446
packet->append(STRING_WITH_LEN(" COLUMN_FORMAT"));
447
if (column_format == COLUMN_FORMAT_TYPE_FIXED)
448
packet->append(STRING_WITH_LEN(" FIXED */"));
450
packet->append(STRING_WITH_LEN(" DYNAMIC */"));
453
if (get_field_default_value(table->timestamp_field, field, &def_value, 1))
455
packet->append(STRING_WITH_LEN(" DEFAULT "));
456
packet->append(def_value.ptr(), def_value.length(), system_charset_info);
459
if (table->timestamp_field == field && field->unireg_check != Field::TIMESTAMP_DN_FIELD)
460
packet->append(STRING_WITH_LEN(" ON UPDATE CURRENT_TIMESTAMP"));
462
if (field->unireg_check == Field::NEXT_NUMBER)
463
packet->append(STRING_WITH_LEN(" AUTO_INCREMENT"));
465
if (field->comment.length)
467
packet->append(STRING_WITH_LEN(" COMMENT "));
468
append_unescaped(packet, field->comment.str, field->comment.length);
472
key_info= table->key_info;
473
memset(&create_info, 0, sizeof(create_info));
475
primary_key= table->getShare()->getPrimaryKey();
477
for (uint32_t i=0 ; i < table->getShare()->sizeKeys() ; i++,key_info++)
479
KeyPartInfo *key_part= key_info->key_part;
480
bool found_primary=0;
481
packet->append(STRING_WITH_LEN(",\n "));
483
if (i == primary_key && is_primary_key(key_info))
487
No space at end, because a space will be added after where the
488
identifier would go, but that is not added for primary key.
490
packet->append(STRING_WITH_LEN("PRIMARY KEY"));
492
else if (key_info->flags & HA_NOSAME)
493
packet->append(STRING_WITH_LEN("UNIQUE KEY "));
495
packet->append(STRING_WITH_LEN("KEY "));
498
packet->append_identifier(key_info->name, strlen(key_info->name));
500
packet->append(STRING_WITH_LEN(" ("));
502
for (uint32_t j=0 ; j < key_info->key_parts ; j++,key_part++)
508
packet->append_identifier(key_part->field->field_name,
509
strlen(key_part->field->field_name));
510
if (key_part->field &&
512
table->getField(key_part->fieldnr-1)->key_length()))
515
buff.append(to_string((int32_t) key_part->length /
516
key_part->field->charset()->mbmaxlen));
518
packet->append(buff.c_str(), buff.length());
522
store_key_options(packet, table, key_info);
526
Get possible foreign key definitions stored in InnoDB and append them
527
to the CREATE TABLE statement
530
if ((for_str= cursor->get_foreign_key_create_info()))
532
packet->append(for_str, strlen(for_str));
533
cursor->free_foreign_key_create_info(for_str);
536
packet->append(STRING_WITH_LEN("\n)"));
539
Get possible table space definitions and append them
540
to the CREATE TABLE statement
544
We should always store engine since we will now be
545
making sure engines accept options (aka... no
546
dangling arguments for engines.
548
packet->append(STRING_WITH_LEN(" ENGINE="));
549
packet->append(cursor->getEngine()->getName().c_str());
551
size_t num_engine_options= table->getShare()->getTableProto()->engine().options_size();
552
for (size_t x= 0; x < num_engine_options; ++x)
554
const message::Engine::Option &option= table->getShare()->getTableProto()->engine().options(x);
556
packet->append(option.name().c_str());
558
append_unescaped(packet, option.state().c_str(), option.state().length());
561
if (table->getShare()->block_size)
563
packet->append(STRING_WITH_LEN(" BLOCK_SIZE="));
564
buff= to_string(table->getShare()->block_size);
565
packet->append(buff.c_str(), buff.length());
567
table->cursor->append_create_info(packet);
568
if (table->getMutableShare()->hasComment() && table->getMutableShare()->getCommentLength())
570
packet->append(STRING_WITH_LEN(" COMMENT="));
571
append_unescaped(packet, table->getMutableShare()->getComment(),
572
table->getMutableShare()->getCommentLength());
575
table->restore_column_map(old_map);
579
static void store_key_options(String *packet, Table *, KeyInfo *key_info)
581
if (key_info->algorithm == HA_KEY_ALG_BTREE)
582
packet->append(STRING_WITH_LEN(" USING BTREE"));
584
if (key_info->algorithm == HA_KEY_ALG_HASH)
585
packet->append(STRING_WITH_LEN(" USING HASH"));
587
assert(test(key_info->flags & HA_USES_COMMENT) ==
588
(key_info->comment.length > 0));
589
if (key_info->flags & HA_USES_COMMENT)
591
packet->append(STRING_WITH_LEN(" COMMENT "));
592
append_unescaped(packet, key_info->comment.str,
593
key_info->comment.length);
598
/****************************************************************************
599
Return info about all processes
600
returns for each thread: thread id, user, host, db, command, info
601
****************************************************************************/
616
thread_info(uint64_t thread_id_arg,
617
time_t start_time_arg,
618
uint32_t command_arg,
619
const string &user_arg,
620
const string &host_arg,
621
const string &db_arg,
622
const string &proc_info_arg,
623
const string &state_info_arg,
624
const string &query_arg)
625
: thread_id(thread_id_arg), start_time(start_time_arg), command(command_arg),
626
user(user_arg), host(host_arg), db(db_arg), proc_info(proc_info_arg),
627
state_info(state_info_arg), query(query_arg)
146
631
} /* namespace drizzled */