MySQL 8.0.32
Source Code Documentation
system_variables.h
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1/* Copyright (c) 2015, 2022, Oracle and/or its affiliates.
2
3 This program is free software; you can redistribute it and/or modify
4 it under the terms of the GNU General Public License, version 2.0,
5 as published by the Free Software Foundation.
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12 separately licensed software that they have included with MySQL.
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15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License, version 2.0, for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
22
23#ifndef SYSTEM_VARIABLES_INCLUDED
24#define SYSTEM_VARIABLES_INCLUDED
25
26#include <stddef.h>
27#include <sys/types.h>
28
29#include "m_ctype.h"
30#include "my_base.h" // ha_rows
31#include "my_inttypes.h"
32#include "my_sqlcommand.h"
33#include "my_thread_local.h" // my_thread_id
34#include "sql/rpl_gtid.h" // Gitd_specification
35#include "sql/sql_plugin_ref.h" // plugin_ref
36
37class MY_LOCALE;
38class Time_zone;
39
41struct LIST;
42
43// Values for binlog_format sysvar
45 BINLOG_FORMAT_MIXED = 0, ///< statement if safe, otherwise row - autodetected
46 BINLOG_FORMAT_STMT = 1, ///< statement-based
47 BINLOG_FORMAT_ROW = 2, ///< row-based
49 3 ///< thd_binlog_format() returns it when binlog is closed
50};
51
52// Values for rbr_exec_mode_options sysvar
57};
58
59// Values for binlog_row_image sysvar
61 /** PKE in the before image and changed columns in the after image */
63 /** Whenever possible, before and after image contain all columns except
64 blobs. */
66 /** All columns in both before and after image. */
68};
69
70// Bits for binlog_row_value_options sysvar
72 /// Store JSON updates in partial form
74};
75
76// Values for binlog_row_metadata sysvar
80};
81
82// Values for transaction_write_set_extraction sysvar
87};
88
89// Values for session_track_gtids sysvar
94};
95
96/** Values for use_secondary_engine sysvar. */
102
103/**
104 Values for explain_format sysvar.
105
106 The value "TRADITIONAL_STRICT" is meant only to be used by the mtr test
107 suite. With hypergraph optimizer, if explain_format value is TRADITIONAL,
108 EXPLAIN without a format specifier prints in TREE format. The mtr tests were
109 written *before* this traditional-tree conversion was introduced. So mtr was
110 designed to just ignore the "format not supported with hypergraph" error when
111 a test runs an EXPLAIN without format specifier with --hypergraph. With the
112 conversion introduced, EXPLAIN without format specifier therefore would have
113 output in different formats with and without the mtr --hypergraph option. In
114 order for the mtr tests to be able to continue to pass, mtr internally sets
115 explain_format to TRADITIONAL_STRICT so that these statements continue to
116 error out rather than print TREE format as they would do with TRADITIONAL
117 format. This is a temporary stuff. Once all tests start using TREE format,
118 we will deprecate this value.
119*/
120enum class Explain_format_type : ulong {
121 TRADITIONAL = 0,
123 TREE = 2,
124 JSON = 3
125};
126
127/* Bits for different SQL modes modes (including ANSI mode) */
128#define MODE_REAL_AS_FLOAT 1
129#define MODE_PIPES_AS_CONCAT 2
130#define MODE_ANSI_QUOTES 4
131#define MODE_IGNORE_SPACE 8
132#define MODE_NOT_USED 16
133#define MODE_ONLY_FULL_GROUP_BY 32
134#define MODE_NO_UNSIGNED_SUBTRACTION 64
135#define MODE_NO_DIR_IN_CREATE 128
136#define MODE_ANSI 262144L
137#define MODE_NO_AUTO_VALUE_ON_ZERO (MODE_ANSI * 2)
138#define MODE_NO_BACKSLASH_ESCAPES (MODE_NO_AUTO_VALUE_ON_ZERO * 2)
139#define MODE_STRICT_TRANS_TABLES (MODE_NO_BACKSLASH_ESCAPES * 2)
140#define MODE_STRICT_ALL_TABLES (MODE_STRICT_TRANS_TABLES * 2)
141/*
142 * NO_ZERO_DATE, NO_ZERO_IN_DATE and ERROR_FOR_DIVISION_BY_ZERO modes are
143 * removed in 5.7 and their functionality is merged with STRICT MODE.
144 * However, For backward compatibility during upgrade, these modes are kept
145 * but they are not used. Setting these modes in 5.7 will give warning and
146 * have no effect.
147 */
148#define MODE_NO_ZERO_IN_DATE (MODE_STRICT_ALL_TABLES * 2)
149#define MODE_NO_ZERO_DATE (MODE_NO_ZERO_IN_DATE * 2)
150#define MODE_INVALID_DATES (MODE_NO_ZERO_DATE * 2)
151#define MODE_ERROR_FOR_DIVISION_BY_ZERO (MODE_INVALID_DATES * 2)
152#define MODE_TRADITIONAL (MODE_ERROR_FOR_DIVISION_BY_ZERO * 2)
153#define MODE_HIGH_NOT_PRECEDENCE (1ULL << 29)
154#define MODE_NO_ENGINE_SUBSTITUTION (MODE_HIGH_NOT_PRECEDENCE * 2)
155#define MODE_PAD_CHAR_TO_FULL_LENGTH (1ULL << 31)
156/*
157 If this mode is set the fractional seconds which cannot fit in given fsp will
158 be truncated.
159*/
160#define MODE_TIME_TRUNCATE_FRACTIONAL (1ULL << 32)
161
162#define MODE_LAST (1ULL << 33)
163
164#define MODE_ALLOWED_MASK \
165 (MODE_REAL_AS_FLOAT | MODE_PIPES_AS_CONCAT | MODE_ANSI_QUOTES | \
166 MODE_IGNORE_SPACE | MODE_NOT_USED | MODE_ONLY_FULL_GROUP_BY | \
167 MODE_NO_UNSIGNED_SUBTRACTION | MODE_NO_DIR_IN_CREATE | MODE_ANSI | \
168 MODE_NO_AUTO_VALUE_ON_ZERO | MODE_NO_BACKSLASH_ESCAPES | \
169 MODE_STRICT_TRANS_TABLES | MODE_STRICT_ALL_TABLES | MODE_NO_ZERO_IN_DATE | \
170 MODE_NO_ZERO_DATE | MODE_INVALID_DATES | MODE_ERROR_FOR_DIVISION_BY_ZERO | \
171 MODE_TRADITIONAL | MODE_HIGH_NOT_PRECEDENCE | MODE_NO_ENGINE_SUBSTITUTION | \
172 MODE_PAD_CHAR_TO_FULL_LENGTH | MODE_TIME_TRUNCATE_FRACTIONAL)
173
174/*
175 We can safely ignore and reset these obsolete mode bits while replicating:
176*/
177#define MODE_IGNORED_MASK \
178 (0x00100 | /* was: MODE_POSTGRESQL */ \
179 0x00200 | /* was: MODE_ORACLE */ \
180 0x00400 | /* was: MODE_MSSQL */ \
181 0x00800 | /* was: MODE_DB2 */ \
182 0x01000 | /* was: MODE_MAXDB */ \
183 0x02000 | /* was: MODE_NO_KEY_OPTIONS */ \
184 0x04000 | /* was: MODE_NO_TABLE_OPTIONS */ \
185 0x08000 | /* was: MODE_NO_FIELD_OPTIONS */ \
186 0x10000 | /* was: MODE_MYSQL323 */ \
187 0x20000 | /* was: MODE_MYSQL40 */ \
188 0x10000000 /* was: MODE_NO_AUTO_CREATE_USER */ \
189 )
190
191/*
192 Replication uses 8 bytes to store SQL_MODE in the binary log. The day you
193 use strictly more than 64 bits by adding one more define above, you should
194 contact the replication team because the replication code should then be
195 updated (to store more bytes on disk).
196
197 NOTE: When adding new SQL_MODE types, make sure to also add them to
198 the scripts used for creating the MySQL system tables
199 in scripts/mysql_system_tables.sql and scripts/mysql_system_tables_fix.sql
200*/
201
203 /*
204 How dynamically allocated system variables are handled:
205
206 The global_system_variables and max_system_variables are "authoritative"
207 They both should have the same 'version' and 'size'.
208 When attempting to access a dynamic variable, if the session version
209 is out of date, then the session version is updated and realloced if
210 necessary and bytes copied from global to make up for missing data.
211 */
214 uint dynamic_variables_head; /* largest valid variable offset */
215 uint dynamic_variables_size; /* how many bytes are in use */
216 LIST *dynamic_variables_allocs; /* memory hunks for PLUGIN_VAR_MEMALLOC */
217
223 /* A bitmap for switching optimizations on/off */
225 ulonglong optimizer_trace; ///< bitmap to tune optimizer tracing
226 ulonglong optimizer_trace_features; ///< bitmap to select features to trace
230 sql_mode_t sql_mode; ///< which non-standard SQL behaviour should be enabled
231 ulonglong option_bits; ///< OPTION_xxx constants, e.g. OPTION_PROFILING
243 ulong max_length_for_sort_data; ///< Unused.
274 ulong binlog_format; ///< binlog format for this thd (see enum_binlog_format)
275 ulong rbr_exec_mode_options; // see enum_rbr_exec_mode
277 ulong binlog_row_image; // see enum_binlog_row_image
279 ulong binlog_trx_compression_type; // see enum_binlog_trx_compression
283 // see enum_transaction_write_set_hashing_algorithm
291 /**
292 Controls what resultset metadata will be sent to the client.
293 @sa enum_resultset_metadata
294 */
296
297 /**
298 In slave thread we need to know in behalf of which
299 thread the query is being run to replicate temp tables properly
300 */
302 /**
303 Default transaction access mode. READ ONLY (true) or READ WRITE (false).
304 */
309
312
315
316 /* Only charset part of these variables is sensible */
320
321 /* Both charset and collation parts of these variables are important */
325
326 /* Error messages */
328 /* Locale Support */
330
332 /*
333 TIMESTAMP fields are by default created with DEFAULT clauses
334 implicitly without users request. This flag when set, disables
335 implicit default values and expect users to provide explicit
336 default clause. i.e., when set columns are defined as NULL,
337 instead of NOT NULL by default.
338 */
340
343
345
347
350 ulong session_track_gtids; // see enum_session_track_gtids
351
353
358
359 /*
360 Time in seconds, after which the statistics in mysql.table/index_stats
361 get invalid
362 */
364
365 /**
366 Used for the verbosity of SHOW CREATE TABLE. Currently used for displaying
367 the row format in the output even if the table uses default row format.
368 */
370
371 /**
372 Compatibility option to mark the pre MySQL-5.6.4 temporals columns using
373 the old format using comments for SHOW CREATE TABLE and in I_S.COLUMNS
374 'COLUMN_TYPE' field.
375 */
377 // Used for replication delay and lag monitoring
379
380 ulong
381 internal_tmp_mem_storage_engine; // enum_internal_tmp_mem_storage_engine
382
384
385 /** Used for controlling preparation of queries against secondary engine. */
387
388 /**
389 Used for controlling which statements to execute in a secondary
390 storage engine. Only queries with an estimated cost higher than
391 this value will be attempted executed in a secondary storage
392 engine.
393 */
395
396 /** Used for controlling Group Replication consistency guarantees */
398
400
401 /**
402 @sa Sys_sql_generate_invisible_primary_key
403 */
405
406 /**
407 @sa Sys_show_gipk_in_create_table_and_information_schema
408 */
410
411 /**
412 Used in replication to determine the server version of the original server
413 where the transaction was executed.
414 */
416
417 /**
418 Used in replication to determine the server version of the immediate server
419 in the replication topology.
420 */
422
423 /**
424 Used to determine if the database or tablespace should be encrypted by
425 default.
426 */
428
429 /**
430 @sa Sys_var_print_identified_with_as_hex
431 */
433
434 /**
435 @sa Sys_var_show_create_table_skip_secondary_engine
436 */
438
439 /**
440 @sa Sys_var_generated_random_password_length
441 */
443
444 /**
445 @sa Sys_var_require_row_format
446 */
448 /**
449 @sa Sys_select_into_buffer_size
450 */
452 /**
453 @sa Sys_select_into_disk_sync
454 */
456 /**
457 @sa Sys_select_disk_sync_delay
458 */
460
461 /**
462 @sa Sys_terminology_use_previous
463 */
465
466 /**
467 @sa Sys_connection_memory_limit
468 */
470 /**
471 @sa Sys_connection_memory_chunk_size
472 */
474 /**
475 @sa Sys_connection_global_memory_tracking
476 */
478
479 /**
480 Switch which controls whether XA transactions are detached
481 (made accessible to other connections for commit/rollback)
482 as part of XA PREPARE (true), or at session disconnect (false, default).
483 An important side effect of setting this to true is that temporary tables
484 are disallowed in XA transactions. This is necessary because temporary
485 tables and their contents (and thus changes to them) is bound to
486 specific connections, so they don't make sense if XA transaction is
487 committed or rolled back from another connection.
488 */
490
491 /**
492 @sa Sys_debug_sensitive_session_string
493 */
495
496 /**
497 Used to specify the format in which the EXPLAIN statement should display
498 information if the FORMAT option is not explicitly specified.
499 @sa Sys_explain_format
500 */
502};
503
504/**
505 Per thread status variables.
506 Must be long/ulong up to last_system_status_var so that
507 add_to_status/add_diff_to_status can work.
508*/
509
511 /* IMPORTANT! See first_system_status_var definition below. */
523 /*
524 This number doesn't include calls to the default implementation and
525 calls made by range access. The intent is to count only calls made by
526 BatchedKeyAccess.
527 */
552 /* Prepared statements and binary protocol. */
560
563
567
568 /* Number of statements sent from the client. */
570
571 /// How many queries have been executed on a secondary storage engine.
573
576
577 /*
578 IMPORTANT! See last_system_status_var definition below. Variables after
579 'last_system_status_var' cannot be handled automatically by add_to_status()
580 and add_diff_to_status().
581 */
584};
585
586/*
587 This must reference the LAST ulonglong variable in system_status_var that is
588 used as a global counter. It marks the end of a contiguous block of counters
589 that can be iteratively totaled. See add_to_status().
590*/
591#define LAST_STATUS_VAR secondary_engine_execution_count
592
593/*
594 This must reference the FIRST ulonglong variable in system_status_var that is
595 used as a global counter. It marks the start of a contiguous block of counters
596 that can be iteratively totaled.
597*/
598#define FIRST_STATUS_VAR created_tmp_disk_tables
599
600/* Number of contiguous global status variables. */
604 sizeof(ulonglong)) +
605 1;
606
608 System_status_var *dec_var);
609
610void add_to_status(System_status_var *to_var, System_status_var *from_var);
611
613
614#endif // SYSTEM_VARIABLES_INCLUDED
Definition: sql_locale.h:36
This class represents abstract time zone and provides basic interface for MYSQL_TIME <-> my_time_t co...
Definition: tztime.h:48
ulonglong sql_mode_t
Definition: dd_event.h:36
A better implementation of the UNIX ctype(3) library.
This file includes constants used by all storage engines.
my_off_t ha_rows
Definition: my_base.h:1139
Some integer typedefs for easier portability.
unsigned long long int ulonglong
Definition: my_inttypes.h:55
@ SQLCOM_END
Definition: my_sqlcommand.h:206
uint32 my_thread_id
Definition: my_thread_local.h:33
SHOW_VAR status_vars[]
Definition: mysqld.cc:9552
Definition: m_ctype.h:382
Holds information about a Gtid_set.
Definition: rpl_gtid.h:2369
This struct represents a specification of a GTID for a statement to be executed: either "AUTOMATIC",...
Definition: rpl_gtid.h:3790
Definition: my_list.h:35
Per thread status variables.
Definition: system_variables.h:510
ulonglong com_stmt_reprepare
Definition: system_variables.h:554
ulonglong bytes_sent
Definition: system_variables.h:562
ulonglong ha_read_first_count
Definition: system_variables.h:516
ulonglong long_query_count
Definition: system_variables.h:547
ulonglong ha_commit_count
Definition: system_variables.h:514
ulonglong secondary_engine_execution_count
How many queries have been executed on a secondary storage engine.
Definition: system_variables.h:572
ulonglong opened_tables
Definition: system_variables.h:537
ulonglong created_tmp_tables
Definition: system_variables.h:513
ulonglong com_stmt_prepare
Definition: system_variables.h:553
ulonglong max_execution_time_exceeded
Definition: system_variables.h:564
ulonglong table_open_cache_overflows
Definition: system_variables.h:541
ulonglong select_full_range_join_count
Definition: system_variables.h:543
ulonglong select_full_join_count
Definition: system_variables.h:542
ulonglong ha_savepoint_count
Definition: system_variables.h:534
ulonglong table_open_cache_misses
Definition: system_variables.h:540
ulonglong filesort_range_count
Definition: system_variables.h:549
ulonglong last_query_partial_plans
Definition: system_variables.h:583
ulong com_other
Definition: system_variables.h:574
ulonglong max_execution_time_set_failed
Definition: system_variables.h:566
ulonglong filesort_scan_count
Definition: system_variables.h:551
ulonglong com_stmt_execute
Definition: system_variables.h:555
ulong com_stat[(uint) SQLCOM_END]
Definition: system_variables.h:575
ulonglong com_stmt_reset
Definition: system_variables.h:558
ulonglong ha_read_next_count
Definition: system_variables.h:519
ulonglong ha_update_count
Definition: system_variables.h:530
ulonglong ha_read_rnd_count
Definition: system_variables.h:521
ulonglong ha_read_rnd_next_count
Definition: system_variables.h:522
ulonglong com_stmt_fetch
Definition: system_variables.h:557
ulonglong created_tmp_disk_tables
Definition: system_variables.h:512
ulonglong opened_shares
Definition: system_variables.h:538
ulonglong com_stmt_send_long_data
Definition: system_variables.h:556
ulonglong com_stmt_close
Definition: system_variables.h:559
ulonglong bytes_received
Definition: system_variables.h:561
double last_query_cost
Definition: system_variables.h:582
ulonglong ha_read_prev_count
Definition: system_variables.h:520
ulonglong select_range_check_count
Definition: system_variables.h:545
ulonglong table_open_cache_hits
Definition: system_variables.h:539
ulonglong filesort_merge_passes
Definition: system_variables.h:548
ulonglong ha_read_last_count
Definition: system_variables.h:517
ulonglong ha_delete_count
Definition: system_variables.h:515
ulonglong ha_multi_range_read_init_count
Definition: system_variables.h:528
ulonglong filesort_rows
Definition: system_variables.h:550
ulonglong ha_savepoint_rollback_count
Definition: system_variables.h:535
ulonglong ha_external_lock_count
Definition: system_variables.h:536
ulonglong ha_read_key_count
Definition: system_variables.h:518
ulonglong select_range_count
Definition: system_variables.h:544
ulonglong ha_rollback_count
Definition: system_variables.h:529
ulonglong ha_prepare_count
Definition: system_variables.h:532
ulonglong ha_write_count
Definition: system_variables.h:531
ulonglong questions
Definition: system_variables.h:569
ulonglong select_scan_count
Definition: system_variables.h:546
ulonglong max_execution_time_set
Definition: system_variables.h:565
ulonglong ha_discover_count
Definition: system_variables.h:533
Definition: system_variables.h:202
ulong read_rnd_buff_size
Definition: system_variables.h:262
plugin_ref temp_table_plugin
Definition: system_variables.h:314
ulong use_secondary_engine
Used for controlling preparation of queries against secondary engine.
Definition: system_variables.h:386
ulong profiling_history_size
Definition: system_variables.h:260
ulong group_concat_max_len
Definition: system_variables.h:273
long optimizer_trace_offset
Definition: system_variables.h:227
ulong trans_prealloc_size
Definition: system_variables.h:272
bool show_create_table_skip_secondary_engine
Definition: system_variables.h:437
ulong trans_alloc_block_size
Definition: system_variables.h:271
bool print_identified_with_as_hex
Definition: system_variables.h:432
bool new_mode
Definition: system_variables.h:307
bool transaction_read_only
Default transaction access mode.
Definition: system_variables.h:305
ulonglong parser_max_mem_size
Definition: system_variables.h:257
bool select_into_disk_sync
Definition: system_variables.h:455
ulonglong conn_mem_limit
Definition: system_variables.h:469
uint cte_max_recursion_depth
Definition: system_variables.h:237
ulong range_optimizer_max_mem_size
Definition: system_variables.h:258
ulong min_examined_row_limit
Definition: system_variables.h:247
uint32_t original_server_version
Used in replication to determine the server version of the original server where the transaction was ...
Definition: system_variables.h:415
bool sql_generate_invisible_primary_key
Definition: system_variables.h:404
ulong max_length_for_sort_data
Unused.
Definition: system_variables.h:243
ulong net_retry_count
Definition: system_variables.h:251
ulong resultset_metadata
Controls what resultset metadata will be sent to the client.
Definition: system_variables.h:295
ulong read_buff_size
Definition: system_variables.h:261
bool sysdate_is_now
Definition: system_variables.h:341
bool show_gipk_in_create_table_and_information_schema
Definition: system_variables.h:409
bool session_track_schema
Definition: system_variables.h:355
ulong ssl_fips_mode
Definition: system_variables.h:290
ulong optimizer_search_depth
Definition: system_variables.h:255
double long_query_time_double
Definition: system_variables.h:344
ulong max_sp_recursion_depth
Definition: system_variables.h:265
ulong max_insert_delayed_threads
Definition: system_variables.h:246
double secondary_engine_cost_threshold
Used for controlling which statements to execute in a secondary storage engine.
Definition: system_variables.h:394
char * dynamic_variables_ptr
Definition: system_variables.h:213
long optimizer_trace_limit
Definition: system_variables.h:228
const CHARSET_INFO * character_set_filesystem
Definition: system_variables.h:317
ulong auto_increment_offset
Definition: system_variables.h:234
ulong net_buffer_length
Definition: system_variables.h:248
ulong binlog_trx_compression_type
Definition: system_variables.h:279
MY_LOCALE * lc_messages
Definition: system_variables.h:327
ulong max_points_in_geometry
Definition: system_variables.h:244
ulong lock_wait_timeout
Definition: system_variables.h:240
ulonglong option_bits
OPTION_xxx constants, e.g. OPTION_PROFILING.
Definition: system_variables.h:231
ulong information_schema_stats_expiry
Definition: system_variables.h:363
ulong join_buff_size
Definition: system_variables.h:239
bool windowing_use_high_precision
Definition: system_variables.h:222
uint select_into_disk_sync_delay
Definition: system_variables.h:459
ulong net_read_timeout
Definition: system_variables.h:250
uint32_t generated_random_password_length
Definition: system_variables.h:442
ulong auto_increment_increment
Definition: system_variables.h:234
ulong max_execution_time
Definition: system_variables.h:352
MY_LOCALE * lc_time_names
Definition: system_variables.h:329
ulong session_track_gtids
Definition: system_variables.h:350
ulonglong long_query_time
Definition: system_variables.h:220
ulonglong optimizer_switch
Definition: system_variables.h:224
bool binlog_rows_query_log_events
Definition: system_variables.h:342
ulong net_write_timeout
Definition: system_variables.h:253
ulonglong original_commit_timestamp
Definition: system_variables.h:378
char * debug_sensitive_session_str
Definition: system_variables.h:494
LIST * dynamic_variables_allocs
Definition: system_variables.h:216
ulong max_allowed_packet
Definition: system_variables.h:241
ulonglong optimizer_trace_features
bitmap to select features to trace
Definition: system_variables.h:226
bool explicit_defaults_for_timestamp
Definition: system_variables.h:339
bool end_markers_in_json
Definition: system_variables.h:221
ulong optimizer_prune_level
Definition: system_variables.h:254
bool require_row_format
Definition: system_variables.h:447
Time_zone * time_zone
Definition: system_variables.h:331
Gtid_specification gtid_next
Definition: system_variables.h:348
bool big_tables
Definition: system_variables.h:311
ulong range_alloc_block_size
Definition: system_variables.h:268
ulong conn_mem_chunk_size
Definition: system_variables.h:473
ulong dynamic_variables_version
Definition: system_variables.h:212
bool session_track_state_change
Definition: system_variables.h:356
ulong binlog_row_image
Definition: system_variables.h:277
uint32_t immediate_server_version
Used in replication to determine the server version of the immediate server in the replication topolo...
Definition: system_variables.h:421
bool show_create_table_verbosity
Used for the verbosity of SHOW CREATE TABLE.
Definition: system_variables.h:369
bool sql_log_bin
Definition: system_variables.h:282
ulong updatable_views_with_limit
Definition: system_variables.h:287
ulong transaction_isolation
Definition: system_variables.h:286
sql_mode_t sql_mode
which non-standard SQL behaviour should be enabled
Definition: system_variables.h:230
my_thread_id pseudo_thread_id
In slave thread we need to know in behalf of which thread the query is being run to replicate temp ta...
Definition: system_variables.h:301
Gtid_set_or_null gtid_next_list
Definition: system_variables.h:349
ulonglong tmp_table_size
Definition: system_variables.h:219
ulong query_prealloc_size
Definition: system_variables.h:270
const CHARSET_INFO * collation_server
Definition: system_variables.h:322
bool xa_detach_on_prepare
Switch which controls whether XA transactions are detached (made accessible to other connections for ...
Definition: system_variables.h:489
ulonglong binlog_row_value_options
Definition: system_variables.h:281
ulonglong max_heap_table_size
Definition: system_variables.h:218
ulong rbr_exec_mode_options
Definition: system_variables.h:275
const CHARSET_INFO * character_set_client
Definition: system_variables.h:318
bool show_old_temporals
Compatibility option to mark the pre MySQL-5.6.4 temporals columns using the old format using comment...
Definition: system_variables.h:376
ulong terminology_use_previous
Definition: system_variables.h:464
uint binlog_trx_compression_level_zstd
Definition: system_variables.h:280
bool keep_files_on_create
Definition: system_variables.h:308
const CHARSET_INFO * default_collation_for_utf8mb4
Definition: system_variables.h:383
ulong optimizer_trace_max_mem_size
Definition: system_variables.h:229
bool conn_global_mem_tracking
Definition: system_variables.h:477
ulong bulk_insert_buff_size
Definition: system_variables.h:235
uint max_user_connections
Definition: system_variables.h:288
ulonglong histogram_generation_max_mem_size
Definition: system_variables.h:238
bool binlog_direct_non_trans_update
Definition: system_variables.h:276
ulong default_week_format
Definition: system_variables.h:266
ulong completion_type
Definition: system_variables.h:285
bool binlog_trx_compression
Definition: system_variables.h:278
uint dynamic_variables_size
Definition: system_variables.h:215
plugin_ref table_plugin
Definition: system_variables.h:313
ulong group_replication_consistency
Used for controlling Group Replication consistency guarantees.
Definition: system_variables.h:397
ha_rows max_join_size
Definition: system_variables.h:233
const CHARSET_INFO * character_set_results
Definition: system_variables.h:319
bool pseudo_replica_mode
Definition: system_variables.h:346
char * track_sysvars_ptr
Definition: system_variables.h:354
ulong div_precincrement
Definition: system_variables.h:263
bool low_priority_updates
Definition: system_variables.h:306
uint dynamic_variables_head
Definition: system_variables.h:214
ulong net_interactive_timeout
Definition: system_variables.h:249
const CHARSET_INFO * collation_database
Definition: system_variables.h:323
ulong select_into_buffer_size
Definition: system_variables.h:451
ulong preload_buff_size
Definition: system_variables.h:259
ulong binlog_format
binlog format for this thd (see enum_binlog_format)
Definition: system_variables.h:274
ulong max_sort_length
Definition: system_variables.h:245
ulong net_wait_timeout
Definition: system_variables.h:252
bool sql_require_primary_key
Definition: system_variables.h:399
ulong transaction_write_set_extraction
Definition: system_variables.h:284
bool default_table_encryption
Used to determine if the database or tablespace should be encrypted by default.
Definition: system_variables.h:427
ulong query_alloc_block_size
Definition: system_variables.h:269
ulong max_seeks_for_key
Definition: system_variables.h:267
ulong my_aes_mode
Definition: system_variables.h:289
ulonglong optimizer_trace
bitmap to tune optimizer tracing
Definition: system_variables.h:225
bool old_alter_table
Definition: system_variables.h:310
uint eq_range_index_dive_limit
Definition: system_variables.h:236
ha_rows select_limit
Definition: system_variables.h:232
ulong max_error_count
Definition: system_variables.h:242
ulong internal_tmp_mem_storage_engine
Definition: system_variables.h:381
const CHARSET_INFO * collation_connection
Definition: system_variables.h:324
Explain_format_type explain_format
Used to specify the format in which the EXPLAIN statement should display information if the FORMAT op...
Definition: system_variables.h:501
ulong session_track_transaction_info
Definition: system_variables.h:357
ulong sortbuff_size
Definition: system_variables.h:264
ulong optimizer_max_subgraph_pairs
Definition: system_variables.h:256
Definition: my_tree.h:67
Definition: sql_plugin_ref.h:44
ulonglong sql_mode_t
Definition: system_variables.h:38
enum_rbr_exec_mode
Definition: system_variables.h:53
@ RBR_EXEC_MODE_LAST_BIT
Definition: system_variables.h:56
@ RBR_EXEC_MODE_IDEMPOTENT
Definition: system_variables.h:55
@ RBR_EXEC_MODE_STRICT
Definition: system_variables.h:54
void add_to_status(System_status_var *to_var, System_status_var *from_var)
Definition: system_variables.cc:41
use_secondary_engine
Values for use_secondary_engine sysvar.
Definition: system_variables.h:97
@ SECONDARY_ENGINE_OFF
Definition: system_variables.h:98
@ SECONDARY_ENGINE_FORCED
Definition: system_variables.h:100
@ SECONDARY_ENGINE_ON
Definition: system_variables.h:99
enum_binlog_row_metadata
Definition: system_variables.h:77
@ BINLOG_ROW_METADATA_FULL
Definition: system_variables.h:79
@ BINLOG_ROW_METADATA_MINIMAL
Definition: system_variables.h:78
enum_binlog_row_value_options
Definition: system_variables.h:71
@ PARTIAL_JSON_UPDATES
Store JSON updates in partial form.
Definition: system_variables.h:73
#define LAST_STATUS_VAR
Definition: system_variables.h:591
Explain_format_type
Values for explain_format sysvar.
Definition: system_variables.h:120
const int COUNT_GLOBAL_STATUS_VARS
Definition: system_variables.h:601
#define FIRST_STATUS_VAR
Definition: system_variables.h:598
void reset_system_status_vars(System_status_var *status_vars)
Definition: system_variables.cc:94
enum_binlog_row_image
Definition: system_variables.h:60
@ BINLOG_ROW_IMAGE_MINIMAL
PKE in the before image and changed columns in the after image.
Definition: system_variables.h:62
@ BINLOG_ROW_IMAGE_FULL
All columns in both before and after image.
Definition: system_variables.h:67
@ BINLOG_ROW_IMAGE_NOBLOB
Whenever possible, before and after image contain all columns except blobs.
Definition: system_variables.h:65
enum_transaction_write_set_hashing_algorithm
Definition: system_variables.h:83
@ HASH_ALGORITHM_MURMUR32
Definition: system_variables.h:85
@ HASH_ALGORITHM_OFF
Definition: system_variables.h:84
@ HASH_ALGORITHM_XXHASH64
Definition: system_variables.h:86
void add_diff_to_status(System_status_var *to_var, System_status_var *from_var, System_status_var *dec_var)
Definition: system_variables.cc:69
enum_binlog_format
Definition: system_variables.h:44
@ BINLOG_FORMAT_UNSPEC
thd_binlog_format() returns it when binlog is closed
Definition: system_variables.h:48
@ BINLOG_FORMAT_MIXED
statement if safe, otherwise row - autodetected
Definition: system_variables.h:45
@ BINLOG_FORMAT_ROW
row-based
Definition: system_variables.h:47
@ BINLOG_FORMAT_STMT
statement-based
Definition: system_variables.h:46
enum_session_track_gtids
Definition: system_variables.h:90
@ SESSION_TRACK_GTIDS_ALL_GTIDS
Definition: system_variables.h:93
@ SESSION_TRACK_GTIDS_OWN_GTID
Definition: system_variables.h:92
@ SESSION_TRACK_GTIDS_OFF
Definition: system_variables.h:91
unsigned int uint
Definition: uca-dump.cc:29