MySQL  8.0.16
Source Code Documentation
sys_vars.cc File Reference

Definitions of all server's session or global variables. More...

#include "sql/sys_vars.h"
#include "my_config.h"
#include <assert.h>
#include <limits.h>
#include <math.h>
#include <stdint.h>
#include <stdio.h>
#include <sys/stat.h>
#include <zlib.h>
#include <atomic>
#include <limits>
#include "my_loglevel.h"
#include "mysql_com.h"
#include "sql/protocol.h"
#include "sql/rpl_trx_tracking.h"
#include <algorithm>
#include <map>
#include <utility>
#include "../components/mysql_server/log_builtins_filter_imp.h"
#include "binlog_event.h"
#include "ft_global.h"
#include "m_string.h"
#include "my_aes.h"
#include "my_command.h"
#include "my_compiler.h"
#include "my_dbug.h"
#include "my_dir.h"
#include "my_double2ulonglong.h"
#include "my_io.h"
#include "my_macros.h"
#include "my_sqlcommand.h"
#include "my_thread.h"
#include "my_thread_local.h"
#include "my_time.h"
#include "myisam.h"
#include "mysql/components/services/log_builtins.h"
#include "mysql/plugin_group_replication.h"
#include "mysql/psi/mysql_mutex.h"
#include "mysql_version.h"
#include "sql/auth/auth_acls.h"
#include "sql/auth/auth_common.h"
#include "sql/binlog.h"
#include "sql/clone_handler.h"
#include "sql/conn_handler/connection_handler_impl.h"
#include "sql/conn_handler/connection_handler_manager.h"
#include "sql/conn_handler/socket_connection.h"
#include "sql/derror.h"
#include "sql/discrete_interval.h"
#include "sql/events.h"
#include "sql/hostname.h"
#include "sql/log.h"
#include "sql/log_event.h"
#include "sql/mdl.h"
#include "sql/my_decimal.h"
#include "sql/opt_trace_context.h"
#include "sql/options_mysqld.h"
#include "sql/protocol_classic.h"
#include "sql/psi_memory_key.h"
#include "sql/query_options.h"
#include "sql/rpl_group_replication.h"
#include "sql/rpl_info_factory.h"
#include "sql/rpl_info_handler.h"
#include "sql/rpl_log_encryption.h"
#include "sql/rpl_mi.h"
#include "sql/rpl_msr.h"
#include "sql/rpl_mts_submode.h"
#include "sql/rpl_rli.h"
#include "sql/rpl_slave.h"
#include "sql/rpl_write_set_handler.h"
#include "sql/session_tracker.h"
#include "sql/sp_head.h"
#include "sql/sql_backup_lock.h"
#include "sql/sql_lex.h"
#include "sql/sql_locale.h"
#include "sql/sql_parse.h"
#include "sql/sql_tmp_table.h"
#include "sql/ssl_acceptor_context.h"
#include "sql/system_variables.h"
#include "sql/table_cache.h"
#include "sql/transaction.h"
#include "sql/transaction_info.h"
#include "sql/xa.h"
#include "template_utils.h"
#include "thr_lock.h"
#include "storage/perfschema/pfs_server.h"

Macros

#define export   /* not static */
 
#define PFS_TRAILING_PROPERTIES
 

Functions

static bool update_buffer_size (THD *, KEY_CACHE *key_cache, ptrdiff_t offset, ulonglong new_value)
 
static bool update_keycache_param (THD *, KEY_CACHE *key_cache, ptrdiff_t offset, ulonglong new_value)
 
static bool check_session_admin (sys_var *self, THD *thd, set_var *setv)
 Check if SESSION_VARIABLES_ADMIN granted. More...
 
static bool check_partial_revokes (sys_var *self, THD *thd, set_var *setv)
 Checks, if there exists at least a partial revoke on a database at the time of turning OFF the system variable "@@partial_revokes". More...
 
static bool partial_revokes_update (sys_var *, THD *, enum_var_type)
 Sets the changed value to the corresponding atomic system variable. More...
 
static bool fix_binlog_cache_size (sys_var *, THD *thd, enum_var_type)
 
static bool fix_binlog_stmt_cache_size (sys_var *, THD *thd, enum_var_type)
 
static bool check_outside_trx (sys_var *, THD *thd, set_var *var)
 
static bool check_session_admin_outside_trx_outside_sf (sys_var *self, THD *thd, set_var *var)
 
static bool check_explicit_defaults_for_timestamp (sys_var *self, THD *thd, set_var *var)
 
static bool check_gtid_next (sys_var *self, THD *thd, set_var *var)
 Check-function to @GTID_NEXT system variable. More...
 
static bool check_session_admin_outside_trx_outside_sf_outside_sp (sys_var *self, THD *thd, set_var *var)
 
static bool binlog_format_check (sys_var *self, THD *thd, set_var *var)
 
static bool fix_binlog_format_after_update (sys_var *, THD *thd, enum_var_type type)
 
static bool prevent_global_rbr_exec_mode_idempotent (sys_var *self, THD *thd, set_var *var)
 
static bool check_binlog_row_image (sys_var *self, THD *thd, set_var *var)
 
static bool on_session_track_gtids_update (sys_var *, THD *thd, enum_var_type)
 
static bool binlog_direct_check (sys_var *self, THD *thd, set_var *var)
 
static bool repository_check (sys_var *self, THD *thd, set_var *var, SLAVE_THD_TYPE thread_mask)
 
static bool relay_log_info_repository_check (sys_var *self, THD *thd, set_var *var)
 
static bool master_info_repository_check (sys_var *self, THD *thd, set_var *var)
 
static bool relay_log_info_repository_update (sys_var *, THD *thd, enum_var_type)
 
static bool master_info_repository_update (sys_var *, THD *thd, enum_var_type)
 
static bool check_not_null (sys_var *, THD *, set_var *var)
 
static bool check_storage_engine (sys_var *self, THD *thd, set_var *var)
 Check storage engine is not empty and log warning. More...
 
static bool check_charset (sys_var *, THD *thd, set_var *var)
 
static bool check_charset_not_null (sys_var *self, THD *thd, set_var *var)
 
static bool check_charset_db (sys_var *self, THD *thd, set_var *var)
 
static bool update_deprecated (sys_var *self, THD *thd, enum_var_type)
 
static bool check_cs_client (sys_var *self, THD *thd, set_var *var)
 
static bool fix_thd_charset (sys_var *, THD *thd, enum_var_type type)
 
static bool check_cs_filesystem (sys_var *self, THD *thd, set_var *var)
 
static bool check_collation_not_null (sys_var *self, THD *thd, set_var *var)
 
static bool check_collation_db (sys_var *self, THD *thd, set_var *var)
 
export bool fix_delay_key_write (sys_var *, THD *, enum_var_type)
 
static bool event_scheduler_check (sys_var *, THD *, set_var *var)
 
static bool event_scheduler_update (sys_var *, THD *, enum_var_type)
 
static bool check_expire_logs_days (sys_var *, THD *, set_var *var)
 
static bool check_expire_logs_seconds (sys_var *, THD *, set_var *var)
 
static bool check_ftb_syntax (sys_var *, THD *, set_var *var)
 
static bool check_init_string (sys_var *, THD *, set_var *var)
 
static bool transaction_write_set_check (sys_var *self, THD *thd, set_var *var)
 
static bool check_log_bin_use_v1_row_events (sys_var *, THD *thd, set_var *var)
 
static bool check_log_error_services (sys_var *self, THD *thd, set_var *var)
 
static bool fix_log_error_services (sys_var *self, THD *thd, enum_var_type type)
 
static bool check_log_error_suppression_list (sys_var *self, THD *thd, set_var *var)
 
static bool fix_log_error_suppression_list (sys_var *self, THD *thd, enum_var_type type)
 
static bool update_log_throttle_queries_not_using_indexes (sys_var *, THD *thd, enum_var_type)
 
static bool update_log_error_verbosity (sys_var *, THD *, enum_var_type)
 
static bool update_cached_long_query_time (sys_var *, THD *thd, enum_var_type type)
 
static bool fix_low_prio_updates (sys_var *, THD *thd, enum_var_type type)
 
static bool session_readonly (sys_var *self, THD *, set_var *var)
 
static bool check_max_allowed_packet (sys_var *self, THD *thd, set_var *var)
 
static bool fix_max_binlog_size (sys_var *, THD *, enum_var_type)
 
static bool check_max_delayed_threads (sys_var *, THD *, set_var *var)
 
static bool fix_max_join_size (sys_var *self, THD *thd, enum_var_type type)
 
static bool fix_max_relay_log_size (sys_var *, THD *, enum_var_type)
 
static bool check_net_buffer_length (sys_var *self, THD *thd, set_var *var)
 
static bool fix_net_read_timeout (sys_var *self, THD *thd, enum_var_type type)
 
static bool fix_net_write_timeout (sys_var *self, THD *thd, enum_var_type type)
 
static bool fix_net_retry_count (sys_var *self, THD *thd, enum_var_type type)
 
static bool limit_parser_max_mem_size (sys_var *, THD *thd, set_var *var)
 
export void update_parser_max_mem_size ()
 
static bool optimizer_trace_update (sys_var *, THD *thd, enum_var_type)
 Delete all old optimizer traces. More...
 
static bool check_read_only (sys_var *, THD *thd, set_var *)
 
static bool check_require_secure_transport (sys_var *, THD *, set_var *var)
 
static bool fix_read_only (sys_var *self, THD *thd, enum_var_type)
 
static bool fix_super_read_only (sys_var *, THD *thd, enum_var_type type)
 
static bool fix_thd_mem_root (sys_var *self, THD *thd, enum_var_type type)
 
static bool fix_trans_mem_root (sys_var *self, THD *thd, enum_var_type type)
 
static bool fix_server_id (sys_var *, THD *thd, enum_var_type)
 
static bool check_not_null_not_empty (sys_var *self, THD *thd, set_var *var)
 
static bool check_slave_stopped (sys_var *self, THD *thd, set_var *var)
 
static bool check_binlog_transaction_dependency_tracking (sys_var *, THD *, set_var *var)
 
static bool update_binlog_transaction_dependency_tracking (sys_var *, THD *, enum_var_type)
 
static void issue_deprecation_warnings_gtid_mode (THD *thd, enum_gtid_mode oldmode, enum_gtid_mode newmode)
 This function shall issue a deprecation warning if the new gtid mode is set to GTID_MODE_ON and there is at least one replication channel with IGNORE_SERVER_IDS configured (i.e., not empty). More...
 
static void check_sub_modes_of_strict_mode (sql_mode_t &sql_mode, THD *thd)
 Check sql modes strict_mode, 'NO_ZERO_DATE', 'NO_ZERO_IN_DATE' and 'ERROR_FOR_DIVISION_BY_ZERO' are used together. More...
 
export sql_mode_t expand_sql_mode (sql_mode_t sql_mode, THD *thd)
 
static bool check_sql_mode (sys_var *, THD *thd, set_var *var)
 
static bool fix_sql_mode (sys_var *self, THD *thd, enum_var_type type)
 
export bool sql_mode_string_representation (THD *thd, sql_mode_t sql_mode, LEX_STRING *ls)
 
export bool sql_mode_quoted_string_representation (THD *thd, sql_mode_t sql_mode, LEX_STRING *ls)
 
static bool update_fips_mode (sys_var *, THD *, enum_var_type)
 
static bool fix_table_cache_size (sys_var *, THD *, enum_var_type)
 
static bool modify_thread_cache_size (sys_var *, THD *, enum_var_type)
 Modify the thread size cache size. More...
 
static bool check_transaction_isolation (sys_var *, THD *thd, set_var *var)
 Function to check if the 'next' transaction isolation level can be changed. More...
 
static bool check_transaction_read_only (sys_var *, THD *thd, set_var *var)
 Function to check if the state of 'transaction_read_only' can be changed. More...
 
static bool fix_autocommit (sys_var *self, THD *thd, enum_var_type type)
 
static bool fix_sql_log_bin_after_update (sys_var *, THD *thd, enum_var_type type)
 This function sets the session variable thd->variables.sql_log_bin to reflect changes to @session.sql_log_bin. More...
 
static bool check_sql_log_bin (sys_var *self, THD *thd, set_var *var)
 This function checks if the sql_log_bin can be changed, what is possible if: More...
 
static bool update_timestamp (THD *thd, set_var *var)
 
static double read_timestamp (THD *thd)
 
static bool check_timestamp (sys_var *, THD *, set_var *var)
 
static bool update_last_insert_id (THD *thd, set_var *var)
 
static ulonglong read_last_insert_id (THD *thd)
 
static bool update_insert_id (THD *thd, set_var *var)
 
static ulonglong read_insert_id (THD *thd)
 
static bool update_rand_seed1 (THD *thd, set_var *var)
 
static ulonglong read_rand_seed (THD *)
 
static bool update_rand_seed2 (THD *thd, set_var *var)
 
static ulonglong read_error_count (THD *thd)
 
static ulonglong read_warning_count (THD *thd)
 
static bool check_log_path (sys_var *self, THD *, set_var *var)
 
static bool fix_general_log_file (sys_var *, THD *, enum_var_type)
 
static bool fix_slow_log_file (sys_var *, THD *thd, enum_var_type)
 
static SHOW_COMP_OPTION have_ssl_func (THD *thd)
 
static bool fix_general_log_state (sys_var *, THD *thd, enum_var_type)
 
static bool fix_slow_log_state (sys_var *, THD *thd, enum_var_type)
 
static bool check_slow_log_extra (sys_var *, THD *thd, set_var *)
 
static bool check_not_empty_set (sys_var *, THD *, set_var *var)
 
static bool fix_log_output (sys_var *, THD *, enum_var_type)
 
static bool fix_slave_net_timeout (sys_var *, THD *thd, enum_var_type)
 
static bool check_slave_skip_counter (sys_var *, THD *, set_var *)
 
static bool check_locale (sys_var *self, THD *thd, set_var *var)
 
static bool fix_host_cache_size (sys_var *, THD *, enum_var_type)
 
const char * fixup_enforce_gtid_consistency_command_line (char *value_arg)
 
static bool check_pseudo_slave_mode (sys_var *self, THD *thd, set_var *var)
 
static bool check_gtid_purged (sys_var *self, THD *thd, set_var *var)
 
static bool check_track_session_sys_vars (sys_var *, THD *thd, set_var *var)
 
static bool update_track_session_sys_vars (sys_var *, THD *thd, enum_var_type type)
 
static bool update_session_track_schema (sys_var *, THD *thd, enum_var_type)
 
static bool update_session_track_tx_info (sys_var *, THD *thd, enum_var_type)
 
static bool update_session_track_state_change (sys_var *, THD *thd, enum_var_type)
 
static bool handle_offline_mode (sys_var *, THD *thd, enum_var_type)
 
static Sys_var_bool Sys_persisted_globals_load (PERSISTED_GLOBALS_LOAD, "When this option is enabled, config file mysqld-auto.cnf is read " "and applied to server, else this file is ignored even if present.", READ_ONLY NON_PERSIST GLOBAL_VAR(persisted_globals_load), CMD_LINE(OPT_ARG), DEFAULT(true), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(0))
 
static bool sysvar_check_authid_string (sys_var *, THD *thd, set_var *var)
 
static bool sysvar_update_mandatory_roles (sys_var *, THD *, enum_var_type)
 
static bool check_resultset_metadata (sys_var *, THD *thd, set_var *var)
 
static bool check_binlog_row_value_options (sys_var *self, THD *thd, set_var *var)
 
static bool check_keyring_access (sys_var *, THD *thd, set_var *)
 
static bool check_default_collation_for_utf8mb4 (sys_var *self, THD *thd, set_var *var)
 
static bool check_group_replication_consistency (sys_var *self, THD *thd, set_var *var)
 
static bool check_binlog_encryption_admin (sys_var *, THD *thd, set_var *)
 
static bool check_set_default_table_encryption_access (sys_var *self, THD *thd, set_var *var)
 
static bool check_set_table_encryption_privilege_access (sys_var *, THD *thd, set_var *)
 

Variables

TYPELIB bool_typelib = {array_elements(bool_values) - 1, "", bool_values, 0}
 
static Sys_var_bool Sys_pfs_enabled ("performance_schema", "Enable the performance schema.", READ_ONLY GLOBAL_VAR(pfs_param.m_enabled), CMD_LINE(OPT_ARG), DEFAULT(true), PFS_TRAILING_PROPERTIES)
 
static Sys_var_charptr Sys_pfs_instrument ("performance_schema_instrument", "Default startup value for a performance schema instrument.", READ_ONLY NOT_VISIBLE GLOBAL_VAR(pfs_param.m_pfs_instrument), CMD_LINE(OPT_ARG, OPT_PFS_INSTRUMENT), IN_FS_CHARSET, DEFAULT(""), PFS_TRAILING_PROPERTIES)
 
static Sys_var_bool Sys_pfs_consumer_events_stages_current ("performance_schema_consumer_events_stages_current", "Default startup value for the events_stages_current consumer.", READ_ONLY NOT_VISIBLE GLOBAL_VAR(pfs_param.m_consumer_events_stages_current_enabled), CMD_LINE(OPT_ARG), DEFAULT(false), PFS_TRAILING_PROPERTIES)
 
static Sys_var_bool Sys_pfs_consumer_events_stages_history ("performance_schema_consumer_events_stages_history", "Default startup value for the events_stages_history consumer.", READ_ONLY NOT_VISIBLE GLOBAL_VAR(pfs_param.m_consumer_events_stages_history_enabled), CMD_LINE(OPT_ARG), DEFAULT(false), PFS_TRAILING_PROPERTIES)
 
static Sys_var_bool Sys_pfs_consumer_events_stages_history_long ("performance_schema_consumer_events_stages_history_long", "Default startup value for the events_stages_history_long consumer.", READ_ONLY NOT_VISIBLE GLOBAL_VAR(pfs_param.m_consumer_events_stages_history_long_enabled), CMD_LINE(OPT_ARG), DEFAULT(false), PFS_TRAILING_PROPERTIES)
 
static Sys_var_bool Sys_pfs_consumer_events_statements_current ("performance_schema_consumer_events_statements_current", "Default startup value for the events_statements_current consumer.", READ_ONLY NOT_VISIBLE GLOBAL_VAR(pfs_param.m_consumer_events_statements_current_enabled), CMD_LINE(OPT_ARG), DEFAULT(true), PFS_TRAILING_PROPERTIES)
 
static Sys_var_bool Sys_pfs_consumer_events_statements_history ("performance_schema_consumer_events_statements_history", "Default startup value for the events_statements_history consumer.", READ_ONLY NOT_VISIBLE GLOBAL_VAR(pfs_param.m_consumer_events_statements_history_enabled), CMD_LINE(OPT_ARG), DEFAULT(true), PFS_TRAILING_PROPERTIES)
 
static Sys_var_bool Sys_pfs_consumer_events_statements_history_long ("performance_schema_consumer_events_statements_history_long", "Default startup value for the events_statements_history_long consumer.", READ_ONLY NOT_VISIBLE GLOBAL_VAR(pfs_param.m_consumer_events_statements_history_long_enabled), CMD_LINE(OPT_ARG), DEFAULT(false), PFS_TRAILING_PROPERTIES)
 
static Sys_var_bool Sys_pfs_consumer_events_transactions_current ("performance_schema_consumer_events_transactions_current", "Default startup value for the events_transactions_current consumer.", READ_ONLY NOT_VISIBLE GLOBAL_VAR(pfs_param.m_consumer_events_transactions_current_enabled), CMD_LINE(OPT_ARG), DEFAULT(true), PFS_TRAILING_PROPERTIES)
 
static Sys_var_bool Sys_pfs_consumer_events_transactions_history ("performance_schema_consumer_events_transactions_history", "Default startup value for the events_transactions_history consumer.", READ_ONLY NOT_VISIBLE GLOBAL_VAR(pfs_param.m_consumer_events_transactions_history_enabled), CMD_LINE(OPT_ARG), DEFAULT(true), PFS_TRAILING_PROPERTIES)
 
static Sys_var_bool Sys_pfs_consumer_events_transactions_history_long ("performance_schema_consumer_events_transactions_history_long", "Default startup value for the events_transactions_history_long consumer.", READ_ONLY NOT_VISIBLE GLOBAL_VAR(pfs_param.m_consumer_events_transactions_history_long_enabled), CMD_LINE(OPT_ARG), DEFAULT(false), PFS_TRAILING_PROPERTIES)
 
static Sys_var_bool Sys_pfs_consumer_events_waits_current ("performance_schema_consumer_events_waits_current", "Default startup value for the events_waits_current consumer.", READ_ONLY NOT_VISIBLE GLOBAL_VAR(pfs_param.m_consumer_events_waits_current_enabled), CMD_LINE(OPT_ARG), DEFAULT(false), PFS_TRAILING_PROPERTIES)
 
static Sys_var_bool Sys_pfs_consumer_events_waits_history ("performance_schema_consumer_events_waits_history", "Default startup value for the events_waits_history consumer.", READ_ONLY NOT_VISIBLE GLOBAL_VAR(pfs_param.m_consumer_events_waits_history_enabled), CMD_LINE(OPT_ARG), DEFAULT(false), PFS_TRAILING_PROPERTIES)
 
static Sys_var_bool Sys_pfs_consumer_events_waits_history_long ("performance_schema_consumer_events_waits_history_long", "Default startup value for the events_waits_history_long consumer.", READ_ONLY NOT_VISIBLE GLOBAL_VAR(pfs_param.m_consumer_events_waits_history_long_enabled), CMD_LINE(OPT_ARG), DEFAULT(false), PFS_TRAILING_PROPERTIES)
 
static Sys_var_bool Sys_pfs_consumer_global_instrumentation ("performance_schema_consumer_global_instrumentation", "Default startup value for the global_instrumentation consumer.", READ_ONLY NOT_VISIBLE GLOBAL_VAR(pfs_param.m_consumer_global_instrumentation_enabled), CMD_LINE(OPT_ARG), DEFAULT(true), PFS_TRAILING_PROPERTIES)
 
static Sys_var_bool Sys_pfs_consumer_thread_instrumentation ("performance_schema_consumer_thread_instrumentation", "Default startup value for the thread_instrumentation consumer.", READ_ONLY NOT_VISIBLE GLOBAL_VAR(pfs_param.m_consumer_thread_instrumentation_enabled), CMD_LINE(OPT_ARG), DEFAULT(true), PFS_TRAILING_PROPERTIES)
 
static Sys_var_bool Sys_pfs_consumer_statement_digest ("performance_schema_consumer_statements_digest", "Default startup value for the statements_digest consumer.", READ_ONLY NOT_VISIBLE GLOBAL_VAR(pfs_param.m_consumer_statement_digest_enabled), CMD_LINE(OPT_ARG), DEFAULT(true), PFS_TRAILING_PROPERTIES)
 
static Sys_var_long Sys_pfs_events_waits_history_long_size ("performance_schema_events_waits_history_long_size", "Number of rows in EVENTS_WAITS_HISTORY_LONG." " Use 0 to disable, -1 for automated sizing.", READ_ONLY GLOBAL_VAR(pfs_param.m_events_waits_history_long_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(-1, 1024 *1024), DEFAULT(PFS_AUTOSIZE_VALUE), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_long Sys_pfs_events_waits_history_size ("performance_schema_events_waits_history_size", "Number of rows per thread in EVENTS_WAITS_HISTORY." " Use 0 to disable, -1 for automated sizing.", READ_ONLY GLOBAL_VAR(pfs_param.m_events_waits_history_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(-1, 1024), DEFAULT(PFS_AUTOSIZE_VALUE), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_ulong Sys_pfs_max_cond_classes ("performance_schema_max_cond_classes", "Maximum number of condition instruments.", READ_ONLY GLOBAL_VAR(pfs_param.m_cond_class_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, 1024), DEFAULT(PFS_MAX_COND_CLASS), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_long Sys_pfs_max_cond_instances ("performance_schema_max_cond_instances", "Maximum number of instrumented condition objects." " Use 0 to disable, -1 for automated scaling.", READ_ONLY GLOBAL_VAR(pfs_param.m_cond_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(-1, 1024 *1024), DEFAULT(PFS_AUTOSCALE_VALUE), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_long Sys_pfs_max_program_instances ("performance_schema_max_program_instances", "Maximum number of instrumented programs." " Use 0 to disable, -1 for automated scaling.", READ_ONLY GLOBAL_VAR(pfs_param.m_program_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(-1, 1024 *1024), DEFAULT(PFS_AUTOSCALE_VALUE), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_long Sys_pfs_max_prepared_stmt_instances ("performance_schema_max_prepared_statements_instances", "Maximum number of instrumented prepared statements." " Use 0 to disable, -1 for automated scaling.", READ_ONLY GLOBAL_VAR(pfs_param.m_prepared_stmt_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(-1, 1024 *1024), DEFAULT(PFS_AUTOSCALE_VALUE), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_ulong Sys_pfs_max_file_classes ("performance_schema_max_file_classes", "Maximum number of file instruments.", READ_ONLY GLOBAL_VAR(pfs_param.m_file_class_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, 1024), DEFAULT(PFS_MAX_FILE_CLASS), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_ulong Sys_pfs_max_file_handles ("performance_schema_max_file_handles", "Maximum number of opened instrumented files.", READ_ONLY GLOBAL_VAR(pfs_param.m_file_handle_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, 1024 *1024), DEFAULT(PFS_MAX_FILE_HANDLE), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_long Sys_pfs_max_file_instances ("performance_schema_max_file_instances", "Maximum number of instrumented files." " Use 0 to disable, -1 for automated scaling.", READ_ONLY GLOBAL_VAR(pfs_param.m_file_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(-1, 1024 *1024), DEFAULT(PFS_AUTOSCALE_VALUE), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_long Sys_pfs_max_sockets ("performance_schema_max_socket_instances", "Maximum number of opened instrumented sockets." " Use 0 to disable, -1 for automated scaling.", READ_ONLY GLOBAL_VAR(pfs_param.m_socket_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(-1, 1024 *1024), DEFAULT(PFS_AUTOSCALE_VALUE), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_ulong Sys_pfs_max_socket_classes ("performance_schema_max_socket_classes", "Maximum number of socket instruments.", READ_ONLY GLOBAL_VAR(pfs_param.m_socket_class_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, 1024), DEFAULT(PFS_MAX_SOCKET_CLASS), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_ulong Sys_pfs_max_mutex_classes ("performance_schema_max_mutex_classes", "Maximum number of mutex instruments.", READ_ONLY GLOBAL_VAR(pfs_param.m_mutex_class_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, 1024), DEFAULT(PFS_MAX_MUTEX_CLASS), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_long Sys_pfs_max_mutex_instances ("performance_schema_max_mutex_instances", "Maximum number of instrumented MUTEX objects." " Use 0 to disable, -1 for automated scaling.", READ_ONLY GLOBAL_VAR(pfs_param.m_mutex_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(-1, 100 *1024 *1024), DEFAULT(PFS_AUTOSCALE_VALUE), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_ulong Sys_pfs_max_rwlock_classes ("performance_schema_max_rwlock_classes", "Maximum number of rwlock instruments.", READ_ONLY GLOBAL_VAR(pfs_param.m_rwlock_class_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, 1024), DEFAULT(PFS_MAX_RWLOCK_CLASS), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_long Sys_pfs_max_rwlock_instances ("performance_schema_max_rwlock_instances", "Maximum number of instrumented RWLOCK objects." " Use 0 to disable, -1 for automated scaling.", READ_ONLY GLOBAL_VAR(pfs_param.m_rwlock_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(-1, 100 *1024 *1024), DEFAULT(PFS_AUTOSCALE_VALUE), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_long Sys_pfs_max_table_handles ("performance_schema_max_table_handles", "Maximum number of opened instrumented tables." " Use 0 to disable, -1 for automated scaling.", READ_ONLY GLOBAL_VAR(pfs_param.m_table_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(-1, 1024 *1024), DEFAULT(PFS_AUTOSCALE_VALUE), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_long Sys_pfs_max_table_instances ("performance_schema_max_table_instances", "Maximum number of instrumented tables." " Use 0 to disable, -1 for automated scaling.", READ_ONLY GLOBAL_VAR(pfs_param.m_table_share_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(-1, 1024 *1024), DEFAULT(PFS_AUTOSCALE_VALUE), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_long Sys_pfs_max_table_lock_stat ("performance_schema_max_table_lock_stat", "Maximum number of lock statistics for instrumented tables." " Use 0 to disable, -1 for automated scaling.", READ_ONLY GLOBAL_VAR(pfs_param.m_table_lock_stat_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(-1, 1024 *1024), DEFAULT(PFS_AUTOSCALE_VALUE), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_long Sys_pfs_max_index_stat ("performance_schema_max_index_stat", "Maximum number of index statistics for instrumented tables." " Use 0 to disable, -1 for automated scaling.", READ_ONLY GLOBAL_VAR(pfs_param.m_index_stat_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(-1, 1024 *1024), DEFAULT(PFS_AUTOSCALE_VALUE), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_ulong Sys_pfs_max_thread_classes ("performance_schema_max_thread_classes", "Maximum number of thread instruments.", READ_ONLY GLOBAL_VAR(pfs_param.m_thread_class_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, 1024), DEFAULT(PFS_MAX_THREAD_CLASS), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_long Sys_pfs_max_thread_instances ("performance_schema_max_thread_instances", "Maximum number of instrumented threads." " Use 0 to disable, -1 for automated scaling.", READ_ONLY GLOBAL_VAR(pfs_param.m_thread_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(-1, 1024 *1024), DEFAULT(PFS_AUTOSCALE_VALUE), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_long Sys_pfs_setup_actors_size ("performance_schema_setup_actors_size", "Maximum number of rows in SETUP_ACTORS." " Use 0 to disable, -1 for automated scaling.", READ_ONLY GLOBAL_VAR(pfs_param.m_setup_actor_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(-1, 1024 *1024), DEFAULT(PFS_AUTOSCALE_VALUE), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_long Sys_pfs_setup_objects_size ("performance_schema_setup_objects_size", "Maximum number of rows in SETUP_OBJECTS." " Use 0 to disable, -1 for automated scaling.", READ_ONLY GLOBAL_VAR(pfs_param.m_setup_object_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(-1, 1024 *1024), DEFAULT(PFS_AUTOSCALE_VALUE), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_long Sys_pfs_accounts_size ("performance_schema_accounts_size", "Maximum number of instrumented user@host accounts." " Use 0 to disable, -1 for automated scaling.", READ_ONLY GLOBAL_VAR(pfs_param.m_account_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(-1, 1024 *1024), DEFAULT(PFS_AUTOSCALE_VALUE), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_long Sys_pfs_hosts_size ("performance_schema_hosts_size", "Maximum number of instrumented hosts." " Use 0 to disable, -1 for automated scaling.", READ_ONLY GLOBAL_VAR(pfs_param.m_host_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(-1, 1024 *1024), DEFAULT(PFS_AUTOSCALE_VALUE), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_long Sys_pfs_users_size ("performance_schema_users_size", "Maximum number of instrumented users." " Use 0 to disable, -1 for automated scaling.", READ_ONLY GLOBAL_VAR(pfs_param.m_user_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(-1, 1024 *1024), DEFAULT(PFS_AUTOSCALE_VALUE), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_ulong Sys_pfs_max_stage_classes ("performance_schema_max_stage_classes", "Maximum number of stage instruments.", READ_ONLY GLOBAL_VAR(pfs_param.m_stage_class_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, 1024), DEFAULT(PFS_MAX_STAGE_CLASS), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_long Sys_pfs_events_stages_history_long_size ("performance_schema_events_stages_history_long_size", "Number of rows in EVENTS_STAGES_HISTORY_LONG." " Use 0 to disable, -1 for automated sizing.", READ_ONLY GLOBAL_VAR(pfs_param.m_events_stages_history_long_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(-1, 1024 *1024), DEFAULT(PFS_AUTOSIZE_VALUE), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_long Sys_pfs_events_stages_history_size ("performance_schema_events_stages_history_size", "Number of rows per thread in EVENTS_STAGES_HISTORY." " Use 0 to disable, -1 for automated sizing.", READ_ONLY GLOBAL_VAR(pfs_param.m_events_stages_history_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(-1, 1024), DEFAULT(PFS_AUTOSIZE_VALUE), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_ulong Sys_pfs_max_statement_classes ("performance_schema_max_statement_classes", "Maximum number of statement instruments.", READ_ONLY GLOBAL_VAR(pfs_param.m_statement_class_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, 256), DEFAULT((ulong) SQLCOM_END+(ulong) COM_END+5+SP_PSI_STATEMENT_INFO_COUNT+CLONE_PSI_STATEMENT_COUNT), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 Variable performance_schema_max_statement_classes. More...
 
static Sys_var_long Sys_pfs_events_statements_history_long_size ("performance_schema_events_statements_history_long_size", "Number of rows in EVENTS_STATEMENTS_HISTORY_LONG." " Use 0 to disable, -1 for automated sizing.", READ_ONLY GLOBAL_VAR(pfs_param.m_events_statements_history_long_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(-1, 1024 *1024), DEFAULT(PFS_AUTOSIZE_VALUE), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_long Sys_pfs_events_statements_history_size ("performance_schema_events_statements_history_size", "Number of rows per thread in EVENTS_STATEMENTS_HISTORY." " Use 0 to disable, -1 for automated sizing.", READ_ONLY GLOBAL_VAR(pfs_param.m_events_statements_history_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(-1, 1024), DEFAULT(PFS_AUTOSIZE_VALUE), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_ulong Sys_pfs_statement_stack_size ("performance_schema_max_statement_stack", "Number of rows per thread in EVENTS_STATEMENTS_CURRENT.", READ_ONLY GLOBAL_VAR(pfs_param.m_statement_stack_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(1, 256), DEFAULT(PFS_STATEMENTS_STACK_SIZE), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_ulong Sys_pfs_max_memory_classes ("performance_schema_max_memory_classes", "Maximum number of memory pool instruments.", READ_ONLY GLOBAL_VAR(pfs_param.m_memory_class_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, 1024), DEFAULT(PFS_MAX_MEMORY_CLASS), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_long Sys_pfs_digest_size ("performance_schema_digests_size", "Size of the statement digest." " Use 0 to disable, -1 for automated sizing.", READ_ONLY GLOBAL_VAR(pfs_param.m_digest_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(-1, 1024 *1024), DEFAULT(PFS_AUTOSIZE_VALUE), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_long Sys_pfs_events_transactions_history_long_size ("performance_schema_events_transactions_history_long_size", "Number of rows in EVENTS_TRANSACTIONS_HISTORY_LONG." " Use 0 to disable, -1 for automated sizing.", READ_ONLY GLOBAL_VAR(pfs_param.m_events_transactions_history_long_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(-1, 1024 *1024), DEFAULT(PFS_AUTOSIZE_VALUE), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_long Sys_pfs_events_transactions_history_size ("performance_schema_events_transactions_history_size", "Number of rows per thread in EVENTS_TRANSACTIONS_HISTORY." " Use 0 to disable, -1 for automated sizing.", READ_ONLY GLOBAL_VAR(pfs_param.m_events_transactions_history_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(-1, 1024), DEFAULT(PFS_AUTOSIZE_VALUE), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_long Sys_pfs_max_digest_length ("performance_schema_max_digest_length", "Maximum length considered for digest text, when stored in " "performance_schema tables.", READ_ONLY GLOBAL_VAR(pfs_param.m_max_digest_length), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, 1024 *1024), DEFAULT(1024), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_ulong Sys_pfs_max_digest_sample_age ("performance_schema_max_digest_sample_age", "The time in seconds after which a previous query sample is considered old." " When the value is 0, queries are sampled once." " When the value is greater than zero, queries are re sampled if the" " last sample is more than performance_schema_max_digest_sample_age " "seconds old.", GLOBAL_VAR(pfs_param.m_max_digest_sample_age), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, 1024 *1024), DEFAULT(60), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_long Sys_pfs_connect_attrs_size ("performance_schema_session_connect_attrs_size", "Size of session attribute string buffer per thread." " Use 0 to disable, -1 for automated sizing.", READ_ONLY GLOBAL_VAR(pfs_param.m_session_connect_attrs_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(-1, 1024 *1024), DEFAULT(PFS_AUTOSIZE_VALUE), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_long Sys_pfs_max_metadata_locks ("performance_schema_max_metadata_locks", "Maximum number of metadata locks." " Use 0 to disable, -1 for automated scaling.", READ_ONLY GLOBAL_VAR(pfs_param.m_metadata_lock_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(-1, 100 *1024 *1024), DEFAULT(PFS_AUTOSCALE_VALUE), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_long Sys_pfs_max_sql_text_length ("performance_schema_max_sql_text_length", "Maximum length of displayed sql text.", READ_ONLY GLOBAL_VAR(pfs_param.m_max_sql_text_length), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, 1024 *1024), DEFAULT(1024), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_long Sys_pfs_error_size ("performance_schema_error_size", "Number of server errors instrumented.", READ_ONLY GLOBAL_VAR(pfs_param.m_error_sizing), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, 1024 *1024), DEFAULT(PFS_MAX_SERVER_ERRORS), BLOCK_SIZE(1), PFS_TRAILING_PROPERTIES)
 
static Sys_var_ulong Sys_auto_increment_increment ("auto_increment_increment", "Auto-increment columns are incremented by this", HINT_UPDATEABLE SESSION_VAR(auto_increment_increment), CMD_LINE(OPT_ARG), VALID_RANGE(1, 65535), DEFAULT(1), BLOCK_SIZE(1), NO_MUTEX_GUARD, IN_BINLOG, ON_CHECK(check_session_admin))
 
static Sys_var_ulong Sys_auto_increment_offset ("auto_increment_offset", "Offset added to Auto-increment columns. Used when " "auto-increment-increment != 1", HINT_UPDATEABLE SESSION_VAR(auto_increment_offset), CMD_LINE(OPT_ARG), VALID_RANGE(1, 65535), DEFAULT(1), BLOCK_SIZE(1), NO_MUTEX_GUARD, IN_BINLOG, ON_CHECK(check_session_admin))
 
static Sys_var_bool Sys_windowing_use_high_precision ("windowing_use_high_precision", "For SQL window functions, determines whether to enable inversion " "optimization for moving window frames also for floating values.", HINT_UPDATEABLE SESSION_VAR(windowing_use_high_precision), CMD_LINE(OPT_ARG), DEFAULT(true))
 
static Sys_var_uint Sys_cte_max_recursion_depth ("cte_max_recursion_depth", "Abort a recursive common table expression " "if it does more than this number of iterations.", HINT_UPDATEABLE SESSION_VAR(cte_max_recursion_depth), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, UINT_MAX32), DEFAULT(1000), BLOCK_SIZE(1))
 
static Sys_var_bool Sys_automatic_sp_privileges ("automatic_sp_privileges", "Creating and dropping stored procedures alters ACLs", GLOBAL_VAR(sp_automatic_privileges), CMD_LINE(OPT_ARG), DEFAULT(true))
 
static Sys_var_ulong Sys_back_log ("back_log", "The number of outstanding connection requests " "MySQL can have. This comes into play when the main MySQL thread " "gets very many connection requests in a very short time", READ_ONLY GLOBAL_VAR(back_log), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, 65535), DEFAULT(0), BLOCK_SIZE(1))
 
static Sys_var_charptr Sys_basedir ("basedir", "Path to installation directory. All paths are " "usually resolved relative to this", READ_ONLY NON_PERSIST GLOBAL_VAR(mysql_home_ptr), CMD_LINE(REQUIRED_ARG, 'b'), IN_FS_CHARSET, DEFAULT(0))
 
static Sys_var_charptr Sys_default_authentication_plugin ("default_authentication_plugin", "The default authentication plugin " "used by the server to hash the password.", READ_ONLY NON_PERSIST GLOBAL_VAR(default_auth_plugin), CMD_LINE(REQUIRED_ARG), IN_FS_CHARSET, DEFAULT("caching_sha2_password"))
 
static PolyLock_mutex Plock_default_password_lifetime & LOCK_default_password_lifetime
 
static Sys_var_uint Sys_default_password_lifetime ("default_password_lifetime", "The number of days after which the " "password will expire.", GLOBAL_VAR(default_password_lifetime), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, UINT_MAX16), DEFAULT(0), BLOCK_SIZE(1), &Plock_default_password_lifetime)
 
static Sys_var_charptr Sys_my_bind_addr ("bind_address", "IP address(es) to bind to. Syntax: address[,address]...," " where address can be an IPv4 address, IPv6 address," " host name or one of the wildcard values *, ::, 0.0.0.0." " In case more than one address is specified in a" " comma-separated list, wildcard values are not allowed." " Every address can have optional network namespace separated" " by the delimiter / from the address value. E.g., the following value" " 192.168.1.1/red,172.16.1.1/green,193.168.1.1 specifies three IP" " addresses to listen for incoming TCP connections two of that have" " to be placed in corresponding namespaces: the address 192.168.1.1" " must be placed into the namespace red and the address 172.16.1.1" " must be placed into the namespace green. Using of network namespace" " requires its support from underlying Operating System. Attempt to specify" " a network namespace for a platform that doesn't support it results in" " error during socket creation.", READ_ONLY NON_PERSIST GLOBAL_VAR(my_bind_addr_str), CMD_LINE(REQUIRED_ARG), IN_FS_CHARSET, DEFAULT(MY_BIND_ALL_ADDRESSES))
 
static Sys_var_charptr Sys_admin_addr ("admin_address", "IP address to bind to for service connection. Address can be an IPv4" " address, IPv6 address, or host name. Wildcard values *, ::, 0.0.0.0" " are not allowed. Address value can have following optional network" " namespace separated by the delimiter / from the address value." " E.g., the following value 192.168.1.1/red specifies IP addresses to" " listen for incoming TCP connections that have to be placed into" " the namespace 'red'. Using of network namespace requires its support" " from underlying Operating System. Attempt to specify a network namespace" " for a platform that doesn't support it results in error during socket" " creation.", READ_ONLY NON_PERSIST GLOBAL_VAR(my_admin_bind_addr_str), CMD_LINE(REQUIRED_ARG), IN_FS_CHARSET, DEFAULT(0))
 
static Sys_var_uint Sys_admin_port ("admin_port", "Port number to use for service connection," " built-in default (" STRINGIFY_ARG(MYSQL_ADMIN_PORT) ")", READ_ONLY NON_PERSIST GLOBAL_VAR(mysqld_admin_port), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, 65535), DEFAULT(MYSQL_ADMIN_PORT), BLOCK_SIZE(1))
 
static Sys_var_bool Sys_use_separate_thread_for_admin ("create_admin_listener_thread", "Use a dedicated thread for listening incoming connections on admin" " interface", READ_ONLY NON_PERSIST GLOBAL_VAR(listen_admin_interface_in_separate_thread), CMD_LINE(OPT_ARG), DEFAULT(false))
 
static Sys_var_bool Sys_password_require_current ("password_require_current", "Current password is needed to be specified in order to change it", GLOBAL_VAR(password_require_current), CMD_LINE(OPT_ARG), DEFAULT(false))
 
static Sys_var_bool Sys_partial_revokes ("partial_revokes", "Access of database objects can be restricted, " "even if user has global privileges granted.", GLOBAL_VAR(opt_partial_revokes), CMD_LINE(OPT_ARG), DEFAULT(DEFAULT_PARTIAL_REVOKES), NO_MUTEX_GUARD, IN_BINLOG, ON_CHECK(check_partial_revokes), ON_UPDATE(partial_revokes_update), 0, sys_var::PARSE_EARLY)
 
static Sys_var_ulong Sys_binlog_cache_size ("binlog_cache_size", "The size of the transactional cache for " "updates to transactional engines for the binary log. " "If you often use transactions containing many statements, " "you can increase this to get more performance", GLOBAL_VAR(binlog_cache_size), CMD_LINE(REQUIRED_ARG), VALID_RANGE(IO_SIZE, ULONG_MAX), DEFAULT(32768), BLOCK_SIZE(IO_SIZE), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(fix_binlog_cache_size))
 
static Sys_var_ulong Sys_binlog_stmt_cache_size ("binlog_stmt_cache_size", "The size of the statement cache for " "updates to non-transactional engines for the binary log. " "If you often use statements updating a great number of rows, " "you can increase this to get more performance", GLOBAL_VAR(binlog_stmt_cache_size), CMD_LINE(REQUIRED_ARG), VALID_RANGE(IO_SIZE, ULONG_MAX), DEFAULT(32768), BLOCK_SIZE(IO_SIZE), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(fix_binlog_stmt_cache_size))
 
static Sys_var_int32 Sys_binlog_max_flush_queue_time ("binlog_max_flush_queue_time", "The maximum time that the binary log group commit will keep reading" " transactions before it flush the transactions to the binary log (and" " optionally sync, depending on the value of sync_binlog).", GLOBAL_VAR(opt_binlog_max_flush_queue_time), CMD_LINE(REQUIRED_ARG, OPT_BINLOG_MAX_FLUSH_QUEUE_TIME), VALID_RANGE(0, 100000), DEFAULT(0), BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(0), DEPRECATED_VAR(""))
 
static Sys_var_long Sys_binlog_group_commit_sync_delay ("binlog_group_commit_sync_delay", "The number of microseconds the server waits for the " "binary log group commit sync queue to fill before " "continuing. Default: 0. Min: 0. Max: 1000000.", GLOBAL_VAR(opt_binlog_group_commit_sync_delay), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, 1000000), DEFAULT(0), BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG)
 
static Sys_var_ulong Sys_binlog_group_commit_sync_no_delay_count ("binlog_group_commit_sync_no_delay_count", "If there are this many transactions in the commit sync " "queue and the server is waiting for more transactions " "to be enqueued (as set using --binlog-group-commit-sync-delay), " "the commit procedure resumes.", GLOBAL_VAR(opt_binlog_group_commit_sync_no_delay_count), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, 100000), DEFAULT(0), BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG)
 
static Sys_var_test_flag Sys_core_file ("core_file", "write a core-file on crashes", TEST_CORE_ON_SIGNAL)
 
static Sys_var_enum Sys_binlog_format ("binlog_format", "What form of binary logging the master will " "use: either ROW for row-based binary logging, STATEMENT " "for statement-based binary logging, or MIXED. MIXED is statement-" "based binary logging except for those statements where only row-" "based is correct: those which involve user-defined functions (i.e. " "UDFs) or the UUID() function; for those, row-based binary logging is " "automatically used. If NDBCLUSTER is enabled and binlog-format is " "MIXED, the format switches to row-based and back implicitly per each " "query accessing an NDBCLUSTER table", SESSION_VAR(binlog_format), CMD_LINE(REQUIRED_ARG, OPT_BINLOG_FORMAT), binlog_format_names, DEFAULT(BINLOG_FORMAT_ROW), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(binlog_format_check), ON_UPDATE(fix_binlog_format_after_update))
 
static const char * rbr_exec_mode_names [] = {"STRICT", "IDEMPOTENT", 0}
 
static Sys_var_enum rbr_exec_mode ("rbr_exec_mode", "Modes for how row events should be executed. Legal values " "are STRICT (default) and IDEMPOTENT. In IDEMPOTENT mode, " "the server will not throw errors for operations that are idempotent. " "In STRICT mode, server will throw errors for the operations that " "cause a conflict.", SESSION_VAR(rbr_exec_mode_options), NO_CMD_LINE, rbr_exec_mode_names, DEFAULT(RBR_EXEC_MODE_STRICT), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(prevent_global_rbr_exec_mode_idempotent), ON_UPDATE(NULL))
 
static const char * binlog_row_image_names []
 
static Sys_var_enum Sys_binlog_row_image ("binlog_row_image", "Controls whether rows should be logged in 'FULL', 'NOBLOB' or " "'MINIMAL' formats. 'FULL', means that all columns in the before " "and after image are logged. 'NOBLOB', means that mysqld avoids logging " "blob columns whenever possible (eg, blob column was not changed or " "is not part of primary key). 'MINIMAL', means that a PK equivalent (PK " "columns or full row if there is no PK in the table) is logged in the " "before image, and only changed columns are logged in the after image. " "(Default: FULL).", SESSION_VAR(binlog_row_image), CMD_LINE(REQUIRED_ARG), binlog_row_image_names, DEFAULT(BINLOG_ROW_IMAGE_FULL), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_binlog_row_image), ON_UPDATE(NULL))
 
static const char * binlog_row_metadata_names [] = {"MINIMAL", "FULL", NullS}
 
static Sys_var_enum Sys_binlog_row_metadata ("binlog_row_metadata", "Controls whether metadata is logged using FULL or MINIMAL format. " "FULL causes all metadata to be logged; MINIMAL means that only " "metadata actually required by slave is logged. Default: MINIMAL.", GLOBAL_VAR(binlog_row_metadata), CMD_LINE(REQUIRED_ARG), binlog_row_metadata_names, DEFAULT(BINLOG_ROW_METADATA_MINIMAL), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(NULL), ON_UPDATE(NULL))
 
static const char * session_track_gtids_names []
 
static Sys_var_enum Sys_session_track_gtids ("session_track_gtids", "Controls the amount of global transaction ids to be " "included in the response packet sent by the server." "(Default: OFF).", SESSION_VAR(session_track_gtids), CMD_LINE(REQUIRED_ARG), session_track_gtids_names, DEFAULT(OFF), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_outside_trx), ON_UPDATE(on_session_track_gtids_update))
 
static Sys_var_bool Sys_binlog_direct ("binlog_direct_non_transactional_updates", "Causes updates to non-transactional engines using statement format to " "be written directly to binary log. Before using this option make sure " "that there are no dependencies between transactional and " "non-transactional tables such as in the statement INSERT INTO t_myisam " "SELECT * FROM t_innodb; otherwise, slaves may diverge from the master.", SESSION_VAR(binlog_direct_non_trans_update), CMD_LINE(OPT_ARG), DEFAULT(false), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(binlog_direct_check))
 
static Sys_var_bool Sys_explicit_defaults_for_timestamp ("explicit_defaults_for_timestamp", "This option causes CREATE TABLE to create all TIMESTAMP columns " "as NULL with DEFAULT NULL attribute, Without this option, " "TIMESTAMP columns are NOT NULL and have implicit DEFAULT clauses. " "The old behavior is deprecated. " "The variable can only be set by users having the SUPER privilege.", SESSION_VAR(explicit_defaults_for_timestamp), CMD_LINE(OPT_ARG), DEFAULT(true), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_explicit_defaults_for_timestamp))
 This variable is read only to users. More...
 
static const char * repository_names []
 
ulong opt_mi_repository_id = INFO_REPOSITORY_TABLE
 
static Sys_var_enum Sys_mi_repository ("master_info_repository", "Defines the type of the repository for the master information.", GLOBAL_VAR(opt_mi_repository_id), CMD_LINE(REQUIRED_ARG), repository_names, DEFAULT(INFO_REPOSITORY_TABLE), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(master_info_repository_check), ON_UPDATE(master_info_repository_update))
 
ulong opt_rli_repository_id = INFO_REPOSITORY_TABLE
 
static Sys_var_enum Sys_rli_repository ("relay_log_info_repository", "Defines the type of the repository for the relay log information " "and associated workers.", GLOBAL_VAR(opt_rli_repository_id), CMD_LINE(REQUIRED_ARG), repository_names, DEFAULT(INFO_REPOSITORY_TABLE), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(relay_log_info_repository_check), ON_UPDATE(relay_log_info_repository_update))
 
static Sys_var_bool Sys_binlog_rows_query ("binlog_rows_query_log_events", "Allow writing of Rows_query_log events into binary log.", SESSION_VAR(binlog_rows_query_log_events), CMD_LINE(OPT_ARG), DEFAULT(false), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_session_admin))
 
static Sys_var_bool Sys_binlog_order_commits ("binlog_order_commits", "Issue internal commit calls in the same order as transactions are" " written to the binary log. Default is to order commits.", GLOBAL_VAR(opt_binlog_order_commits), CMD_LINE(OPT_ARG), DEFAULT(true))
 
static Sys_var_ulong Sys_bulk_insert_buff_size ("bulk_insert_buffer_size", "Size of tree cache used in bulk " "insert optimisation. Note that this is a limit per thread!", HINT_UPDATEABLE SESSION_VAR(bulk_insert_buff_size), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, ULONG_MAX), DEFAULT(8192 *1024), BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_session_admin))
 
static Sys_var_charptr Sys_character_sets_dir ("character_sets_dir", "Directory where character sets are", READ_ONLY NON_PERSIST GLOBAL_VAR(charsets_dir), CMD_LINE(REQUIRED_ARG), IN_FS_CHARSET, DEFAULT(0))
 
static CHARSET_INFOcharset_system_default = &my_charset_utf8_general_ci
 
static Sys_var_struct< CHARSET_INFO, Get_csname > Sys_character_set_system ("character_set_system", "The character set used by the server " "for storing identifiers", READ_ONLY NON_PERSIST GLOBAL_VAR(system_charset_info), NO_CMD_LINE, DEFAULT(&charset_system_default))
 
static Sys_var_struct< CHARSET_INFO, Get_csname > Sys_character_set_server ("character_set_server", "The default character set", SESSION_VAR(collation_server), NO_CMD_LINE, DEFAULT(&default_charset_info), NO_MUTEX_GUARD, IN_BINLOG, ON_CHECK(check_charset_not_null))
 
static Sys_var_struct< CHARSET_INFO, Get_csname > Sys_character_set_database ("character_set_database", " The character set used by the default database", SESSION_VAR(collation_database), NO_CMD_LINE, DEFAULT(&default_charset_info), NO_MUTEX_GUARD, IN_BINLOG, ON_CHECK(check_charset_db), ON_UPDATE(update_deprecated))
 
static Sys_var_struct< CHARSET_INFO, Get_csname > Sys_character_set_client ("character_set_client", "The character set for statements " "that arrive from the client", SESSION_VAR(character_set_client), NO_CMD_LINE, DEFAULT(&default_charset_info), NO_MUTEX_GUARD, IN_BINLOG, ON_CHECK(check_cs_client), ON_UPDATE(fix_thd_charset))
 
static Sys_var_struct< CHARSET_INFO, Get_csname > Sys_character_set_connection ("character_set_connection", "The character set used for " "literals that do not have a character set introducer and for " "number-to-string conversion", SESSION_VAR(collation_connection), NO_CMD_LINE, DEFAULT(&default_charset_info), NO_MUTEX_GUARD, IN_BINLOG, ON_CHECK(check_charset_not_null), ON_UPDATE(fix_thd_charset))
 
static Sys_var_struct< CHARSET_INFO, Get_csname > Sys_character_set_results ("character_set_results", "The character set used for returning " "query results to the client", SESSION_VAR(character_set_results), NO_CMD_LINE, DEFAULT(&default_charset_info), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_charset))
 
static Sys_var_struct< CHARSET_INFO, Get_csname > Sys_character_set_filesystem ("character_set_filesystem", "The filesystem character set", SESSION_VAR(character_set_filesystem), NO_CMD_LINE, DEFAULT(&character_set_filesystem), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_cs_filesystem), ON_UPDATE(fix_thd_charset))
 
static const char * completion_type_names []
 
static Sys_var_enum Sys_completion_type ("completion_type", "The transaction completion type, one of " "NO_CHAIN, CHAIN, RELEASE", SESSION_VAR(completion_type), CMD_LINE(REQUIRED_ARG), completion_type_names, DEFAULT(0))
 
static Sys_var_struct< CHARSET_INFO, Get_name > Sys_collation_connection ("collation_connection", "The collation of the connection " "character set", SESSION_VAR(collation_connection), NO_CMD_LINE, DEFAULT(&default_charset_info), NO_MUTEX_GUARD, IN_BINLOG, ON_CHECK(check_collation_not_null), ON_UPDATE(fix_thd_charset))
 
static Sys_var_struct< CHARSET_INFO, Get_name > Sys_collation_database ("collation_database", "The collation of the database " "character set", SESSION_VAR(collation_database), NO_CMD_LINE, DEFAULT(&default_charset_info), NO_MUTEX_GUARD, IN_BINLOG, ON_CHECK(check_collation_db), ON_UPDATE(update_deprecated))
 
static Sys_var_struct< CHARSET_INFO, Get_name > Sys_collation_server ("collation_server", "The server default collation", SESSION_VAR(collation_server), NO_CMD_LINE, DEFAULT(&default_charset_info), NO_MUTEX_GUARD, IN_BINLOG, ON_CHECK(check_collation_not_null))
 
static const char * concurrent_insert_names [] = {"NEVER", "AUTO", "ALWAYS", 0}
 
static Sys_var_enum Sys_concurrent_insert ("concurrent_insert", "Use concurrent insert with MyISAM. Possible " "values are NEVER, AUTO, ALWAYS", GLOBAL_VAR(myisam_concurrent_insert), CMD_LINE(OPT_ARG), concurrent_insert_names, DEFAULT(1))
 
static Sys_var_ulong Sys_connect_timeout ("connect_timeout", "The number of seconds the mysqld server is waiting for a connect " "packet before responding with 'Bad handshake'", GLOBAL_VAR(connect_timeout), CMD_LINE(REQUIRED_ARG), VALID_RANGE(2, LONG_TIMEOUT), DEFAULT(CONNECT_TIMEOUT), BLOCK_SIZE(1))
 
static Sys_var_ulong Sys_information_schema_stats_expiry ("information_schema_stats_expiry", "The number of seconds after which mysqld server will fetch " "data from storage engine and replace the data in cache.", SESSION_VAR(information_schema_stats_expiry), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, LONG_TIMEOUT), DEFAULT(24 *60 *60), BLOCK_SIZE(1))
 
static Sys_var_charptr Sys_datadir ("datadir", "Path to the database root directory", READ_ONLY NON_PERSIST GLOBAL_VAR(mysql_real_data_home_ptr), CMD_LINE(REQUIRED_ARG, 'h'), IN_FS_CHARSET, DEFAULT(mysql_real_data_home))
 
static Sys_var_dbug Sys_dbug ("debug", "Debug log", sys_var::SESSION, CMD_LINE(OPT_ARG, '#'), DEFAULT(""), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_session_admin))
 
static const char * delay_key_write_names [] = {"OFF", "ON", "ALL", NullS}
 
static Sys_var_enum Sys_delay_key_write ("delay_key_write", "Type of DELAY_KEY_WRITE", GLOBAL_VAR(delay_key_write_options), CMD_LINE(OPT_ARG), delay_key_write_names, DEFAULT(DELAY_KEY_WRITE_ON), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(fix_delay_key_write))
 
static Sys_var_ulong Sys_delayed_insert_limit ("delayed_insert_limit", "After inserting delayed_insert_limit rows, the INSERT DELAYED " "handler will check if there are any SELECT statements pending. " "If so, it allows these to execute before continuing. " "This variable is deprecated along with INSERT DELAYED.", GLOBAL_VAR(delayed_insert_limit), CMD_LINE(REQUIRED_ARG), VALID_RANGE(1, ULONG_MAX), DEFAULT(DELAYED_LIMIT), BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(0), DEPRECATED_VAR(""))
 
static Sys_var_ulong Sys_delayed_insert_timeout ("delayed_insert_timeout", "How long a INSERT DELAYED thread should wait for INSERT statements " "before terminating. " "This variable is deprecated along with INSERT DELAYED.", GLOBAL_VAR(delayed_insert_timeout), CMD_LINE(REQUIRED_ARG), VALID_RANGE(1, LONG_TIMEOUT), DEFAULT(DELAYED_WAIT_TIMEOUT), BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(0), DEPRECATED_VAR(""))
 
static Sys_var_ulong Sys_delayed_queue_size ("delayed_queue_size", "What size queue (in rows) should be allocated for handling INSERT " "DELAYED. If the queue becomes full, any client that does INSERT " "DELAYED will wait until there is room in the queue again. " "This variable is deprecated along with INSERT DELAYED.", GLOBAL_VAR(delayed_queue_size), CMD_LINE(REQUIRED_ARG), VALID_RANGE(1, ULONG_MAX), DEFAULT(DELAYED_QUEUE_SIZE), BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(0), DEPRECATED_VAR(""))
 
static const char * event_scheduler_names [] = {"OFF", "ON", "DISABLED", NullS}
 
static Sys_var_enum Sys_event_scheduler ("event_scheduler", "Enable the event scheduler. Possible values are " "ON, OFF, and DISABLED (keep the event scheduler completely " "deactivated, it cannot be activated run-time)", GLOBAL_VAR(Events::opt_event_scheduler), CMD_LINE(OPT_ARG), event_scheduler_names, DEFAULT(Events::EVENTS_ON), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(event_scheduler_check), ON_UPDATE(event_scheduler_update))
 
static Sys_var_ulong Sys_expire_logs_days ("expire_logs_days", "If non-zero, binary logs will be purged after expire_logs_days " "days; If this option alone is set on the command line or in a " "configuration file, it overrides the default value for " "binlog-expire-logs-seconds. If both options are set to nonzero values, " "binlog-expire-logs-seconds takes priority. Possible purges happen at " "startup and at binary log rotation.", GLOBAL_VAR(expire_logs_days), CMD_LINE(REQUIRED_ARG, OPT_EXPIRE_LOGS_DAYS), VALID_RANGE(0, 99), DEFAULT(0), BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_expire_logs_days), ON_UPDATE(NULL), DEPRECATED_VAR("binlog_expire_logs_seconds"))
 
static Sys_var_ulong Sys_binlog_expire_logs_seconds ("binlog_expire_logs_seconds", "If non-zero, binary logs will be purged after binlog_expire_logs_seconds" " seconds; If both this option and expire_logs_days are set to non-zero" " values, this option takes priority. Purges happen at" " startup and at binary log rotation.", GLOBAL_VAR(binlog_expire_logs_seconds), CMD_LINE(REQUIRED_ARG, OPT_BINLOG_EXPIRE_LOGS_SECONDS), VALID_RANGE(0, 0xFFFFFFFF), DEFAULT(2592000), BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_expire_logs_seconds), ON_UPDATE(NULL))
 
static Sys_var_bool Sys_flush ("flush", "Flush MyISAM tables to disk between SQL commands", GLOBAL_VAR(myisam_flush), CMD_LINE(OPT_ARG), DEFAULT(false))
 
static Sys_var_ulong Sys_flush_time ("flush_time", "A dedicated thread is created to flush all tables at the " "given interval", GLOBAL_VAR(flush_time), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, LONG_TIMEOUT), DEFAULT(0), BLOCK_SIZE(1))
 
static Sys_var_charptr Sys_ft_boolean_syntax ("ft_boolean_syntax", "List of operators for " "MATCH ... AGAINST ( ... IN BOOLEAN MODE)", GLOBAL_VAR(ft_boolean_syntax), CMD_LINE(REQUIRED_ARG), IN_SYSTEM_CHARSET, DEFAULT(DEFAULT_FTB_SYNTAX), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_ftb_syntax))
 
static Sys_var_ulong Sys_ft_max_word_len ("ft_max_word_len", "The maximum length of the word to be included in a FULLTEXT index. " "Note: FULLTEXT indexes must be rebuilt after changing this variable", READ_ONLY GLOBAL_VAR(ft_max_word_len), CMD_LINE(REQUIRED_ARG), VALID_RANGE(10, HA_FT_MAXCHARLEN), DEFAULT(HA_FT_MAXCHARLEN), BLOCK_SIZE(1))
 
static Sys_var_ulong Sys_ft_min_word_len ("ft_min_word_len", "The minimum length of the word to be included in a FULLTEXT index. " "Note: FULLTEXT indexes must be rebuilt after changing this variable", READ_ONLY GLOBAL_VAR(ft_min_word_len), CMD_LINE(REQUIRED_ARG), VALID_RANGE(1, HA_FT_MAXCHARLEN), DEFAULT(4), BLOCK_SIZE(1))
 
static Sys_var_ulong Sys_ft_query_expansion_limit ("ft_query_expansion_limit", "Number of best matches to use for query expansion", READ_ONLY GLOBAL_VAR(ft_query_expansion_limit), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, 1000), DEFAULT(20), BLOCK_SIZE(1))
 
static Sys_var_charptr Sys_ft_stopword_file ("ft_stopword_file", "Use stopwords from this file instead of built-in list", READ_ONLY NON_PERSIST GLOBAL_VAR(ft_stopword_file), CMD_LINE(REQUIRED_ARG), IN_FS_CHARSET, DEFAULT(0))
 
static PolyLock_rwlock PLock_sys_init_connect & LOCK_sys_init_connect
 
static Sys_var_lexstring Sys_init_connect ("init_connect", "Command(s) that are executed for each " "new connection", GLOBAL_VAR(opt_init_connect), CMD_LINE(REQUIRED_ARG), IN_SYSTEM_CHARSET, DEFAULT(""), &PLock_sys_init_connect, NOT_IN_BINLOG, ON_CHECK(check_init_string))
 
static Sys_var_charptr Sys_init_file ("init_file", "Read SQL commands from this file at startup", READ_ONLY NON_PERSIST GLOBAL_VAR(opt_init_file), CMD_LINE(REQUIRED_ARG), IN_FS_CHARSET, DEFAULT(0))
 
static PolyLock_rwlock PLock_sys_init_slave & LOCK_sys_init_slave
 
static Sys_var_lexstring Sys_init_slave ("init_slave", "Command(s) that are executed by a slave server " "each time the SQL thread starts", GLOBAL_VAR(opt_init_slave), CMD_LINE(REQUIRED_ARG), IN_SYSTEM_CHARSET, DEFAULT(""), &PLock_sys_init_slave, NOT_IN_BINLOG, ON_CHECK(check_init_string))
 
static Sys_var_ulong Sys_interactive_timeout ("interactive_timeout", "The number of seconds the server waits for activity on an interactive " "connection before closing it", SESSION_VAR(net_interactive_timeout), CMD_LINE(REQUIRED_ARG), VALID_RANGE(1, LONG_TIMEOUT), DEFAULT(NET_WAIT_TIMEOUT), BLOCK_SIZE(1))
 
static Sys_var_ulong Sys_join_buffer_size ("join_buffer_size", "The size of the buffer that is used for full joins", HINT_UPDATEABLE SESSION_VAR(join_buff_size), CMD_LINE(REQUIRED_ARG), VALID_RANGE(128, ULONG_MAX), DEFAULT(256 *1024), BLOCK_SIZE(128))
 
static Sys_var_keycache Sys_key_buffer_size ("key_buffer_size", "The size of the buffer used for " "index blocks for MyISAM tables. Increase this to get better index " "handling (for all reads and multiple writes) to as much as you can " "afford", KEYCACHE_VAR(param_buff_size), CMD_LINE(REQUIRED_ARG, OPT_KEY_BUFFER_SIZE), VALID_RANGE(0, SIZE_T_MAX), DEFAULT(KEY_CACHE_SIZE), BLOCK_SIZE(IO_SIZE), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(update_buffer_size))
 
static Sys_var_keycache Sys_key_cache_block_size ("key_cache_block_size", "The default size of key cache blocks", KEYCACHE_VAR(param_block_size), CMD_LINE(REQUIRED_ARG, OPT_KEY_CACHE_BLOCK_SIZE), VALID_RANGE(512, 1024 *16), DEFAULT(KEY_CACHE_BLOCK_SIZE), BLOCK_SIZE(512), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(update_keycache_param))
 
static Sys_var_keycache Sys_key_cache_division_limit ("key_cache_division_limit", "The minimum percentage of warm blocks in key cache", KEYCACHE_VAR(param_division_limit), CMD_LINE(REQUIRED_ARG, OPT_KEY_CACHE_DIVISION_LIMIT), VALID_RANGE(1, 100), DEFAULT(100), BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(update_keycache_param))
 
static Sys_var_keycache Sys_key_cache_age_threshold ("key_cache_age_threshold", "This characterizes the number of " "hits a hot block has to be untouched until it is considered aged " "enough to be downgraded to a warm block. This specifies the " "percentage ratio of that number of hits to the total number of " "blocks in key cache", KEYCACHE_VAR(param_age_threshold), CMD_LINE(REQUIRED_ARG, OPT_KEY_CACHE_AGE_THRESHOLD), VALID_RANGE(100, ULONG_MAX), DEFAULT(300), BLOCK_SIZE(100), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(update_keycache_param))
 
static Sys_var_bool Sys_large_files_support ("large_files_support", "Whether mysqld was compiled with options for large file support", READ_ONLY NON_PERSIST GLOBAL_VAR(opt_large_files), NO_CMD_LINE, DEFAULT(sizeof(my_off_t) > 4))
 
static Sys_var_uint Sys_large_page_size ("large_page_size", "If large page support is enabled, this shows the size of memory pages", READ_ONLY NON_PERSIST GLOBAL_VAR(opt_large_page_size), NO_CMD_LINE, VALID_RANGE(0, UINT_MAX), DEFAULT(0), BLOCK_SIZE(1))
 
static Sys_var_bool Sys_large_pages ("large_pages", "Enable support for large pages", READ_ONLY GLOBAL_VAR(opt_large_pages), IF_WIN(NO_CMD_LINE, CMD_LINE(OPT_ARG)), DEFAULT(false))
 
static Sys_var_charptr Sys_language ("lc_messages_dir", "Directory where error messages are", READ_ONLY NON_PERSIST GLOBAL_VAR(lc_messages_dir_ptr), CMD_LINE(REQUIRED_ARG, OPT_LC_MESSAGES_DIRECTORY), IN_FS_CHARSET, DEFAULT(0))
 
static Sys_var_bool Sys_local_infile ("local_infile", "Enable LOAD DATA LOCAL INFILE", GLOBAL_VAR(opt_local_infile), CMD_LINE(OPT_ARG), DEFAULT(false))
 
static Sys_var_ulong Sys_lock_wait_timeout ("lock_wait_timeout", "Timeout in seconds to wait for a lock before returning an error.", HINT_UPDATEABLE SESSION_VAR(lock_wait_timeout), CMD_LINE(REQUIRED_ARG), VALID_RANGE(1, LONG_TIMEOUT), DEFAULT(LONG_TIMEOUT), BLOCK_SIZE(1))
 
static Sys_var_bool Sys_log_bin ("log_bin", "Whether the binary log is enabled", READ_ONLY NON_PERSIST GLOBAL_VAR(opt_bin_log), NO_CMD_LINE, DEFAULT(true))
 
static Sys_var_enum Sys_extract_write_set ("transaction_write_set_extraction", "This option is used to let the server know when to " "extract the write set which will be used for various purposes. ", SESSION_VAR(transaction_write_set_extraction), CMD_LINE(OPT_ARG), transaction_write_set_hashing_algorithms, DEFAULT(HASH_ALGORITHM_XXHASH64), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(transaction_write_set_check), ON_UPDATE(NULL))
 
static Sys_var_ulong Sys_rpl_stop_slave_timeout ("rpl_stop_slave_timeout", "Timeout in seconds to wait for slave to stop before returning a " "warning.", GLOBAL_VAR(rpl_stop_slave_timeout), CMD_LINE(REQUIRED_ARG), VALID_RANGE(2, LONG_TIMEOUT), DEFAULT(LONG_TIMEOUT), BLOCK_SIZE(1))
 
static Sys_var_enum Sys_binlog_error_action ("binlog_error_action", "When statements cannot be written to the binary log due to a fatal " "error, the server can either ignore the error and let the master " "continue, or abort.", GLOBAL_VAR(binlog_error_action), CMD_LINE(REQUIRED_ARG), binlog_error_action_list, DEFAULT(ABORT_SERVER))
 
static Sys_var_bool Sys_trust_function_creators ("log_bin_trust_function_creators", "If set to FALSE (the default), then when --log-bin is used, creation " "of a stored function (or trigger) is allowed only to users having the " "SUPER privilege and only if this stored function (trigger) may not " "break binary logging. Note that if ALL connections to this server " "ALWAYS use row-based binary logging, the security issues do not " "exist and the binary logging cannot break, so you can safely set " "this to TRUE", GLOBAL_VAR(trust_function_creators), CMD_LINE(OPT_ARG), DEFAULT(false))
 
static Sys_var_bool Sys_check_proxy_users ("check_proxy_users", "If set to FALSE (the default), then proxy user identity will not be " "mapped for authentication plugins which support mapping from grant " "tables. When set to TRUE, users associated with authentication " "plugins which signal proxy user mapping should be done according to " "GRANT PROXY privilege definition.", GLOBAL_VAR(check_proxy_users), CMD_LINE(OPT_ARG), DEFAULT(false))
 
static Sys_var_bool Sys_mysql_native_password_proxy_users ("mysql_native_password_proxy_users", "If set to FALSE (the default), then the mysql_native_password " "plugin will not signal for authenticated users to be checked for " "mapping " "to proxy users. When set to TRUE, the plugin will flag associated " "authenticated accounts to be mapped to proxy users when the server " "option " "check_proxy_users is enabled.", GLOBAL_VAR(mysql_native_password_proxy_users), CMD_LINE(OPT_ARG), DEFAULT(false))
 
static Sys_var_bool Sys_sha256_password_proxy_users ("sha256_password_proxy_users", "If set to FALSE (the default), then the sha256_password authentication " "plugin will not signal for authenticated users to be checked for " "mapping " "to proxy users. When set to TRUE, the plugin will flag associated " "authenticated accounts to be mapped to proxy users when the server " "option " "check_proxy_users is enabled.", GLOBAL_VAR(sha256_password_proxy_users), CMD_LINE(OPT_ARG), DEFAULT(false))
 
static Sys_var_bool Sys_log_bin_use_v1_row_events ("log_bin_use_v1_row_events", "If equal to 1 then version 1 row events are written to a row based " "binary log. If equal to 0, then the latest version of events are " "written. " "This option is useful during some upgrades.", NON_PERSIST GLOBAL_VAR(log_bin_use_v1_row_events), CMD_LINE(OPT_ARG), DEFAULT(false), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_log_bin_use_v1_row_events))
 
static Sys_var_charptr Sys_log_error ("log_error", "Error log file", READ_ONLY NON_PERSIST GLOBAL_VAR(log_error_dest), CMD_LINE(OPT_ARG, OPT_LOG_ERROR), IN_FS_CHARSET, DEFAULT(disabled_my_option), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(NULL), ON_UPDATE(NULL), NULL, sys_var::PARSE_EARLY)
 
static Sys_var_charptr Sys_log_error_services ("log_error_services", "Services that should be called when an error event is received", GLOBAL_VAR(opt_log_error_services), CMD_LINE(REQUIRED_ARG), IN_SYSTEM_CHARSET, DEFAULT("log_filter_internal; log_sink_internal"), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_log_error_services), ON_UPDATE(fix_log_error_services))
 
static Sys_var_charptr Sys_log_error_suppression_list ("log_error_suppression_list", "Comma-separated list of error-codes. Error messages corresponding to " "these codes will not be included in the error log. Only events with a " "severity of Warning or Information can be suppressed; events with " "System " "or Error severity will always be included. Requires the filter " "\og_filter_internal\to be set in @@global.log_error_services, which " "is the default.", GLOBAL_VAR(opt_log_error_suppression_list), CMD_LINE(REQUIRED_ARG), IN_SYSTEM_CHARSET, DEFAULT(""), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_log_error_suppression_list), ON_UPDATE(fix_log_error_suppression_list))
 
static Sys_var_bool Sys_log_queries_not_using_indexes ("log_queries_not_using_indexes", "Log queries that are executed without benefit of any index to the " "slow log if it is open", GLOBAL_VAR(opt_log_queries_not_using_indexes), CMD_LINE(OPT_ARG), DEFAULT(false))
 
static Sys_var_bool Sys_log_slow_admin_statements ("log_slow_admin_statements", "Log slow OPTIMIZE, ANALYZE, ALTER and other administrative statements " "to " "the slow log if it is open.", GLOBAL_VAR(opt_log_slow_admin_statements), CMD_LINE(OPT_ARG), DEFAULT(false))
 
static Sys_var_bool Sys_log_slow_slave_statements ("log_slow_slave_statements", "Log slow statements executed by slave thread to the slow log if it is " "open.", GLOBAL_VAR(opt_log_slow_slave_statements), CMD_LINE(OPT_ARG), DEFAULT(false))
 
static Sys_var_ulong Sys_log_throttle_queries_not_using_indexes ("log_throttle_queries_not_using_indexes", "Log at most this many 'not using index' warnings per minute to the " "slow log. Any further warnings will be condensed into a single " "summary line. A value of 0 disables throttling. " "Option has no effect unless --log_queries_not_using_indexes is set.", GLOBAL_VAR(opt_log_throttle_queries_not_using_indexes), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, ULONG_MAX), DEFAULT(0), BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(update_log_throttle_queries_not_using_indexes))
 
static Sys_var_ulong Sys_log_error_verbosity ("log_error_verbosity", "How detailed the error log should be. " "1, log errors only. " "2, log errors and warnings. " "3, log errors, warnings, and notes. " "Messages sent to the client are unaffected by this setting.", GLOBAL_VAR(log_error_verbosity), CMD_LINE(REQUIRED_ARG), VALID_RANGE(1, 3), DEFAULT(2), BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(update_log_error_verbosity))
 
static Sys_var_enum Sys_log_timestamps ("log_timestamps", "UTC to timestamp log files in zulu time, for more concise timestamps " "and easier correlation of logs from servers from multiple time zones, " "or SYSTEM to use the system's local time. " "This affects only log files, not log tables, as the timestamp columns " "of the latter can be converted at will.", GLOBAL_VAR(opt_log_timestamps), CMD_LINE(REQUIRED_ARG), timestamp_type_names, DEFAULT(0), NO_MUTEX_GUARD, NOT_IN_BINLOG)
 
static Sys_var_bool Sys_log_statements_unsafe_for_binlog ("log_statements_unsafe_for_binlog", "Log statements considered unsafe when using statement based binary " "logging.", GLOBAL_VAR(opt_log_unsafe_statements), CMD_LINE(OPT_ARG), DEFAULT(true))
 
static Sys_var_double Sys_long_query_time ("long_query_time", "Log all queries that have taken more than long_query_time seconds " "to execute to file. The argument will be treated as a decimal value " "with microsecond precision", SESSION_VAR(long_query_time_double), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, LONG_TIMEOUT), DEFAULT(10), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(update_cached_long_query_time))
 
static Sys_var_bool Sys_low_priority_updates ("low_priority_updates", "INSERT/DELETE/UPDATE has lower priority than selects", SESSION_VAR(low_priority_updates), CMD_LINE(OPT_ARG), DEFAULT(false), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(fix_low_prio_updates))
 
static Sys_var_bool Sys_lower_case_file_system ("lower_case_file_system", "Case sensitivity of file names on the file system where the " "data directory is located", READ_ONLY NON_PERSIST GLOBAL_VAR(lower_case_file_system), NO_CMD_LINE, DEFAULT(false))
 
static Sys_var_uint Sys_lower_case_table_names ("lower_case_table_names", "If set to 1 table names are stored in lowercase on disk and table " "names will be case-insensitive. Should be set to 2 if you are using " "a case insensitive file system", READ_ONLY GLOBAL_VAR(lower_case_table_names), CMD_LINE(OPT_ARG, OPT_LOWER_CASE_TABLE_NAMES), VALID_RANGE(0, 2), DEFAULT(0), BLOCK_SIZE(1))
 
static Sys_var_ulong Sys_max_allowed_packet ("max_allowed_packet", "Max packet length to send to or receive from the server", SESSION_VAR(max_allowed_packet), CMD_LINE(REQUIRED_ARG), VALID_RANGE(1024, 1024 *1024 *1024), DEFAULT(64 *1024 *1024), BLOCK_SIZE(1024), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_max_allowed_packet))
 
static Sys_var_ulong Sys_slave_max_allowed_packet ("slave_max_allowed_packet", "The maximum packet length to sent successfully from the master to " "slave.", GLOBAL_VAR(slave_max_allowed_packet), CMD_LINE(REQUIRED_ARG), VALID_RANGE(1024, MAX_MAX_ALLOWED_PACKET), DEFAULT(MAX_MAX_ALLOWED_PACKET), BLOCK_SIZE(1024))
 
static Sys_var_ulonglong Sys_max_binlog_cache_size ("max_binlog_cache_size", "Sets the total size of the transactional cache", GLOBAL_VAR(max_binlog_cache_size), CMD_LINE(REQUIRED_ARG), VALID_RANGE(IO_SIZE, ULLONG_MAX), DEFAULT((ULLONG_MAX/IO_SIZE) *IO_SIZE), BLOCK_SIZE(IO_SIZE), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(fix_binlog_cache_size))
 
static Sys_var_ulonglong Sys_max_binlog_stmt_cache_size ("max_binlog_stmt_cache_size", "Sets the total size of the statement cache", GLOBAL_VAR(max_binlog_stmt_cache_size), CMD_LINE(REQUIRED_ARG), VALID_RANGE(IO_SIZE, ULLONG_MAX), DEFAULT((ULLONG_MAX/IO_SIZE) *IO_SIZE), BLOCK_SIZE(IO_SIZE), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(fix_binlog_stmt_cache_size))
 
static Sys_var_ulong Sys_max_binlog_size ("max_binlog_size", "Binary log will be rotated automatically when the size exceeds this " "value. Will also apply to relay logs if max_relay_log_size is 0", GLOBAL_VAR(max_binlog_size), CMD_LINE(REQUIRED_ARG), VALID_RANGE(IO_SIZE, 1024 *1024L *1024L), DEFAULT(1024 *1024L *1024L), BLOCK_SIZE(IO_SIZE), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(fix_max_binlog_size))
 
static Sys_var_ulong Sys_max_connections ("max_connections", "The number of simultaneous clients allowed", GLOBAL_VAR(max_connections), CMD_LINE(REQUIRED_ARG), VALID_RANGE(1, 100000), DEFAULT(MAX_CONNECTIONS_DEFAULT), BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(0), NULL, sys_var::PARSE_EARLY)
 
static Sys_var_ulong Sys_max_connect_errors ("max_connect_errors", "If there is more than this number of interrupted connections from " "a host this host will be blocked from further connections", GLOBAL_VAR(max_connect_errors), CMD_LINE(REQUIRED_ARG), VALID_RANGE(1, ULONG_MAX), DEFAULT(100), BLOCK_SIZE(1))
 
static Sys_var_long Sys_max_digest_length ("max_digest_length", "Maximum length considered for digest text.", READ_ONLY GLOBAL_VAR(max_digest_length), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, 1024 *1024), DEFAULT(1024), BLOCK_SIZE(1))
 
static Sys_var_ulong Sys_max_insert_delayed_threads ("max_insert_delayed_threads", "Don't start more than this number of threads to handle INSERT " "DELAYED statements. If set to zero INSERT DELAYED will be not used. " "This variable is deprecated along with INSERT DELAYED.", SESSION_VAR(max_insert_delayed_threads), NO_CMD_LINE, VALID_RANGE(0, 16384), DEFAULT(20), BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_max_delayed_threads), ON_UPDATE(0), DEPRECATED_VAR(""))
 
static Sys_var_ulong Sys_max_delayed_threads ("max_delayed_threads", "Don't start more than this number of threads to handle INSERT " "DELAYED statements. If set to zero INSERT DELAYED will be not used. " "This variable is deprecated along with INSERT DELAYED.", SESSION_VAR(max_insert_delayed_threads), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, 16384), DEFAULT(20), BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_max_delayed_threads), ON_UPDATE(0), DEPRECATED_VAR(""))
 
static Sys_var_ulong Sys_max_error_count ("max_error_count", "Max number of errors/warnings to store for a statement", HINT_UPDATEABLE SESSION_VAR(max_error_count), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, 65535), DEFAULT(DEFAULT_ERROR_COUNT), BLOCK_SIZE(1))
 
static Sys_var_ulonglong Sys_max_heap_table_size ("max_heap_table_size", "Don't allow creation of heap tables bigger than this", HINT_UPDATEABLE SESSION_VAR(max_heap_table_size), CMD_LINE(REQUIRED_ARG), VALID_RANGE(16384,(ulonglong) ~(intptr) 0), DEFAULT(16 *1024 *1024), BLOCK_SIZE(1024))
 
static Sys_var_uint Sys_pseudo_thread_id ("pseudo_thread_id", "This variable is for internal server use", SESSION_ONLY(pseudo_thread_id), NO_CMD_LINE, VALID_RANGE(0, UINT_MAX32), DEFAULT(0), BLOCK_SIZE(1), NO_MUTEX_GUARD, IN_BINLOG, ON_CHECK(check_session_admin))
 
static Sys_var_harows Sys_max_join_size ("max_join_size", "Joins that are probably going to read more than max_join_size " "records return an error", HINT_UPDATEABLE SESSION_VAR(max_join_size), CMD_LINE(REQUIRED_ARG), VALID_RANGE(1, HA_POS_ERROR), DEFAULT(HA_POS_ERROR), BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(fix_max_join_size))
 
static Sys_var_ulong Sys_max_seeks_for_key ("max_seeks_for_key", "Limit assumed max number of seeks when looking up rows based on a key", HINT_UPDATEABLE SESSION_VAR(max_seeks_for_key), CMD_LINE(REQUIRED_ARG), VALID_RANGE(1, ULONG_MAX), DEFAULT(ULONG_MAX), BLOCK_SIZE(1))
 
static Sys_var_ulong Sys_max_length_for_sort_data ("max_length_for_sort_data", "Max number of bytes in sorted records", HINT_UPDATEABLE SESSION_VAR(max_length_for_sort_data), CMD_LINE(REQUIRED_ARG), VALID_RANGE(4, 8192 *1024L), DEFAULT(4096), BLOCK_SIZE(1))
 
static Sys_var_ulong Sys_max_points_in_geometry ("max_points_in_geometry", "Maximum number of points in a geometry", HINT_UPDATEABLE SESSION_VAR(max_points_in_geometry), CMD_LINE(OPT_ARG), VALID_RANGE(3, 1024 *1024L), DEFAULT(64 *1024), BLOCK_SIZE(1))
 
static PolyLock_mutex PLock_prepared_stmt_count & LOCK_prepared_stmt_count
 
static Sys_var_ulong Sys_max_prepared_stmt_count ("max_prepared_stmt_count", "Maximum number of prepared statements in the server", GLOBAL_VAR(max_prepared_stmt_count), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, 1024 *1024), DEFAULT(16382), BLOCK_SIZE(1), &PLock_prepared_stmt_count, NOT_IN_BINLOG, ON_CHECK(NULL), ON_UPDATE(NULL), NULL, sys_var::PARSE_EARLY)
 
static Sys_var_ulong Sys_max_relay_log_size ("max_relay_log_size", "If non-zero: relay log will be rotated automatically when the " "size exceeds this value; if zero: when the size " "exceeds max_binlog_size", GLOBAL_VAR(max_relay_log_size), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, 1024L *1024 *1024), DEFAULT(0), BLOCK_SIZE(IO_SIZE), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(fix_max_relay_log_size))
 
static Sys_var_ulong Sys_max_sort_length ("max_sort_length", "The number of bytes to use when sorting long values with PAD SPACE " "collations (only the first max_sort_length bytes of each value are " "used; the rest are ignored)", HINT_UPDATEABLE SESSION_VAR(max_sort_length), CMD_LINE(REQUIRED_ARG), VALID_RANGE(4, 8192 *1024L), DEFAULT(1024), BLOCK_SIZE(1))
 
static Sys_var_ulong Sys_max_sp_recursion_depth ("max_sp_recursion_depth", "Maximum stored procedure recursion depth", SESSION_VAR(max_sp_recursion_depth), CMD_LINE(OPT_ARG), VALID_RANGE(0, 255), DEFAULT(0), BLOCK_SIZE(1))
 
static Sys_var_max_user_conn Sys_max_user_connections ("max_user_connections", "The maximum number of active connections for a single user " "(0 = no limit)", SESSION_VAR(max_user_connections), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, UINT_MAX), DEFAULT(0), BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(session_readonly))
 
static Sys_var_ulong Sys_max_write_lock_count ("max_write_lock_count", "After this many write locks, allow some read locks to run in between", GLOBAL_VAR(max_write_lock_count), CMD_LINE(REQUIRED_ARG), VALID_RANGE(1, ULONG_MAX), DEFAULT(ULONG_MAX), BLOCK_SIZE(1))
 
static Sys_var_ulong Sys_min_examined_row_limit ("min_examined_row_limit", "Don't write queries to slow log that examine fewer rows " "than that", SESSION_VAR(min_examined_row_limit), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, ULONG_MAX), DEFAULT(0), BLOCK_SIZE(1))
 
static Sys_var_ulong Sys_net_buffer_length ("net_buffer_length", "Buffer length for TCP/IP and socket communication", SESSION_VAR(net_buffer_length), CMD_LINE(REQUIRED_ARG), VALID_RANGE(1024, 1024 *1024), DEFAULT(16384), BLOCK_SIZE(1024), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_net_buffer_length))
 
static Sys_var_ulong Sys_net_read_timeout ("net_read_timeout", "Number of seconds to wait for more data from a connection before " "aborting the read", SESSION_VAR(net_read_timeout), CMD_LINE(REQUIRED_ARG), VALID_RANGE(1, LONG_TIMEOUT), DEFAULT(NET_READ_TIMEOUT), BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(fix_net_read_timeout))
 
static Sys_var_ulong Sys_net_write_timeout ("net_write_timeout", "Number of seconds to wait for a block to be written to a connection " "before aborting the write", SESSION_VAR(net_write_timeout), CMD_LINE(REQUIRED_ARG), VALID_RANGE(1, LONG_TIMEOUT), DEFAULT(NET_WRITE_TIMEOUT), BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(fix_net_write_timeout))
 
static Sys_var_ulong Sys_net_retry_count ("net_retry_count", "If a read on a communication port is interrupted, retry this " "many times before giving up", SESSION_VAR(net_retry_count), CMD_LINE(REQUIRED_ARG), VALID_RANGE(1, ULONG_MAX), DEFAULT(MYSQLD_NET_RETRY_COUNT), BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(fix_net_retry_count))
 
static Sys_var_bool Sys_new_mode ("new", "Use very new possible \nsafe\functions", SESSION_VAR(new_mode), CMD_LINE(OPT_ARG, 'n'), DEFAULT(false))
 
static Sys_var_bool Sys_old_mode ("old", "Use compatible behavior", READ_ONLY GLOBAL_VAR(old_mode), CMD_LINE(OPT_ARG), DEFAULT(false))
 
static Sys_var_bool Sys_old_alter_table ("old_alter_table", "Use old, non-optimized alter table", SESSION_VAR(old_alter_table), CMD_LINE(OPT_ARG), DEFAULT(false))
 
static Sys_var_ulong Sys_open_files_limit ("open_files_limit", "If this is not 0, then mysqld will use this value to reserve file " "descriptors to use with setrlimit(). If this value is 0 then mysqld " "will reserve max_connections*5 or max_connections + table_open_cache*2 " "(whichever is larger) number of file descriptors", READ_ONLY GLOBAL_VAR(open_files_limit), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, OS_FILE_LIMIT), DEFAULT(0), BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(NULL), ON_UPDATE(NULL), NULL, sys_var::PARSE_EARLY)
 
static Sys_var_ulong Sys_optimizer_prune_level ("optimizer_prune_level", "Controls the heuristic(s) applied during query optimization to prune " "less-promising partial plans from the optimizer search space. " "Meaning: 0 - do not apply any heuristic, thus perform exhaustive " "search; 1 - prune plans based on number of retrieved rows", HINT_UPDATEABLE SESSION_VAR(optimizer_prune_level), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, 1), DEFAULT(1), BLOCK_SIZE(1))
 
static Sys_var_ulong Sys_optimizer_search_depth ("optimizer_search_depth", "Maximum depth of search performed by the query optimizer. Values " "larger than the number of relations in a query result in better " "query plans, but take longer to compile a query. Values smaller " "than the number of tables in a relation result in faster " "optimization, but may produce very bad query plans. If set to 0, " "the system will automatically pick a reasonable value", HINT_UPDATEABLE SESSION_VAR(optimizer_search_depth), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, MAX_TABLES+1), DEFAULT(MAX_TABLES+1), BLOCK_SIZE(1))
 
static Sys_var_ulong Sys_range_optimizer_max_mem_size ("range_optimizer_max_mem_size", "Maximum amount of memory used by the range optimizer " "to allocate predicates during range analysis. " "The larger the number, more memory may be consumed during " "range analysis. If the value is too low to completed range " "optimization of a query, index range scan will not be " "considered for this query. A value of 0 means range optimizer " "does not have any cap on memory. ", HINT_UPDATEABLE SESSION_VAR(range_optimizer_max_mem_size), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, ULONG_MAX), DEFAULT(8388608), BLOCK_SIZE(1))
 
constexpr size_t max_mem_sz = std::numeric_limits<size_t>::max()
 
static Sys_var_ulonglong Sys_histogram_generation_max_mem_size ("histogram_generation_max_mem_size", "Maximum amount of memory available for generating histograms", SESSION_VAR(histogram_generation_max_mem_size), CMD_LINE(REQUIRED_ARG), VALID_RANGE(1000000, max_mem_sz), DEFAULT(20000000), BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_session_admin), ON_UPDATE(NULL))
 
static Sys_var_ulonglong Sys_parser_max_mem_size ("parser_max_mem_size", "Maximum amount of memory available to the parser", SESSION_VAR(parser_max_mem_size), CMD_LINE(REQUIRED_ARG), VALID_RANGE(10 *1000 *1000, max_mem_sz), DEFAULT(max_mem_sz), BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(limit_parser_max_mem_size), ON_UPDATE(NULL))
 
static const char * optimizer_switch_names []
 
static Sys_var_flagset Sys_optimizer_switch ("optimizer_switch", "optimizer_switch=option=val[,option=val...], where option is one of " "{index_merge, index_merge_union, index_merge_sort_union, " "index_merge_intersection, engine_condition_pushdown, " "index_condition_pushdown, mrr, mrr_cost_based" ", materialization, semijoin, loosescan, firstmatch, duplicateweedout," " subquery_materialization_cost_based, skip_scan" ", block_nested_loop, batched_key_access, use_index_extensions," " condition_fanout_filter, derived_merge} and val is one of " "{on, off, default}", HINT_UPDATEABLE SESSION_VAR(optimizer_switch), CMD_LINE(REQUIRED_ARG), optimizer_switch_names, DEFAULT(OPTIMIZER_SWITCH_DEFAULT), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(NULL), ON_UPDATE(NULL))
 
static Sys_var_bool Sys_var_end_markers_in_json ("end_markers_in_json", "In JSON output (\XPLAIN FORMAT=JSON\and optimizer trace), " "if variable is set to 1, repeats the structure's key (if it has one) " "near the closing bracket", HINT_UPDATEABLE SESSION_VAR(end_markers_in_json), CMD_LINE(OPT_ARG), DEFAULT(false))
 
static Sys_var_flagset Sys_optimizer_trace ("optimizer_trace", "Controls tracing of the Optimizer:" " optimizer_trace=option=val[,option=val...], where option is one of" " {enabled, one_line}" " and val is one of {on, default}", SESSION_VAR(optimizer_trace), CMD_LINE(REQUIRED_ARG), Opt_trace_context::flag_names, DEFAULT(Opt_trace_context::FLAG_DEFAULT))
 
export sys_varSys_optimizer_trace_ptr = &Sys_optimizer_trace
 
static Sys_var_flagset Sys_optimizer_trace_features ("optimizer_trace_features", "Enables/disables tracing of selected features of the Optimizer:" " optimizer_trace_features=option=val[,option=val...], where option is " "one " "of" " {greedy_search, range_optimizer, dynamic_range, repeated_subselect}" " and val is one of {on, off, default}", SESSION_VAR(optimizer_trace_features), CMD_LINE(REQUIRED_ARG), Opt_trace_context::feature_names, DEFAULT(Opt_trace_context::default_features))
 Note how "misc" is not here: it is not accessible to the user; disabling "misc" would disable the top object, which would make an empty trace. More...
 
static Sys_var_long Sys_optimizer_trace_offset ("optimizer_trace_offset", "Offset of first optimizer trace to show; see manual", SESSION_VAR(optimizer_trace_offset), CMD_LINE(REQUIRED_ARG), VALID_RANGE(LONG_MIN, LONG_MAX), DEFAULT(-1), BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(NULL), ON_UPDATE(optimizer_trace_update))
 
static Sys_var_long Sys_optimizer_trace_limit ("optimizer_trace_limit", "Maximum number of shown optimizer traces", SESSION_VAR(optimizer_trace_limit), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, LONG_MAX), DEFAULT(1), BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(NULL), ON_UPDATE(optimizer_trace_update))
 
static Sys_var_ulong Sys_optimizer_trace_max_mem_size ("optimizer_trace_max_mem_size", "Maximum allowed cumulated size of stored optimizer traces", SESSION_VAR(optimizer_trace_max_mem_size), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, ULONG_MAX), DEFAULT(1024 *1024), BLOCK_SIZE(1))
 
static Sys_var_charptr Sys_pid_file ("pid_file", "Pid file used by safe_mysqld", READ_ONLY NON_PERSIST GLOBAL_VAR(pidfile_name_ptr), CMD_LINE(REQUIRED_ARG), IN_FS_CHARSET, DEFAULT(pidfile_name))
 
static Sys_var_charptr Sys_plugin_dir ("plugin_dir", "Directory for plugins", READ_ONLY NON_PERSIST GLOBAL_VAR(opt_plugin_dir_ptr), CMD_LINE(REQUIRED_ARG), IN_FS_CHARSET, DEFAULT(0))
 
static Sys_var_uint Sys_port ("port", "Port number to use for connection or 0 to default to, " "my.cnf, $MYSQL_TCP_PORT, " "/etc/services, " "built-in default (" STRINGIFY_ARG(MYSQL_PORT) "), whatever comes first", READ_ONLY NON_PERSIST GLOBAL_VAR(mysqld_port), CMD_LINE(REQUIRED_ARG, 'P'), VALID_RANGE(0, 65535), DEFAULT(0), BLOCK_SIZE(1))
 
static Sys_var_ulong Sys_preload_buff_size ("preload_buffer_size", "The size of the buffer that is allocated when preloading indexes", SESSION_VAR(preload_buff_size), CMD_LINE(REQUIRED_ARG), VALID_RANGE(1024, 1024 *1024 *1024), DEFAULT(32768), BLOCK_SIZE(1))
 
static Sys_var_uint Sys_protocol_version ("protocol_version", "The version of the client/server protocol used by the MySQL server", READ_ONLY NON_PERSIST GLOBAL_VAR(protocol_version), NO_CMD_LINE, VALID_RANGE(0, ~0), DEFAULT(PROTOCOL_VERSION), BLOCK_SIZE(1))
 
static Sys_var_proxy_user Sys_proxy_user ("proxy_user", "The proxy user account name used when logging in", IN_SYSTEM_CHARSET)
 
static Sys_var_external_user Sys_external_user ("external_user", "The external user account used when logging in", IN_SYSTEM_CHARSET)
 
static Sys_var_ulong Sys_read_buff_size ("read_buffer_size", "Each thread that does a sequential scan allocates a buffer of " "this size for each table it scans. If you do many sequential scans, " "you may want to increase this value", HINT_UPDATEABLE SESSION_VAR(read_buff_size), CMD_LINE(REQUIRED_ARG), VALID_RANGE(IO_SIZE *2, INT_MAX32), DEFAULT(128 *1024), BLOCK_SIZE(IO_SIZE))
 
static Sys_var_bool Sys_require_secure_transport ("require_secure_transport", "When this option is enabled, connections attempted using insecure " "transport will be rejected. Secure transports are SSL/TLS, " "Unix socket or Shared Memory (on Windows).", GLOBAL_VAR(opt_require_secure_transport), CMD_LINE(OPT_ARG), DEFAULT(false), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_require_secure_transport), ON_UPDATE(0))
 
static Sys_var_bool Sys_readonly ("read_only", "Make all non-temporary tables read-only, with the exception for " "replication (slave) threads and users with the SUPER privilege", GLOBAL_VAR(read_only), CMD_LINE(OPT_ARG), DEFAULT(false), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_read_only), ON_UPDATE(fix_read_only))
 The read_only boolean is always equal to the opt_readonly boolean except during fix_read_only(); when that function is entered, opt_readonly is the pre-update value and read_only is the post-update value. More...
 
static Sys_var_bool Sys_super_readonly ("super_read_only", "Make all non-temporary tables read-only, with the exception for " "replication (slave) threads. Users with the SUPER privilege are " "affected, unlike read_only. Setting super_read_only to ON " "also sets read_only to ON.", GLOBAL_VAR(super_read_only), CMD_LINE(OPT_ARG), DEFAULT(false), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(fix_super_read_only))
 
Setting super_read_only to ON triggers read_only to also be set to ON. More...
 
static Sys_var_ulong Sys_read_rnd_buff_size ("read_rnd_buffer_size", "When reading rows in sorted order after a sort, the rows are read " "through this buffer to avoid a disk seeks", HINT_UPDATEABLE SESSION_VAR(read_rnd_buff_size), CMD_LINE(REQUIRED_ARG), VALID_RANGE(1, INT_MAX32), DEFAULT(256 *1024), BLOCK_SIZE(1))
 
static Sys_var_ulong Sys_div_precincrement ("div_precision_increment", "Precision of the result of '/' " "operator will be increased on that value", HINT_UPDATEABLE SESSION_VAR(div_precincrement), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, DECIMAL_MAX_SCALE), DEFAULT(4), BLOCK_SIZE(1))
 
static Sys_var_uint Sys_eq_range_index_dive_limit ("eq_range_index_dive_limit", "The optimizer will use existing index statistics instead of " "doing index dives for equality ranges if the number of equality " "ranges for the index is larger than or equal to this number. " "If set to 0, index dives are always used.", HINT_UPDATEABLE SESSION_VAR(eq_range_index_dive_limit), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, UINT_MAX32), DEFAULT(200), BLOCK_SIZE(1))
 
static Sys_var_ulong Sys_range_alloc_block_size ("range_alloc_block_size", "Allocation block size for storing ranges during optimization", HINT_UPDATEABLE SESSION_VAR(range_alloc_block_size), CMD_LINE(REQUIRED_ARG), VALID_RANGE(RANGE_ALLOC_BLOCK_SIZE, UINT32_MAX), DEFAULT(RANGE_ALLOC_BLOCK_SIZE), BLOCK_SIZE(1024))
 
static Sys_var_ulong Sys_query_alloc_block_size ("query_alloc_block_size", "Allocation block size for query parsing and execution", SESSION_VAR(query_alloc_block_size), CMD_LINE(REQUIRED_ARG), VALID_RANGE(1024, UINT_MAX32), DEFAULT(QUERY_ALLOC_BLOCK_SIZE), BLOCK_SIZE(1024), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(fix_thd_mem_root))
 
static Sys_var_ulong Sys_query_prealloc_size ("query_prealloc_size", "Persistent buffer for query parsing and execution", SESSION_VAR(query_prealloc_size), CMD_LINE(REQUIRED_ARG), VALID_RANGE(QUERY_ALLOC_PREALLOC_SIZE, ULONG_MAX), DEFAULT(QUERY_ALLOC_PREALLOC_SIZE), BLOCK_SIZE(1024), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(fix_thd_mem_root))
 
static Sys_var_bool Sys_skip_external_locking ("skip_external_locking", "Don't use system (external) locking", READ_ONLY NON_PERSIST GLOBAL_VAR(my_disable_locking), NO_CMD_LINE, DEFAULT(true))
 
static Sys_var_bool Sys_skip_networking ("skip_networking", "Don't allow connection with TCP/IP", READ_ONLY NON_PERSIST GLOBAL_VAR(opt_disable_networking), CMD_LINE(OPT_ARG), DEFAULT(false))
 
static Sys_var_bool Sys_skip_name_resolve ("skip_name_resolve", "Don't resolve hostnames. All hostnames are IP's or 'localhost'.", READ_ONLY GLOBAL_VAR(opt_skip_name_resolve), CMD_LINE(OPT_ARG, OPT_SKIP_RESOLVE), DEFAULT(false))
 
static Sys_var_bool Sys_skip_show_database ("skip_show_database", "Don't allow 'SHOW DATABASE' commands", READ_ONLY GLOBAL_VAR(opt_skip_show_db), CMD_LINE(OPT_ARG), DEFAULT(false))
 
static Sys_var_charptr Sys_socket ("socket", "Socket file to use for connection", READ_ONLY NON_PERSIST GLOBAL_VAR(mysqld_unix_port), CMD_LINE(REQUIRED_ARG), IN_FS_CHARSET, DEFAULT(0))
 
static Sys_var_ulong Sys_thread_stack ("thread_stack", "The stack size for each thread", READ_ONLY GLOBAL_VAR(my_thread_stack_size), CMD_LINE(REQUIRED_ARG), VALID_RANGE(128 *1024, ULONG_MAX), DEFAULT(DEFAULT_THREAD_STACK), BLOCK_SIZE(1024))
 
static Sys_var_charptr Sys_tmpdir ("tmpdir", "Path for temporary files. Several paths may " "be specified, separated by a " "colon (:)" ", in this case they are used in a round-robin fashion", READ_ONLY NON_PERSIST GLOBAL_VAR(opt_mysql_tmpdir), CMD_LINE(REQUIRED_ARG, 't'), IN_FS_CHARSET, DEFAULT(0))
 
static Sys_var_ulong Sys_trans_alloc_block_size ("transaction_alloc_block_size", "Allocation block size for transactions to be stored in binary log", SESSION_VAR(trans_alloc_block_size), CMD_LINE(REQUIRED_ARG), VALID_RANGE(1024, 128 *1024), DEFAULT(QUERY_ALLOC_BLOCK_SIZE), BLOCK_SIZE(1024), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(fix_trans_mem_root))
 
static Sys_var_ulong Sys_trans_prealloc_size ("transaction_prealloc_size", "Persistent buffer for transactions to be stored in binary log", SESSION_VAR(trans_prealloc_size), CMD_LINE(REQUIRED_ARG), VALID_RANGE(1024, 128 *1024), DEFAULT(TRANS_ALLOC_PREALLOC_SIZE), BLOCK_SIZE(1024), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(fix_trans_mem_root))
 
static const char * thread_handling_names []
 
static Sys_var_enum Sys_thread_handling ("thread_handling", "Define threads usage for handling queries, one of " "one-thread-per-connection, no-threads, loaded-dynamically", READ_ONLY GLOBAL_VAR(Connection_handler_manager::thread_handling), CMD_LINE(REQUIRED_ARG), thread_handling_names, DEFAULT(0))
 
static Sys_var_charptr Sys_secure_file_priv ("secure_file_priv", "Limit LOAD DATA, SELECT ... OUTFILE, and LOAD_FILE() to files " "within specified directory", READ_ONLY NON_PERSIST GLOBAL_VAR(opt_secure_file_priv), CMD_LINE(REQUIRED_ARG), IN_FS_CHARSET, DEFAULT(DEFAULT_SECURE_FILE_PRIV_DIR))
 
static Sys_var_ulong Sys_server_id ("server_id", "Uniquely identifies the server instance in the community of " "replication partners", GLOBAL_VAR(server_id), CMD_LINE(REQUIRED_ARG, OPT_SERVER_ID), VALID_RANGE(0, UINT_MAX32), DEFAULT(1), BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(fix_server_id))
 
static Sys_var_charptr Sys_server_uuid ("server_uuid", "Uniquely identifies the server instance in the universe", READ_ONLY NON_PERSIST GLOBAL_VAR(server_uuid_ptr), NO_CMD_LINE, IN_FS_CHARSET, DEFAULT(server_uuid))
 
static Sys_var_uint Sys_server_id_bits ("server_id_bits", "Set number of significant bits in server-id", GLOBAL_VAR(opt_server_id_bits), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, 32), DEFAULT(32), BLOCK_SIZE(1))
 
static Sys_var_int32 Sys_regexp_time_limit ("regexp_time_limit", "Timeout for regular expressions matches, in steps of the match " "engine, typically on the order of milliseconds.", GLOBAL_VAR(opt_regexp_time_limit), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, INT32_MAX), DEFAULT(32), BLOCK_SIZE(1))
 
static Sys_var_int32 Sys_regexp_stack_limit ("regexp_stack_limit", "Stack size limit for regular expressions matches", GLOBAL_VAR(opt_regexp_stack_limit), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, INT32_MAX), DEFAULT(8000000), BLOCK_SIZE(1))
 
static Sys_var_bool Sys_slave_compressed_protocol ("slave_compressed_protocol", "Use compression on master/slave protocol", GLOBAL_VAR(opt_slave_compressed_protocol), CMD_LINE(OPT_ARG), DEFAULT(false))
 
static const char * slave_exec_mode_names [] = {"STRICT", "IDEMPOTENT", 0}
 
static Sys_var_enum Slave_exec_mode ("slave_exec_mode", "Modes for how replication events should be executed. Legal values " "are STRICT (default) and IDEMPOTENT. In IDEMPOTENT mode, " "replication will not stop for operations that are idempotent. " "In STRICT mode, replication will stop on any unexpected difference " "between the master and the slave", GLOBAL_VAR(slave_exec_mode_options), CMD_LINE(REQUIRED_ARG), slave_exec_mode_names, DEFAULT(RBR_EXEC_MODE_STRICT))
 
const char * slave_type_conversions_name []
 
static Sys_var_set Slave_type_conversions ("slave_type_conversions", "Set of slave type conversions that are enabled. Legal values are:" " ALL_LOSSY to enable lossy conversions," " ALL_NON_LOSSY to enable non-lossy conversions," " ALL_UNSIGNED to treat all integer column type data to be unsigned " "values, and" " ALL_SIGNED to treat all integer column type data to be signed values." " Default treatment is ALL_SIGNED. If ALL_SIGNED and ALL_UNSIGNED both " "are" " specified, ALL_SIGNED will take higher priority than ALL_UNSIGNED." " If the variable is assigned the empty set, no conversions are" " allowed and it is expected that the types match exactly.", GLOBAL_VAR(slave_type_conversions_options), CMD_LINE(REQUIRED_ARG), slave_type_conversions_name, DEFAULT(0))
 
static Sys_var_bool Sys_slave_sql_verify_checksum ("slave_sql_verify_checksum", "Force checksum verification of replication events after reading them " "from relay log. Note: Events are always checksum-verified by slave on " "receiving them from the network before writing them to the relay " "log. Enabled by default.", GLOBAL_VAR(opt_slave_sql_verify_checksum), CMD_LINE(OPT_ARG), DEFAULT(true))
 
static const char * slave_rows_search_algorithms_names []
 
static Sys_var_set Slave_rows_search_algorithms ("slave_rows_search_algorithms", "Set of searching algorithms that the slave will use while " "searching for records from the storage engine to either " "updated or deleted them. Possible values are: INDEX_SCAN, " "TABLE_SCAN and HASH_SCAN. Any combination is allowed, and " "the slave will always pick the most suitable algorithm for " "any given scenario. " "(Default: INDEX_SCAN, HASH_SCAN).", GLOBAL_VAR(slave_rows_search_algorithms_options), CMD_LINE(REQUIRED_ARG), slave_rows_search_algorithms_names, DEFAULT(SLAVE_ROWS_INDEX_SCAN|SLAVE_ROWS_HASH_SCAN), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_not_null_not_empty), ON_UPDATE(NULL))
 
static const char * mts_parallel_type_names [] = {"DATABASE", "LOGICAL_CLOCK", 0}
 
static Sys_var_enum Mts_parallel_type ("slave_parallel_type", "Specifies if the slave will use database partitioning " "or information from master to parallelize transactions." "(Default: DATABASE).", PERSIST_AS_READONLY GLOBAL_VAR(mts_parallel_option), CMD_LINE(REQUIRED_ARG), mts_parallel_type_names, DEFAULT(MTS_PARALLEL_TYPE_DB_NAME), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_slave_stopped), ON_UPDATE(NULL))
 
static PolyLock_mutex PLock_slave_trans_dep_trackerLOCK_slave_trans_dep_tracker
 
static const char * opt_binlog_transaction_dependency_tracking_names []
 
static Sys_var_enum Binlog_transaction_dependency_tracking ("binlog_transaction_dependency_tracking", "Selects the source of dependency information from which to " "assess which transactions can be executed in parallel by the " "slave's multi-threaded applier. " "Possible values are COMMIT_ORDER, WRITESET and WRITESET_SESSION.", GLOBAL_VAR(mysql_bin_log.m_dependency_tracker.m_opt_tracking_mode), CMD_LINE(REQUIRED_ARG), opt_binlog_transaction_dependency_tracking_names, DEFAULT(DEPENDENCY_TRACKING_COMMIT_ORDER), &PLock_slave_trans_dep_tracker, NOT_IN_BINLOG, ON_CHECK(check_binlog_transaction_dependency_tracking), ON_UPDATE(update_binlog_transaction_dependency_tracking))
 
static Sys_var_ulong Binlog_transaction_dependency_history_size ("binlog_transaction_dependency_history_size", "Maximum number of rows to keep in the writeset history.", ->m_opt_max_history_size)
 
static Sys_var_ulong CMD_LINE (REQUIRED_ARG, 0)
 
static Sys_var_ulong VALID_RANGE (1, 1000000)
 
static Sys_var_ulong DEFAULT (25000)
 
static Sys_var_ulong BLOCK_SIZE (1)
 
static Sys_var_ulongPLock_slave_trans_dep_tracker
 
static Sys_var_ulong NOT_IN_BINLOG
 
static Sys_var_ulong ON_CHECK (NULL)
 
static Sys_var_ulong ON_UPDATE (NULL))
 
static Sys_var_bool Sys_slave_preserve_commit_order ("slave_preserve_commit_order", "Force slave workers to make commits in the same order as on the master. " "Disabled by default.", PERSIST_AS_READONLY GLOBAL_VAR(opt_slave_preserve_commit_order), CMD_LINE(OPT_ARG, OPT_SLAVE_PRESERVE_COMMIT_ORDER), DEFAULT(false), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_slave_stopped), ON_UPDATE(NULL))
 
static Sys_var_enum_binlog_checksum Binlog_checksum_enum ("binlog_checksum", "Type of BINLOG_CHECKSUM_ALG. Include checksum for " "log events in the binary log. Possible values are NONE and CRC32; " "default is CRC32.", GLOBAL_VAR(binlog_checksum_options), CMD_LINE(REQUIRED_ARG), binlog_checksum_type_names, DEFAULT(binary_log::BINLOG_CHECKSUM_ALG_CRC32), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_outside_trx))
 
static Sys_var_bool Sys_master_verify_checksum ("master_verify_checksum", "Force checksum verification of logged events in binary log before " "sending them to slaves or printing them in output of SHOW BINLOG " "EVENTS. " "Disabled by default.", GLOBAL_VAR(opt_master_verify_checksum), CMD_LINE(OPT_ARG), DEFAULT(false))
 
static Sys_var_ulong Sys_slow_launch_time ("slow_launch_time", "If creating the thread takes longer than this value (in seconds), " "the Slow_launch_threads counter will be incremented", GLOBAL_VAR(slow_launch_time), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, LONG_TIMEOUT), DEFAULT(2), BLOCK_SIZE(1))
 
static Sys_var_ulong Sys_sort_buffer ("sort_buffer_size", "Each thread that needs to do a sort allocates a buffer of this size", HINT_UPDATEABLE SESSION_VAR(sortbuff_size), CMD_LINE(REQUIRED_ARG), VALID_RANGE(MIN_SORT_MEMORY, ULONG_MAX), DEFAULT(DEFAULT_SORT_MEMORY), BLOCK_SIZE(1))
 
static const char * sql_mode_names []
 
static Sys_var_set Sys_sql_mode ("sql_mode", "Syntax: sql-mode=mode[,mode[,mode...]]. See the manual for the " "complete list of valid sql modes", HINT_UPDATEABLE SESSION_VAR(sql_mode), CMD_LINE(REQUIRED_ARG), sql_mode_names, DEFAULT(MODE_NO_ENGINE_SUBSTITUTION|MODE_ONLY_FULL_GROUP_BY|MODE_STRICT_TRANS_TABLES|MODE_NO_ZERO_IN_DATE|MODE_NO_ZERO_DATE|MODE_ERROR_FOR_DIVISION_BY_ZERO), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_sql_mode), ON_UPDATE(fix_sql_mode))
 
static Sys_var_ulong Sys_max_execution_time ("max_execution_time", "Kill SELECT statement that takes over the specified number of " "milliseconds", HINT_UPDATEABLE SESSION_VAR(max_execution_time), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, ULONG_MAX), DEFAULT(0), BLOCK_SIZE(1))
 
static const char * ssl_fips_mode_names [] = {"OFF", "ON", "STRICT", 0}
 
static Sys_var_enum Sys_ssl_fips_mode ("ssl_fips_mode", "SSL FIPS mode (applies only for OpenSSL); " "permitted values are: OFF, ON, STRICT", GLOBAL_VAR(opt_ssl_fips_mode), CMD_LINE(REQUIRED_ARG, OPT_SSL_FIPS_MODE), ssl_fips_mode_names, DEFAULT(0), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(NULL), ON_UPDATE(update_fips_mode), NULL)
 
static const char * updatable_views_with_limit_names [] = {"NO", "YES", 0}
 
static Sys_var_enum Sys_updatable_views_with_limit ("updatable_views_with_limit", "YES = Don't issue an error message (warning only) if a VIEW without " "presence of a key of the underlying table is used in queries with a " "LIMIT clause for updating. NO = Prohibit update of a VIEW, which " "does not contain a key of the underlying table and the query uses " "a LIMIT clause (usually get from GUI tools)", HINT_UPDATEABLE SESSION_VAR(updatable_views_with_limit), CMD_LINE(REQUIRED_ARG), updatable_views_with_limit_names, DEFAULT(true))
 
static char * system_time_zone_ptr
 
static Sys_var_charptr Sys_system_time_zone ("system_time_zone", "The server system time zone", READ_ONLY NON_PERSIST GLOBAL_VAR(system_time_zone_ptr), NO_CMD_LINE, IN_FS_CHARSET, DEFAULT(system_time_zone))
 
static Sys_var_ulong Sys_table_def_size ("table_definition_cache", "The number of cached table definitions", GLOBAL_VAR(table_def_size), CMD_LINE(REQUIRED_ARG, OPT_TABLE_DEFINITION_CACHE), VALID_RANGE(TABLE_DEF_CACHE_MIN, 512 *1024), DEFAULT(TABLE_DEF_CACHE_DEFAULT), BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(NULL), ON_UPDATE(NULL), NULL, sys_var::PARSE_EARLY)
 
static Sys_var_ulong Sys_schema_def_size ("schema_definition_cache", "The number of cached schema definitions", GLOBAL_VAR(schema_def_size), CMD_LINE(REQUIRED_ARG), VALID_RANGE(SCHEMA_DEF_CACHE_MIN, 512 *1024), DEFAULT(SCHEMA_DEF_CACHE_DEFAULT), BLOCK_SIZE(1))
 
static Sys_var_ulong Sys_tablespace_def_size ("tablespace_definition_cache", "The number of cached tablespace definitions", GLOBAL_VAR(tablespace_def_size), CMD_LINE(REQUIRED_ARG), VALID_RANGE(TABLESPACE_DEF_CACHE_MIN, 512 *1024), DEFAULT(TABLESPACE_DEF_CACHE_DEFAULT), BLOCK_SIZE(1))
 
static Sys_var_ulong Sys_stored_program_def_size ("stored_program_definition_cache", "The number of cached stored program definitions", GLOBAL_VAR(stored_program_def_size), CMD_LINE(REQUIRED_ARG), VALID_RANGE(STORED_PROGRAM_DEF_CACHE_MIN, 512 *1024), DEFAULT(STORED_PROGRAM_DEF_CACHE_DEFAULT), BLOCK_SIZE(1))
 
static Sys_var_ulong Sys_table_cache_size ("table_open_cache", "The number of cached open tables " "(total for all table cache instances)", GLOBAL_VAR(table_cache_size), CMD_LINE(REQUIRED_ARG), VALID_RANGE(1, 512 *1024), DEFAULT(TABLE_OPEN_CACHE_DEFAULT), BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(NULL), ON_UPDATE(fix_table_cache_size), NULL, sys_var::PARSE_EARLY)
 
static Sys_var_ulong Sys_table_cache_instances ("table_open_cache_instances", "The number of table cache instances", READ_ONLY GLOBAL_VAR(table_cache_instances), CMD_LINE(REQUIRED_ARG), VALID_RANGE(1, Table_cache_manager::MAX_TABLE_CACHES), DEFAULT(Table_cache_manager::DEFAULT_MAX_TABLE_CACHES), BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(NULL), ON_UPDATE(NULL), NULL, sys_var::PARSE_EARLY)
 
static Sys_var_ulong Sys_thread_cache_size ("thread_cache_size", "How many threads we should keep in a cache for reuse", GLOBAL_VAR(Per_thread_connection_handler::max_blocked_pthreads), CMD_LINE(REQUIRED_ARG, OPT_THREAD_CACHE_SIZE), VALID_RANGE(0, 16384), DEFAULT(0), BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG, nullptr, ON_UPDATE(modify_thread_cache_size))
 
static Sys_var_transaction_isolation Sys_transaction_isolation ("transaction_isolation", "Default transaction isolation level", UNTRACKED_DEFAULT SESSION_VAR(transaction_isolation), NO_CMD_LINE, tx_isolation_names, DEFAULT(ISO_REPEATABLE_READ), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_transaction_isolation))
 
static Sys_var_transaction_read_only Sys_transaction_read_only ("transaction_read_only", "Set default transaction access mode to read only.", UNTRACKED_DEFAULT SESSION_VAR(transaction_read_only), NO_CMD_LINE, DEFAULT(0), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_transaction_read_only))
 
static Sys_var_ulonglong Sys_tmp_table_size ("tmp_table_size", "If an internal in-memory temporary table in the MEMORY storage engine " "exceeds this size, MySQL will automatically convert it to an on-disk " "table", HINT_UPDATEABLE SESSION_VAR(tmp_table_size), CMD_LINE(REQUIRED_ARG), VALID_RANGE(1024,(ulonglong) ~(intptr) 0), DEFAULT(16 *1024 *1024), BLOCK_SIZE(1))
 
static char * server_version_ptr
 
static Sys_var_version Sys_version ("version", "Server version", READ_ONLY NON_PERSIST GLOBAL_VAR(server_version_ptr), NO_CMD_LINE, IN_SYSTEM_CHARSET, DEFAULT(server_version))
 
static char * server_version_comment_ptr
 
static Sys_var_charptr Sys_version_comment ("version_comment", "version_comment", READ_ONLY NON_PERSIST GLOBAL_VAR(server_version_comment_ptr), NO_CMD_LINE, IN_SYSTEM_CHARSET, DEFAULT(MYSQL_COMPILATION_COMMENT_SERVER))
 
static char * server_version_compile_machine_ptr
 
static Sys_var_charptr Sys_version_compile_machine ("version_compile_machine", "version_compile_machine", READ_ONLY NON_PERSIST GLOBAL_VAR(server_version_compile_machine_ptr), NO_CMD_LINE, IN_SYSTEM_CHARSET, DEFAULT(MACHINE_TYPE))
 
static char * server_version_compile_os_ptr
 
static Sys_var_charptr Sys_version_compile_os ("version_compile_os", "version_compile_os", READ_ONLY NON_PERSIST GLOBAL_VAR(server_version_compile_os_ptr), NO_CMD_LINE, IN_SYSTEM_CHARSET, DEFAULT(SYSTEM_TYPE))
 
static const char * server_version_compile_zlib_ptr = ZLIB_VERSION
 
static Sys_var_charptr Sys_version_compile_zlib ("version_compile_zlib", "version_compile_zlib", READ_ONLY NON_PERSIST GLOBAL_VAR(server_version_compile_zlib_ptr), NO_CMD_LINE, IN_SYSTEM_CHARSET, DEFAULT(ZLIB_VERSION))
 
static Sys_var_ulong Sys_net_wait_timeout ("wait_timeout", "The number of seconds the server waits for activity on a " "connection before closing it", SESSION_VAR(net_wait_timeout), CMD_LINE(REQUIRED_ARG), VALID_RANGE(1, IF_WIN(INT_MAX32/1000, LONG_TIMEOUT)), DEFAULT(NET_WAIT_TIMEOUT), BLOCK_SIZE(1))
 
static Sys_var_plugin Sys_default_storage_engine ("default_storage_engine", "The default storage engine for new tables", SESSION_VAR(table_plugin), NO_CMD_LINE, MYSQL_STORAGE_ENGINE_PLUGIN, DEFAULT(&default_storage_engine), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_storage_engine))
 
const char * internal_tmp_mem_storage_engine_names []
 
static Sys_var_enum Sys_internal_tmp_mem_storage_engine ("internal_tmp_mem_storage_engine", "The default storage engine for in-memory internal temporary tables.", HINT_UPDATEABLE SESSION_VAR(internal_tmp_mem_storage_engine), CMD_LINE(REQUIRED_ARG), internal_tmp_mem_storage_engine_names, DEFAULT(TMP_TABLE_TEMPTABLE))
 
static Sys_var_ulonglong Sys_temptable_max_ram ("temptable_max_ram", "Maximum amount of memory (in bytes) the TempTable storage engine is " "allowed to allocate from the main memory (RAM) before starting to " "store data on disk.", GLOBAL_VAR(temptable_max_ram), CMD_LINE(REQUIRED_ARG), VALID_RANGE(2<< 20, ULLONG_MAX), DEFAULT(1<< 30), BLOCK_SIZE(1))
 
static Sys_var_bool Sys_temptable_use_mmap ("temptable_use_mmap", "Use mmap files for temptables", GLOBAL_VAR(temptable_use_mmap), CMD_LINE(OPT_ARG), DEFAULT(true))
 
static Sys_var_plugin Sys_default_tmp_storage_engine ("default_tmp_storage_engine", "The default storage engine for new explicit temporary tables", HINT_UPDATEABLE SESSION_VAR(temp_table_plugin), NO_CMD_LINE, MYSQL_STORAGE_ENGINE_PLUGIN, DEFAULT(&default_tmp_storage_engine), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_storage_engine))
 
static Sys_var_bit Sys_autocommit ("autocommit", "autocommit", SESSION_VAR(option_bits), NO_CMD_LINE, OPTION_AUTOCOMMIT, DEFAULT(true), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(fix_autocommit))
 
export sys_varSys_autocommit_ptr = &Sys_autocommit
 
static Sys_var_bool Sys_big_tables ("big_tables", "Allow big result sets by saving all " "temporary sets on file (Solves most 'table full' errors)", HINT_UPDATEABLE SESSION_VAR(big_tables), CMD_LINE(OPT_ARG), DEFAULT(false))
 
static Sys_var_bit Sys_big_selects ("sql_big_selects", "sql_big_selects", HINT_UPDATEABLE SESSION_VAR(option_bits), NO_CMD_LINE, OPTION_BIG_SELECTS, DEFAULT(false))
 
static Sys_var_bit Sys_log_off ("sql_log_off", "sql_log_off", SESSION_VAR(option_bits), NO_CMD_LINE, OPTION_LOG_OFF, DEFAULT(false), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_session_admin))
 
static Sys_var_bool Sys_log_binlog ("sql_log_bin", "Controls whether logging to the binary log is done", SESSION_ONLY(sql_log_bin), NO_CMD_LINE, DEFAULT(true), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_sql_log_bin), ON_UPDATE(fix_sql_log_bin_after_update))
 
static Sys_var_bit Sys_transaction_allow_batching ("transaction_allow_batching", "transaction_allow_batching", SESSION_ONLY(option_bits), NO_CMD_LINE, OPTION_ALLOW_BATCH, DEFAULT(false))
 
static Sys_var_bit Sys_sql_warnings ("sql_warnings", "sql_warnings", SESSION_VAR(option_bits), NO_CMD_LINE, OPTION_WARNINGS, DEFAULT(false))
 
static Sys_var_bit Sys_sql_notes ("sql_notes", "sql_notes", SESSION_VAR(option_bits), NO_CMD_LINE, OPTION_SQL_NOTES, DEFAULT(true))
 
static Sys_var_bit Sys_auto_is_null ("sql_auto_is_null", "sql_auto_is_null", HINT_UPDATEABLE SESSION_VAR(option_bits), NO_CMD_LINE, OPTION_AUTO_IS_NULL, DEFAULT(false), NO_MUTEX_GUARD, IN_BINLOG)
 
static Sys_var_bit Sys_safe_updates ("sql_safe_updates", "sql_safe_updates", HINT_UPDATEABLE SESSION_VAR(option_bits), NO_CMD_LINE, OPTION_SAFE_UPDATES, DEFAULT(false))
 
static Sys_var_bit Sys_buffer_results ("sql_buffer_result", "sql_buffer_result", HINT_UPDATEABLE SESSION_VAR(option_bits), NO_CMD_LINE, OPTION_BUFFER_RESULT, DEFAULT(false))
 
static Sys_var_bit Sys_quote_show_create ("sql_quote_show_create", "sql_quote_show_create", SESSION_VAR(option_bits), NO_CMD_LINE, OPTION_QUOTE_SHOW_CREATE, DEFAULT(true))
 
static Sys_var_bit Sys_foreign_key_checks ("foreign_key_checks", "foreign_key_checks", HINT_UPDATEABLE SESSION_VAR(option_bits), NO_CMD_LINE, REVERSE(OPTION_NO_FOREIGN_KEY_CHECKS), DEFAULT(true), NO_MUTEX_GUARD, IN_BINLOG)
 
static Sys_var_bit Sys_unique_checks ("unique_checks", "unique_checks", HINT_UPDATEABLE SESSION_VAR(option_bits), NO_CMD_LINE, REVERSE(OPTION_RELAXED_UNIQUE_CHECKS), DEFAULT(true), NO_MUTEX_GUARD, IN_BINLOG)
 
static Sys_var_harows Sys_select_limit ("sql_select_limit", "The maximum number of rows to return from SELECT statements", HINT_UPDATEABLE SESSION_VAR(select_limit), NO_CMD_LINE, VALID_RANGE(0, HA_POS_ERROR), DEFAULT(HA_POS_ERROR), BLOCK_SIZE(1))
 
static Sys_var_session_special_double Sys_timestamp ("timestamp", "Set the time for this client", HINT_UPDATEABLE sys_var::ONLY_SESSION, NO_CMD_LINE, VALID_RANGE(0, 0), BLOCK_SIZE(1), NO_MUTEX_GUARD, IN_BINLOG, ON_CHECK(check_timestamp), ON_UPDATE(update_timestamp), ON_READ(read_timestamp))
 
static Sys_var_session_special Sys_last_insert_id ("last_insert_id", "The value to be returned from LAST_INSERT_ID()", sys_var::ONLY_SESSION, NO_CMD_LINE, VALID_RANGE(0, ULLONG_MAX), BLOCK_SIZE(1), NO_MUTEX_GUARD, IN_BINLOG, ON_CHECK(0), ON_UPDATE(update_last_insert_id), ON_READ(read_last_insert_id))
 
static Sys_var_session_special Sys_identity ("identity", "Synonym for the last_insert_id variable", sys_var::ONLY_SESSION, NO_CMD_LINE, VALID_RANGE(0, ULLONG_MAX), BLOCK_SIZE(1), NO_MUTEX_GUARD, IN_BINLOG, ON_CHECK(0), ON_UPDATE(update_last_insert_id), ON_READ(read_last_insert_id))
 
static Sys_var_session_special Sys_insert_id ("insert_id", "The value to be used by the following INSERT " "or ALTER TABLE statement when inserting an AUTO_INCREMENT value", HINT_UPDATEABLE sys_var::ONLY_SESSION, NO_CMD_LINE, VALID_RANGE(0, ULLONG_MAX), BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(update_insert_id), ON_READ(read_insert_id))
 
static Sys_var_session_special Sys_rand_seed1 ("rand_seed1", "Sets the internal state of the RAND() " "generator for replication purposes", sys_var::ONLY_SESSION, NO_CMD_LINE, VALID_RANGE(0, ULONG_MAX), BLOCK_SIZE(1), NO_MUTEX_GUARD, IN_BINLOG, ON_CHECK(0), ON_UPDATE(update_rand_seed1), ON_READ(read_rand_seed))
 
static Sys_var_session_special Sys_rand_seed2 ("rand_seed2", "Sets the internal state of the RAND() " "generator for replication purposes", sys_var::ONLY_SESSION, NO_CMD_LINE, VALID_RANGE(0, ULONG_MAX), BLOCK_SIZE(1), NO_MUTEX_GUARD, IN_BINLOG, ON_CHECK(0), ON_UPDATE(update_rand_seed2), ON_READ(read_rand_seed))
 
static Sys_var_session_special Sys_error_count ("error_count", "The number of errors that resulted from the " "last statement that generated messages", READ_ONLY sys_var::ONLY_SESSION, NO_CMD_LINE, VALID_RANGE(0, ULLONG_MAX), BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(0), ON_READ(read_error_count))
 
static Sys_var_session_special Sys_warning_count ("warning_count", "The number of errors, warnings, and notes " "that resulted from the last statement that generated messages", READ_ONLY sys_var::ONLY_SESSION, NO_CMD_LINE, VALID_RANGE(0, ULLONG_MAX), BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(0), ON_READ(read_warning_count))
 
static Sys_var_ulong Sys_default_week_format ("default_week_format", "The default week format used by WEEK() functions", SESSION_VAR(default_week_format), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, 7), DEFAULT(0), BLOCK_SIZE(1))
 
static Sys_var_ulong Sys_group_concat_max_len ("group_concat_max_len", "The maximum length of the result of function GROUP_CONCAT()", HINT_UPDATEABLE SESSION_VAR(group_concat_max_len), CMD_LINE(REQUIRED_ARG), VALID_RANGE(4, ULONG_MAX), DEFAULT(1024), BLOCK_SIZE(1))
 
static char * glob_hostname_ptr
 
static Sys_var_charptr Sys_hostname ("hostname", "Server host name", READ_ONLY NON_PERSIST GLOBAL_VAR(glob_hostname_ptr), NO_CMD_LINE, IN_FS_CHARSET, DEFAULT(glob_hostname))
 
static Sys_var_charptr Sys_repl_report_host ("report_host", "Hostname or IP of the slave to be reported to the master during " "slave registration. Will appear in the output of SHOW SLAVE HOSTS. " "Leave unset if you do not want the slave to register itself with the " "master. Note that it is not sufficient for the master to simply read " "the IP of the slave off the socket once the slave connects. Due to " "NAT and other routing issues, that IP may not be valid for connecting " "to the slave from the master or other hosts", READ_ONLY GLOBAL_VAR(report_host), CMD_LINE(REQUIRED_ARG), IN_FS_CHARSET, DEFAULT(0))
 
static Sys_var_charptr Sys_repl_report_user ("report_user", "The account user name of the slave to be reported to the master " "during slave registration", READ_ONLY GLOBAL_VAR(report_user), CMD_LINE(REQUIRED_ARG), IN_FS_CHARSET, DEFAULT(0))
 
static Sys_var_charptr Sys_repl_report_password ("report_password", "The account password of the slave to be reported to the master " "during slave registration", READ_ONLY GLOBAL_VAR(report_password), CMD_LINE(REQUIRED_ARG), IN_FS_CHARSET, DEFAULT(0))
 
static Sys_var_uint Sys_repl_report_port ("report_port", "Port for connecting to slave reported to the master during slave " "registration. Set it only if the slave is listening on a non-default " "port or if you have a special tunnel from the master or other clients " "to the slave. If not sure, leave this option unset", READ_ONLY GLOBAL_VAR(report_port), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, 65535), DEFAULT(0), BLOCK_SIZE(1))
 
static Sys_var_bool Sys_keep_files_on_create ("keep_files_on_create", "Don't overwrite stale .MYD and .MYI even if no directory is specified", SESSION_VAR(keep_files_on_create), CMD_LINE(OPT_ARG), DEFAULT(false))
 
static char * license
 
static Sys_var_charptr Sys_license ("license", "The type of license the server has", READ_ONLY NON_PERSIST GLOBAL_VAR(license), NO_CMD_LINE, IN_SYSTEM_CHARSET, DEFAULT(STRINGIFY_ARG(LICENSE)))
 
static Sys_var_charptr Sys_general_log_path ("general_log_file", "Log connections and queries to given file", GLOBAL_VAR(opt_general_logname), CMD_LINE(REQUIRED_ARG), IN_FS_CHARSET, DEFAULT(0), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_log_path), ON_UPDATE(fix_general_log_file))
 
static Sys_var_charptr Sys_slow_log_path ("slow_query_log_file", "Log slow queries to given log file. " "Defaults logging to hostname-slow.log. Must be enabled to activate " "other slow log options", GLOBAL_VAR(opt_slow_logname), CMD_LINE(REQUIRED_ARG), IN_FS_CHARSET, DEFAULT(0), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_log_path), ON_UPDATE(fix_slow_log_file))
 
static Sys_var_have Sys_have_compress ("have_compress", "have_compress", READ_ONLY NON_PERSIST GLOBAL_VAR(have_compress), NO_CMD_LINE)
 
static Sys_var_have Sys_have_dlopen ("have_dynamic_loading", "have_dynamic_loading", READ_ONLY NON_PERSIST GLOBAL_VAR(have_dlopen), NO_CMD_LINE)
 
static Sys_var_have Sys_have_geometry ("have_geometry", "have_geometry", READ_ONLY NON_PERSIST GLOBAL_VAR(have_geometry), NO_CMD_LINE)
 
enum SHOW_COMP_OPTION Sys_var_have_func
 
static Sys_var_have_func Sys_have_openssl ("have_openssl", "have_openssl", have_ssl_func)
 
static Sys_var_have Sys_have_profiling ("have_profiling", "have_profiling", READ_ONLY NON_PERSIST GLOBAL_VAR(have_profiling), NO_CMD_LINE, NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(0), DEPRECATED_VAR(""))
 
static Sys_var_have Sys_have_query_cache ("have_query_cache", "have_query_cache. " "This variable is deprecated and will be removed in a future release.", READ_ONLY NON_PERSIST GLOBAL_VAR(have_query_cache), NO_CMD_LINE, NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(nullptr), ON_UPDATE(nullptr), DEPRECATED_VAR(""))
 
static Sys_var_have Sys_have_rtree_keys ("have_rtree_keys", "have_rtree_keys", READ_ONLY NON_PERSIST GLOBAL_VAR(have_rtree_keys), NO_CMD_LINE)
 
static Sys_var_have_func Sys_have_ssl ("have_ssl", "have_ssl", have_ssl_func)
 
static Sys_var_have Sys_have_symlink ("have_symlink", "have_symlink", READ_ONLY NON_PERSIST GLOBAL_VAR(have_symlink), NO_CMD_LINE)
 
static Sys_var_have Sys_have_statement_timeout ("have_statement_timeout", "have_statement_timeout", READ_ONLY NON_PERSIST GLOBAL_VAR(have_statement_timeout), NO_CMD_LINE)
 
static Sys_var_bool Sys_general_log ("general_log", "Log connections and queries to a table or log file. " "Defaults to logging to a file hostname.log, " "or if --log-output=TABLE is used, to a table mysql.general_log.", GLOBAL_VAR(opt_general_log), CMD_LINE(OPT_ARG), DEFAULT(false), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(fix_general_log_state))
 
static Sys_var_bool Sys_slow_query_log ("slow_query_log", "Log slow queries to a table or log file. Defaults logging to a file " "hostname-slow.log or a table mysql.slow_log if --log-output=TABLE is " "used. Must be enabled to activate other slow log options", GLOBAL_VAR(opt_slow_log), CMD_LINE(OPT_ARG), DEFAULT(false), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(fix_slow_log_state))
 
static Sys_var_bool Sys_slow_log_extra ("log_slow_extra", "Print more attributes to the slow query log file. Has no effect on " "logging to table.", GLOBAL_VAR(opt_log_slow_extra), CMD_LINE(OPT_ARG), DEFAULT(false), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_slow_log_extra), ON_UPDATE(0))
 
static const char * log_output_names [] = {"NONE", "FILE", "TABLE", NULL}
 
static Sys_var_set Sys_log_output ("log_output", "Syntax: log-output=value[,value...], " "where \alue\could be TABLE, FILE or NONE", GLOBAL_VAR(log_output_options), CMD_LINE(REQUIRED_ARG), log_output_names, DEFAULT(LOG_FILE), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_not_empty_set), ON_UPDATE(fix_log_output))
 
static Sys_var_bool Sys_log_slave_updates ("log_slave_updates", "Tells the slave to log the updates from " "the slave thread to the binary log.", READ_ONLY GLOBAL_VAR(opt_log_slave_updates), CMD_LINE(OPT_ARG, OPT_LOG_SLAVE_UPDATES), DEFAULT(1))
 
static Sys_var_charptr Sys_relay_log ("relay_log", "The location and name to use for relay logs", READ_ONLY NON_PERSIST GLOBAL_VAR(opt_relay_logname), CMD_LINE(REQUIRED_ARG), IN_FS_CHARSET, DEFAULT(0))
 
static Sys_var_charptr Sys_relay_log_index ("relay_log_index", "The location and name to use for the file " "that keeps a list of the last relay logs", READ_ONLY NON_PERSIST GLOBAL_VAR(relay_log_index), NO_CMD_LINE, IN_FS_CHARSET, DEFAULT(0))
 
static Sys_var_charptr Sys_binlog_index ("log_bin_index", "File that holds the names for last binary log files.", READ_ONLY NON_PERSIST GLOBAL_VAR(log_bin_index), NO_CMD_LINE, IN_FS_CHARSET, DEFAULT(0))
 
static Sys_var_charptr Sys_relay_log_basename ("relay_log_basename", "The full path of the relay log file names, excluding the extension.", READ_ONLY NON_PERSIST GLOBAL_VAR(relay_log_basename), NO_CMD_LINE, IN_FS_CHARSET, DEFAULT(0))
 
static Sys_var_charptr Sys_log_bin_basename ("log_bin_basename", "The full path of the binary log file names, excluding the extension.", READ_ONLY NON_PERSIST GLOBAL_VAR(log_bin_basename), NO_CMD_LINE, IN_FS_CHARSET, DEFAULT(0))
 
static Sys_var_charptr Sys_relay_log_info_file ("relay_log_info_file", "The location and name of the file that " "remembers where the SQL replication thread is in the relay logs", READ_ONLY NON_PERSIST GLOBAL_VAR(relay_log_info_file), CMD_LINE(REQUIRED_ARG), IN_FS_CHARSET, DEFAULT(0))
 
static Sys_var_bool Sys_relay_log_purge ("relay_log_purge", "if disabled - do not purge relay logs. " "if enabled - purge them as soon as they are no more needed", GLOBAL_VAR(relay_log_purge), CMD_LINE(OPT_ARG), DEFAULT(true))
 
static Sys_var_bool Sys_relay_log_recovery ("relay_log_recovery", "Enables automatic relay log recovery " "right after the database startup, which means that the IO Thread " "starts re-fetching from the master right after the last transaction " "processed", READ_ONLY GLOBAL_VAR(relay_log_recovery), CMD_LINE(OPT_ARG), DEFAULT(false))
 
static Sys_var_ulong Sys_rpl_read_size ("rpl_read_size", "The size for reads done from the binlog and relay log. " "It must be a multiple of 4kb. Making it larger might help with IO " "stalls while reading these files when they are not in the OS buffer " "cache", GLOBAL_VAR(rpl_read_size), CMD_LINE(REQUIRED_ARG), VALID_RANGE(IO_SIZE *2, ULONG_MAX), DEFAULT(IO_SIZE *2), BLOCK_SIZE(IO_SIZE))
 
static Sys_var_bool Sys_slave_allow_batching ("slave_allow_batching", "Allow slave to batch requests", GLOBAL_VAR(opt_slave_allow_batching), CMD_LINE(OPT_ARG), DEFAULT(false))
 
static Sys_var_charptr Sys_slave_load_tmpdir ("slave_load_tmpdir", "The location where the slave should put " "its temporary files when replicating a LOAD DATA INFILE command", READ_ONLY NON_PERSIST GLOBAL_VAR(slave_load_tmpdir), CMD_LINE(REQUIRED_ARG), IN_FS_CHARSET, DEFAULT(0))
 
static PolyLock_mutex PLock_slave_net_timeout & LOCK_slave_net_timeout
 
static Sys_var_uint Sys_slave_net_timeout ("slave_net_timeout", "Number of seconds to wait for more data " "from a master/slave connection before aborting the read", GLOBAL_VAR(slave_net_timeout), CMD_LINE(REQUIRED_ARG), VALID_RANGE(1, LONG_TIMEOUT), DEFAULT(SLAVE_NET_TIMEOUT), BLOCK_SIZE(1), &PLock_slave_net_timeout, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(fix_slave_net_timeout))
 
static PolyLock_mutex PLock_sql_slave_skip_counter & LOCK_sql_slave_skip_counter
 
static Sys_var_uint Sys_slave_skip_counter ("sql_slave_skip_counter", "sql_slave_skip_counter", GLOBAL_VAR(sql_slave_skip_counter), NO_CMD_LINE, VALID_RANGE(0, UINT_MAX), DEFAULT(0), BLOCK_SIZE(1), &PLock_sql_slave_skip_counter, NOT_IN_BINLOG, ON_CHECK(check_slave_skip_counter))
 
static Sys_var_charptr Sys_slave_skip_errors ("slave_skip_errors", "Tells the slave thread to continue " "replication when a query event returns an error from the " "provided list", READ_ONLY GLOBAL_VAR(opt_slave_skip_errors), CMD_LINE(REQUIRED_ARG), IN_SYSTEM_CHARSET, DEFAULT(0))
 
static Sys_var_ulonglong Sys_relay_log_space_limit ("relay_log_space_limit", "Maximum space to use for all relay logs", READ_ONLY GLOBAL_VAR(relay_log_space_limit), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, ULONG_MAX), DEFAULT(0), BLOCK_SIZE(1))
 
static Sys_var_uint Sys_sync_relaylog_period ("sync_relay_log", "Synchronously flush relay log to disk after " "every #th event. Use 0 to disable synchronous flushing", GLOBAL_VAR(sync_relaylog_period), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, UINT_MAX), DEFAULT(10000), BLOCK_SIZE(1))
 
static Sys_var_uint Sys_sync_relayloginfo_period ("sync_relay_log_info", "Synchronously flush relay log info " "to disk after every #th transaction. Use 0 to disable " "synchronous flushing", GLOBAL_VAR(sync_relayloginfo_period), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, UINT_MAX), DEFAULT(10000), BLOCK_SIZE(1))
 
static Sys_var_uint Sys_checkpoint_mts_period ("slave_checkpoint_period", "Gather workers' activities to " "Update progress status of Multi-threaded slave and flush " "the relay log info to disk after every #th milli-seconds.", GLOBAL_VAR(opt_mts_checkpoint_period), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, UINT_MAX), DEFAULT(300), BLOCK_SIZE(1))
 
static Sys_var_uint Sys_checkpoint_mts_group ("slave_checkpoint_group", "Maximum number of processed transactions by Multi-threaded slave " "before a checkpoint operation is called to update progress status.", GLOBAL_VAR(opt_mts_checkpoint_group), CMD_LINE(REQUIRED_ARG), VALID_RANGE(1, MTS_MAX_BITS_IN_GROUP), DEFAULT(512), BLOCK_SIZE(1))
 
static Sys_var_uint Sys_sync_binlog_period ("sync_binlog", "Synchronously flush binary log to disk after" " every #th write to the file. Use 0 to disable synchronous" " flushing", GLOBAL_VAR(sync_binlog_period), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, UINT_MAX), DEFAULT(1), BLOCK_SIZE(1))
 
static Sys_var_uint Sys_sync_masterinfo_period ("sync_master_info", "Synchronously flush master info to disk " "after every #th event. Use 0 to disable synchronous flushing", GLOBAL_VAR(sync_masterinfo_period), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, UINT_MAX), DEFAULT(10000), BLOCK_SIZE(1))
 
static Sys_var_ulonglong Sys_var_original_commit_timestamp ("original_commit_timestamp", "The time when the current transaction was committed on the originating " "replication master, measured in microseconds since the epoch.", SESSION_ONLY(original_commit_timestamp), NO_CMD_LINE, VALID_RANGE(0, MAX_COMMIT_TIMESTAMP_VALUE), DEFAULT(MAX_COMMIT_TIMESTAMP_VALUE), BLOCK_SIZE(1), NO_MUTEX_GUARD, IN_BINLOG, ON_CHECK(check_session_admin))
 
static Sys_var_ulong Sys_slave_trans_retries ("slave_transaction_retries", "Number of times the slave SQL " "thread will retry a transaction in case it failed with a deadlock " "or elapsed lock wait timeout, before giving up and stopping", GLOBAL_VAR(slave_trans_retries), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, ULONG_MAX), DEFAULT(10), BLOCK_SIZE(1))
 
static Sys_var_ulong Sys_slave_parallel_workers ("slave_parallel_workers", "Number of worker threads for executing events in parallel ", PERSIST_AS_READONLY GLOBAL_VAR(opt_mts_slave_parallel_workers), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, MTS_MAX_WORKERS), DEFAULT(0), BLOCK_SIZE(1))
 
static Sys_var_ulonglong Sys_mts_pending_jobs_size_max ("slave_pending_jobs_size_max", "Max size of Slave Worker queues holding yet not applied events." "The least possible value must be not less than the master side " "max_allowed_packet.", GLOBAL_VAR(opt_mts_pending_jobs_size_max), CMD_LINE(REQUIRED_ARG), VALID_RANGE(1024,(ulonglong) ~(intptr) 0), DEFAULT(128 *1024 *1024), BLOCK_SIZE(1024), ON_CHECK(0))
 
static Sys_var_struct< MY_LOCALE, Get_locale_name > Sys_lc_messages ("lc_messages", "Set the language used for the error messages", SESSION_VAR(lc_messages), NO_CMD_LINE, DEFAULT(&my_default_lc_messages), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_locale))
 
static Sys_var_struct< MY_LOCALE, Get_locale_name > Sys_lc_time_names ("lc_time_names", "Set the language used for the month " "names and the days of the week", SESSION_VAR(lc_time_names), NO_CMD_LINE, DEFAULT(&my_default_lc_time_names), NO_MUTEX_GUARD, IN_BINLOG, ON_CHECK(check_locale))
 
static Sys_var_tz Sys_time_zone ("time_zone", "time_zone", SESSION_VAR(time_zone), NO_CMD_LINE, DEFAULT(&default_tz), NO_MUTEX_GUARD, IN_BINLOG)
 
static Sys_var_uint Sys_host_cache_size ("host_cache_size", "How many host names should be cached to avoid resolving.", GLOBAL_VAR(host_cache_size), CMD_LINE(REQUIRED_ARG, OPT_HOST_CACHE_SIZE), VALID_RANGE(0, 65536), DEFAULT(HOST_CACHE_SIZE), BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(NULL), ON_UPDATE(fix_host_cache_size))
 
const Sys_var_multi_enum::ALIAS enforce_gtid_consistency_aliases []
 
static Sys_var_enforce_gtid_consistency Sys_enforce_gtid_consistency ("enforce_gtid_consistency", "Prevents execution of statements that would be impossible to log " "in a transactionally safe manner. Currently, the disallowed " "statements include CREATE TEMPORARY TABLE inside transactions, " "all updates to non-transactional tables, and CREATE TABLE ... SELECT.", PERSIST_AS_READONLY GLOBAL_VAR(_gtid_consistency_mode), CMD_LINE(OPT_ARG, OPT_ENFORCE_GTID_CONSISTENCY), enforce_gtid_consistency_aliases, 3, DEFAULT(3), DEFAULT(GTID_CONSISTENCY_MODE_ON), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_session_admin_outside_trx_outside_sf_outside_sp))
 
static Sys_var_bool Sys_binlog_gtid_simple_recovery ("binlog_gtid_simple_recovery", "If this option is enabled, the server does not open more than " "two binary logs when initializing GTID_PURGED and " "GTID_EXECUTED, either during server restart or when binary " "logs are being purged. Enabling this option is useful when " "the server has already generated many binary logs without " "GTID events (e.g., having GTID_MODE = OFF). Note: If this " "option is enabled, GLOBAL.GTID_EXECUTED and " "GLOBAL.GTID_PURGED may be initialized wrongly in two cases: " "(1) All binary logs were generated by MySQL 5.7.5 or older, " "and GTID_MODE was ON for some binary logs but OFF for the " "newest binary log. (2) The oldest existing binary log was " "generated by MySQL 5.7.5 or older, and SET GTID_PURGED was " "issued after the oldest binary log was generated. If a wrong " "set is computed in one of case (1) or case (2), it will " "remain wrong even if the server is later restarted with this " "option disabled.", READ_ONLY GLOBAL_VAR(binlog_gtid_simple_recovery), CMD_LINE(OPT_ARG), DEFAULT(true))
 
static Sys_var_ulong Sys_sp_cache_size ("stored_program_cache", "The soft upper limit for number of cached stored routines for " "one connection.", GLOBAL_VAR(stored_program_cache_size), CMD_LINE(REQUIRED_ARG), VALID_RANGE(16, 512 *1024), DEFAULT(256), BLOCK_SIZE(1))
 
static Sys_var_bool Sys_pseudo_slave_mode ("pseudo_slave_mode", "SET pseudo_slave_mode= 0,1 are commands that mysqlbinlog " "adds to beginning and end of binary log dumps. While zero " "value indeed disables, the actual enabling of the slave " "applier execution mode is done implicitly when a " "Format_description_event is sent through the session.", SESSION_ONLY(pseudo_slave_mode), NO_CMD_LINE, DEFAULT(false), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_pseudo_slave_mode))
 
static Sys_var_gtid_next Sys_gtid_next ("gtid_next", "Specifies the Global Transaction Identifier for the following " "transaction.", SESSION_ONLY(gtid_next), NO_CMD_LINE, DEFAULT("AUTOMATIC"), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_gtid_next))
 
export sys_varSys_gtid_next_ptr = &Sys_gtid_next
 
static Sys_var_gtid_executed Sys_gtid_executed ("gtid_executed", "The global variable contains the set of GTIDs in the " "binary log. The session variable contains the set of GTIDs " "in the current, ongoing transaction.")
 
Gtid_setgtid_purged
 
static Sys_var_gtid_purged Sys_gtid_purged ("gtid_purged", "The set of GTIDs that existed in previous, purged binary logs.", GLOBAL_VAR(gtid_purged), NO_CMD_LINE, DEFAULT(NULL), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_gtid_purged))
 
export sys_varSys_gtid_purged_ptr = &Sys_gtid_purged
 
static Sys_var_gtid_owned Sys_gtid_owned ("gtid_owned", "The global variable lists all GTIDs owned by all threads. " "The session variable lists all GTIDs owned by the current thread.")
 
static Sys_var_gtid_mode Sys_gtid_mode ("gtid_mode", "Controls whether Global Transaction Identifiers (GTIDs) are " "enabled. Can be OFF, OFF_PERMISSIVE, ON_PERMISSIVE, or ON. OFF " "means that no transaction has a GTID. OFF_PERMISSIVE means that " "new transactions (committed in a client session using " "GTID_NEXT='AUTOMATIC') are not assigned any GTID, and " "replicated transactions are allowed to have or not have a " "GTID. ON_PERMISSIVE means that new transactions are assigned a " "GTID, and replicated transactions are allowed to have or not " "have a GTID. ON means that all transactions have a GTID. " "ON is required on a master before any slave can use " "MASTER_AUTO_POSITION=1. To safely switch from OFF to ON, first " "set all servers to OFF_PERMISSIVE, then set all servers to " "ON_PERMISSIVE, then wait for all transactions without a GTID to " "be replicated and executed on all servers, and finally set all " "servers to GTID_MODE = ON.", PERSIST_AS_READONLY GLOBAL_VAR(_gtid_mode), CMD_LINE(REQUIRED_ARG), gtid_mode_names, DEFAULT(DEFAULT_GTID_MODE), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_session_admin_outside_trx_outside_sf_outside_sp))
 
static Sys_var_uint Sys_gtid_executed_compression_period ("gtid_executed_compression_period", "When binlog is disabled, " "a background thread wakes up to compress the gtid_executed table " "every gtid_executed_compression_period transactions, as a " "special case, if variable is 0, the thread never wakes up " "to compress the gtid_executed table.", GLOBAL_VAR(gtid_executed_compression_period), CMD_LINE(OPT_ARG), VALID_RANGE(0, UINT_MAX32), DEFAULT(1000), BLOCK_SIZE(1))
 
static Sys_var_bool Sys_disconnect_on_expired_password ("disconnect_on_expired_password", "Give clients that don't signal password expiration support execution " "time " "error(s) instead of connection error", READ_ONLY GLOBAL_VAR(disconnect_on_expired_password), CMD_LINE(OPT_ARG), DEFAULT(true))
 
static Sys_var_bool Sys_validate_user_plugins ("validate_user_plugins", "Turns on additional validation of authentication plugins assigned " "to user accounts. ", READ_ONLY NOT_VISIBLE GLOBAL_VAR(validate_user_plugins), CMD_LINE(OPT_ARG), DEFAULT(true), NO_MUTEX_GUARD, NOT_IN_BINLOG)
 
static Sys_var_enum Sys_block_encryption_mode ("block_encryption_mode", "mode for AES_ENCRYPT/AES_DECRYPT", SESSION_VAR(my_aes_mode), CMD_LINE(REQUIRED_ARG), my_aes_opmode_names, DEFAULT(my_aes_128_ecb))
 
static Sys_var_charptr Sys_track_session_sys_vars ("session_track_system_variables", "Track changes in registered system variables.", SESSION_VAR(track_sysvars_ptr), CMD_LINE(REQUIRED_ARG), IN_FS_CHARSET, DEFAULT("time_zone,autocommit,character_set_client,character_set_results," "character_set_connection"), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_track_session_sys_vars), ON_UPDATE(update_track_session_sys_vars))
 
static Sys_var_bool Sys_session_track_schema ("session_track_schema", "Track changes to the 'default schema'.", SESSION_VAR(session_track_schema), CMD_LINE(OPT_ARG), DEFAULT(true), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(update_session_track_schema))
 
static const char * session_track_transaction_info_names []
 
static Sys_var_enum Sys_session_track_transaction_info ("session_track_transaction_info", "Track changes to the transaction attributes. OFF to disable; " "STATE to track just transaction state (Is there an active transaction? " "Does it have any data? etc.); CHARACTERISTICS to track transaction " "state " "and report all statements needed to start a transaction with the same " "characteristics (isolation level, read only/read write, snapshot - " "but not any work done / data modified within the transaction).", SESSION_VAR(session_track_transaction_info), CMD_LINE(REQUIRED_ARG), session_track_transaction_info_names, DEFAULT(OFF), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(update_session_track_tx_info))
 
static Sys_var_bool Sys_session_track_state_change ("session_track_state_change", "Track changes to the 'session state'.", SESSION_VAR(session_track_state_change), CMD_LINE(OPT_ARG), DEFAULT(false), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(update_session_track_state_change))
 
static Sys_var_bool Sys_offline_mode ("offline_mode", "Make the server into offline mode", GLOBAL_VAR(offline_mode), CMD_LINE(OPT_ARG), DEFAULT(false), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(handle_offline_mode))
 
static Sys_var_bool Sys_avoid_temporal_upgrade ("avoid_temporal_upgrade", "When this option is enabled, the pre-5.6.4 temporal types are " "not upgraded to the new format for ALTER TABLE requests " "ADD/CHANGE/MODIFY" " COLUMN, ADD INDEX or FORCE operation. " "This variable is deprecated and will be removed in a future release.", GLOBAL_VAR(avoid_temporal_upgrade), CMD_LINE(OPT_ARG, OPT_AVOID_TEMPORAL_UPGRADE), DEFAULT(false), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(0), DEPRECATED_VAR(""))
 
static Sys_var_bool Sys_show_old_temporals ("show_old_temporals", "When this option is enabled, the pre-5.6.4 temporal types will " "be marked in the 'SHOW CREATE TABLE' and 'INFORMATION_SCHEMA.COLUMNS' " "table as a comment in COLUMN_TYPE field. " "This variable is deprecated and will be removed in a future release.", SESSION_VAR(show_old_temporals), CMD_LINE(OPT_ARG, OPT_SHOW_OLD_TEMPORALS), DEFAULT(false), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(0), DEPRECATED_VAR(""))
 
static Sys_var_charptr Sys_disabled_storage_engines ("disabled_storage_engines", "Limit CREATE TABLE for the storage engines listed", READ_ONLY GLOBAL_VAR(opt_disabled_storage_engines), CMD_LINE(REQUIRED_ARG), IN_SYSTEM_CHARSET, DEFAULT(""))
 
static PolyLock_mutex PLock_sys_mandatory_roles & LOCK_mandatory_roles
 
static Sys_var_lexstring Sys_mandatory_roles ("mandatory_roles", "All the specified roles are always considered granted to every user and " "they" " can't be revoked. Mandatory roles still require activation unless they " "are made into " "default roles. The granted roles will not be visible in the " "mysql.role_edges" " table.", GLOBAL_VAR(opt_mandatory_roles), CMD_LINE(REQUIRED_ARG), IN_SYSTEM_CHARSET, DEFAULT(""), &PLock_sys_mandatory_roles, NOT_IN_BINLOG, ON_CHECK(sysvar_check_authid_string), ON_UPDATE(sysvar_update_mandatory_roles))
 
static Sys_var_bool Sys_always_activate_granted_roles ("activate_all_roles_on_login", "Automatically set all granted roles as active after the user has " "authenticated successfully.", GLOBAL_VAR(opt_always_activate_granted_roles), CMD_LINE(OPT_ARG), DEFAULT(false), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(0))
 
static PolyLock_mutex plock_sys_password_history & LOCK_password_history
 
static Sys_var_uint Sys_password_history ("password_history", "The number of old passwords to check in the history." " Set to 0 (the default) to turn the checks off", GLOBAL_VAR(global_password_history), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, UINT_MAX32), DEFAULT(0), BLOCK_SIZE(1), &plock_sys_password_history)
 
static PolyLock_mutex plock_sys_password_reuse_interval & LOCK_password_reuse_interval
 
static Sys_var_uint Sys_password_reuse_interval ("password_reuse_interval", "The minimum number of days that need to pass before a password can " "be reused. Set to 0 (the default) to turn the checks off", GLOBAL_VAR(global_password_reuse_interval), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, UINT_MAX32), DEFAULT(0), BLOCK_SIZE(1), &plock_sys_password_reuse_interval)
 
static const char * resultset_metadata_names [] = {"NONE", "FULL", NullS}
 
static Sys_var_enum Sys_resultset_metadata ("resultset_metadata", "Controls what meatadata the server will send to the client: " "either FULL (default) for all metadata, NONE for no metadata.", SESSION_ONLY(resultset_metadata), NO_CMD_LINE, resultset_metadata_names, DEFAULT(static_cast< ulong >(RESULTSET_METADATA_FULL)), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_resultset_metadata), ON_UPDATE(0))
 
const char * binlog_row_value_options_names [] = {"PARTIAL_JSON", 0}
 
static Sys_var_set Sys_binlog_row_value_options ("binlog_row_value_options", "When set to PARTIAL_JSON, this option enables a space-efficient " "row-based binary log format for UPDATE statements that modify a " "JSON value using only the functions JSON_SET, JSON_REPLACE, and " "JSON_REMOVE. For such updates, only the modified parts of the " "JSON document are included in the binary log, so small changes of " "big documents may need significantly less space.", SESSION_VAR(binlog_row_value_options), CMD_LINE(REQUIRED_ARG), binlog_row_value_options_names, DEFAULT(0), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_binlog_row_value_options))
 
static PolyLock_mutex PLock_keyring_operations & LOCK_keyring_operations
 This is a mutex used to protect global variable @keyring_operations. More...
 
static Sys_var_bool Sys_keyring_operations ("keyring_operations", "This variable provides access to keyring service APIs. When this " "option is disabled calls to keyring_key_generate(), keyring_key_store() " "and keyring_key_remove() will report error until this variable is " "enabled.", NON_PERSIST GLOBAL_VAR(opt_keyring_operations), NO_CMD_LINE, DEFAULT(true), &PLock_keyring_operations, NOT_IN_BINLOG, ON_CHECK(check_keyring_access), ON_UPDATE(0))
 This variable provides access to keyring service APIs. More...
 
static Sys_var_struct< CHARSET_INFO, Get_name > Sys_default_collation_for_utf8mb4 ("default_collation_for_utf8mb4", "Controls default collation for utf8mb4 while replicating implicit " "utf8mb4 collations.", SESSION_VAR(default_collation_for_utf8mb4), NO_CMD_LINE, DEFAULT(&my_charset_utf8mb4_0900_ai_ci), NO_MUTEX_GUARD, IN_BINLOG, ON_CHECK(check_default_collation_for_utf8mb4), ON_UPDATE(update_deprecated))
 
static Sys_var_bool Sys_show_create_table_verbosity ("show_create_table_verbosity", "When this option is enabled, it increases the verbosity of " "'SHOW CREATE TABLE'.", SESSION_VAR(show_create_table_verbosity), CMD_LINE(OPT_ARG), DEFAULT(false), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(0))
 
static const char * use_secondary_engine_values []
 
static Sys_var_enum Sys_use_secondary_engine ("use_secondary_engine", "Controls preparation of SELECT statements against secondary storage " "engine. Valid values: OFF/ON/FORCED. OFF = Prepare only against primary " "storage engine. ON = First prepare against secondary storage engine, " "reprepare against primary storage engine if error. FORCED = Prepare all " "SELECT statements referencing one or more base tables only against " "secondary storage engine.", HINT_UPDATEABLE SESSION_ONLY(use_secondary_engine), NO_CMD_LINE, use_secondary_engine_values, DEFAULT(SECONDARY_ENGINE_ON), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(nullptr), ON_UPDATE(nullptr))
 
static Sys_var_double Sys_secondary_engine_cost_threshold ("secondary_engine_cost_threshold", "Controls which statements to consider for execution in a secondary " "storage engine. Only statements that have a cost estimate higher than " "this value will be attempted executed in a secondary storage engine.", HINT_UPDATEABLE SESSION_VAR(secondary_engine_cost_threshold), CMD_LINE(OPT_ARG), VALID_RANGE(0, DBL_MAX), DEFAULT(100000), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(nullptr), ON_UPDATE(nullptr))
 Cost threshold for executing queries in a secondary storage engine. More...
 
static Sys_var_bool Sys_sql_require_primary_key
 
static Sys_var_charptr Sys_sys_variables_admin_subject (PERSIST_ONLY_ADMIN_X509_SUBJECT, "The client peer certificate name required to enable setting all " "system variables via SET PERSIST[_ONLY]", READ_ONLY NON_PERSIST GLOBAL_VAR(sys_var_persist_only_admin_x509_subject), CMD_LINE(OPT_ARG), IN_SYSTEM_CHARSET, DEFAULT(""))
 
static Sys_var_ulong Sys_binlog_row_event_max_size ("binlog_row_event_max_size", "The maximum size of a row-based binary log event in bytes. Rows will be " "grouped into events smaller than this size if possible. " "The value has to be a multiple of 256.", READ_ONLY GLOBAL_VAR(binlog_row_event_max_size), CMD_LINE(REQUIRED_ARG), VALID_RANGE(256, ULONG_MAX), DEFAULT(8192), BLOCK_SIZE(256))
 
static const char * group_replication_consistency_names []
 
static Sys_var_enum Sys_group_replication_consistency ("group_replication_consistency", "Transaction consistency guarantee, possible values: EVENTUAL, " "BEFORE_ON_PRIMARY_FAILOVER, BEFORE, AFTER, BEFORE_AND_AFTER", SESSION_VAR(group_replication_consistency), CMD_LINE(OPT_ARG), group_replication_consistency_names, DEFAULT(GROUP_REPLICATION_CONSISTENCY_EVENTUAL), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_group_replication_consistency), ON_UPDATE(0))
 
static Sys_var_binlog_encryption Sys_binlog_encryption ("binlog_encryption", "Enable/disable binary and relay logs encryption.", GLOBAL_VAR(rpl_encryption.get_enabled_var()), CMD_LINE(OPT_ARG), DEFAULT(false), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_binlog_encryption_admin))
 
static Sys_var_bool Sys_binlog_rotate_encryption_master_key_at_startup ("binlog_rotate_encryption_master_key_at_startup", "Force binlog encryption master key rotation at startup", READ_ONLY GLOBAL_VAR(rpl_encryption.get_master_key_rotation_at_startup_var()), CMD_LINE(OPT_ARG), DEFAULT(false), NO_MUTEX_GUARD, NOT_IN_BINLOG)
 
static Sys_var_uint Sys_original_server_version ("original_server_version", "The version of the server where the transaction was originally executed", SESSION_ONLY(original_server_version), NO_CMD_LINE, VALID_RANGE(0, UNDEFINED_SERVER_VERSION), DEFAULT(UNDEFINED_SERVER_VERSION), BLOCK_SIZE(1), NO_MUTEX_GUARD, IN_BINLOG, ON_CHECK(check_session_admin))
 
static Sys_var_uint Sys_immediate_server_version ("immediate_server_version", "The server version of the immediate server in the replication topology", SESSION_ONLY(immediate_server_version), NO_CMD_LINE, VALID_RANGE(0, UNDEFINED_SERVER_VERSION), DEFAULT(UNDEFINED_SERVER_VERSION), BLOCK_SIZE(1), NO_MUTEX_GUARD, IN_BINLOG, ON_CHECK(check_session_admin))
 
static Sys_var_bool Sys_default_table_encryption ("default_table_encryption", "Database and tablespace created with this default encryption property" "unless, the user specify a explicit encryption property.", HINT_UPDATEABLE SESSION_VAR(default_table_encryption), CMD_LINE(OPT_ARG), DEFAULT(false), NO_MUTEX_GUARD, IN_BINLOG, ON_CHECK(check_set_default_table_encryption_access), ON_UPDATE(0))
 
static Sys_var_bool Sys_table_encryption_privilege_check ("table_encryption_privilege_check", "Indicates if server enables privilege check when user tries to use " "non-default value for CREATE DATABASE or CREATE TABLESPACE or when " "user tries to do CREATE TABLE with ENCRYPTION option which deviates " "from per-database default.", GLOBAL_VAR(opt_table_encryption_privilege_check), CMD_LINE(OPT_ARG), DEFAULT(false), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_set_table_encryption_privilege_access), ON_UPDATE(0))
 

Detailed Description

Definitions of all server's session or global variables.

How to add new variables:

  1. copy one of the existing variables, and edit the declaration.
  2. if you need special behavior on assignment or additional checks use ON_CHECK and ON_UPDATE callbacks.
  3. Don't add new Sys_var classes or uncle Occam will come with his razor to haunt you at nights

Note - all storage engine variables (for example myisam_whatever) should go into the corresponding storage engine sources (for example in storage/myisam/ha_myisam.cc) !

Macro Definition Documentation

◆ export

#define export   /* not static */

◆ PFS_TRAILING_PROPERTIES

#define PFS_TRAILING_PROPERTIES
Value:
static Sys_var_ulong ON_UPDATE(NULL))
Sergei Dialog Client Authentication NULL
Definition: dialog.cc:352
static Sys_var_ulong NOT_IN_BINLOG
Definition: sys_vars.cc:3619
#define NO_MUTEX_GUARD
Definition: sys_vars.h:118
static Sys_var_ulong ON_CHECK(NULL)
static const int PARSE_EARLY
Definition: set_var.h:127

Function Documentation

◆ binlog_direct_check()

static bool binlog_direct_check ( sys_var self,
THD thd,
set_var var 
)
static

◆ binlog_format_check()

static bool binlog_format_check ( sys_var self,
THD thd,
set_var var 
)
static

◆ check_binlog_encryption_admin()

static bool check_binlog_encryption_admin ( sys_var ,
THD thd,
set_var  
)
static

◆ check_binlog_row_image()

static bool check_binlog_row_image ( sys_var self,
THD thd,
set_var var 
)
static

◆ check_binlog_row_value_options()

static bool check_binlog_row_value_options ( sys_var self,
THD thd,
set_var var 
)
static

◆ check_binlog_transaction_dependency_tracking()

static bool check_binlog_transaction_dependency_tracking ( sys_var ,
THD ,
set_var var 
)
static

◆ check_charset()

static bool check_charset ( sys_var ,
THD thd,
set_var var 
)
static

◆ check_charset_db()

static bool check_charset_db ( sys_var self,
THD thd,
set_var var 
)
static

◆ check_charset_not_null()

static bool check_charset_not_null ( sys_var self,
THD thd,
set_var var 
)
static

◆ check_collation_db()

static bool check_collation_db ( sys_var self,
THD thd,
set_var var 
)
static

◆ check_collation_not_null()

static bool check_collation_not_null ( sys_var self,
THD thd,
set_var var 
)
static

◆ check_cs_client()

static bool check_cs_client ( sys_var self,
THD thd,
set_var var 
)
static

◆ check_cs_filesystem()

static bool check_cs_filesystem ( sys_var self,
THD thd,
set_var var 
)
static

◆ check_default_collation_for_utf8mb4()

static bool check_default_collation_for_utf8mb4 ( sys_var self,
THD thd,
set_var var 
)
static

◆ check_expire_logs_days()

static bool check_expire_logs_days ( sys_var ,
THD ,
set_var var 
)
static

◆ check_expire_logs_seconds()

static bool check_expire_logs_seconds ( sys_var ,
THD ,
set_var var 
)
static

◆ check_explicit_defaults_for_timestamp()

static bool check_explicit_defaults_for_timestamp ( sys_var self,
THD thd,
set_var var 
)
static

◆ check_ftb_syntax()

static bool check_ftb_syntax ( sys_var ,
THD ,
set_var var 
)
static

◆ check_group_replication_consistency()

static bool check_group_replication_consistency ( sys_var self,
THD thd,
set_var var 
)
static

◆ check_gtid_next()

static bool check_gtid_next ( sys_var self,
THD thd,
set_var var 
)
static

Check-function to @GTID_NEXT system variable.

Parameters
selfa pointer to the sys_var, i.e. gtid_next
thda reference to THD object
vara pointer to the set_var created by the parser.
Returns
false if the change is allowed, otherwise true.

◆ check_gtid_purged()

static bool check_gtid_purged ( sys_var self,
THD thd,
set_var var 
)
static

◆ check_init_string()

static bool check_init_string ( sys_var ,
THD ,
set_var var 
)
static

◆ check_keyring_access()

static bool check_keyring_access ( sys_var ,
THD thd,
set_var  
)
static

◆ check_locale()

static bool check_locale ( sys_var self,
THD thd,
set_var var 
)
static

◆ check_log_bin_use_v1_row_events()

static bool check_log_bin_use_v1_row_events ( sys_var ,
THD thd,
set_var var 
)
static

◆ check_log_error_services()

static bool check_log_error_services ( sys_var self,
THD thd,
set_var var 
)
static

◆ check_log_error_suppression_list()

static bool check_log_error_suppression_list ( sys_var self,
THD thd,
set_var var 
)
static

◆ check_log_path()

static bool check_log_path ( sys_var self,
THD ,
set_var var 
)
static

◆ check_max_allowed_packet()

static bool check_max_allowed_packet ( sys_var self,
THD thd,
set_var var 
)
static

◆ check_max_delayed_threads()

static bool check_max_delayed_threads ( sys_var ,
THD ,
set_var var 
)
static

◆ check_net_buffer_length()

static bool check_net_buffer_length ( sys_var self,
THD thd,
set_var var 
)
static

◆ check_not_empty_set()

static bool check_not_empty_set ( sys_var ,
THD ,
set_var var 
)
static

◆ check_not_null()

static bool check_not_null ( sys_var ,
THD ,
set_var var 
)
static

◆ check_not_null_not_empty()

static bool check_not_null_not_empty ( sys_var self,
THD thd,
set_var var 
)
static

empty value ('') is not allowed

◆ check_outside_trx()

static bool check_outside_trx ( sys_var ,
THD thd,
set_var var 
)
static

◆ check_partial_revokes()

static bool check_partial_revokes ( sys_var self,
THD thd,
set_var setv 
)
static

Checks, if there exists at least a partial revoke on a database at the time of turning OFF the system variable "@@partial_revokes".

If it does then throw error. if there exists at least a DB grant with wildcard entry at the time of turning ON the system variable "@@partial_revokes". If it does then throw error.

Return values
truefailure
falsesuccess
Parameters
selfthe system variable to set value for
thdthe session context
setvthe SET operations metadata

◆ check_pseudo_slave_mode()

static bool check_pseudo_slave_mode ( sys_var self,
THD thd,
set_var var 
)
static

◆ check_read_only()

static bool check_read_only ( sys_var ,
THD thd,
set_var  
)
static

◆ check_require_secure_transport()

static bool check_require_secure_transport ( sys_var ,
THD ,
set_var var 
)
static

◆ check_resultset_metadata()

static bool check_resultset_metadata ( sys_var ,
THD thd,
set_var var 
)
static

◆ check_session_admin()

static bool check_session_admin ( sys_var self,
THD thd,
set_var setv 
)
static

Check if SESSION_VARIABLES_ADMIN granted.

Throw SQL error if not.

Use this when setting session variables that are sensitive and should be protected.

We also accept SYSTEM_VARIABLES_ADMIN since it doesn't make a lot of sense to be allowed to set the global variable and not the session ones.

Note
For compatibility we also accept SUPER.
Return values
truefailure
falsesuccess
Parameters
selfthe system variable to set value for
thdthe session context
setvthe SET operations metadata

◆ check_session_admin_outside_trx_outside_sf()

static bool check_session_admin_outside_trx_outside_sf ( sys_var self,
THD thd,
set_var var 
)
static

◆ check_session_admin_outside_trx_outside_sf_outside_sp()

static bool check_session_admin_outside_trx_outside_sf_outside_sp ( sys_var self,
THD thd,
set_var var 
)
static

◆ check_set_default_table_encryption_access()

static bool check_set_default_table_encryption_access ( sys_var self,
THD thd,
set_var var 
)
static

◆ check_set_table_encryption_privilege_access()

static bool check_set_table_encryption_privilege_access ( sys_var ,
THD thd,
set_var  
)
static

◆ check_slave_skip_counter()

static bool check_slave_skip_counter ( sys_var ,
THD ,
set_var  
)
static

◆ check_slave_stopped()

static bool check_slave_stopped ( sys_var self,
THD thd,
set_var var 
)
static

◆ check_slow_log_extra()

static bool check_slow_log_extra ( sys_var ,
THD thd,
set_var  
)
static

◆ check_sql_log_bin()

static bool check_sql_log_bin ( sys_var self,
THD thd,
set_var var 
)
static

This function checks if the sql_log_bin can be changed, what is possible if:

  • the user is a super user;
  • the set is not called from within a function/trigger;
  • there is no on-going transaction.
Parameters
thdCurrent thread
[in]selfA pointer to the sys_var, i.e. Sys_log_binlog.
[in]varA pointer to the set_var created by the parser.
Returns
false if the change is allowed, otherwise true.

◆ check_sql_mode()

static bool check_sql_mode ( sys_var ,
THD thd,
set_var var 
)
static

◆ check_storage_engine()

static bool check_storage_engine ( sys_var self,
THD thd,
set_var var 
)
static

Check storage engine is not empty and log warning.

Checks if default_storage_engine or default_tmp_storage_engine is set empty and return true. This method also logs warning if the storage engine set is a disabled storage engine specified in disabled_storage_engines.

Parameters
selfpointer to system variable object.
thdConnection handle.
varpointer to set variable object.
Returns
true if the set variable is empty. false if the set variable is not empty.

◆ check_sub_modes_of_strict_mode()

static void check_sub_modes_of_strict_mode ( sql_mode_t sql_mode,
THD thd 
)
static

Check sql modes strict_mode, 'NO_ZERO_DATE', 'NO_ZERO_IN_DATE' and 'ERROR_FOR_DIVISION_BY_ZERO' are used together.

If only subset of it is set then warning is reported.

Parameters
sql_modesql mode.
thdCurrent thread

◆ check_timestamp()

static bool check_timestamp ( sys_var ,
THD ,
set_var var 
)
static

◆ check_track_session_sys_vars()

static bool check_track_session_sys_vars ( sys_var ,
THD thd,
set_var var 
)
static

◆ check_transaction_isolation()

static bool check_transaction_isolation ( sys_var ,
THD thd,
set_var var 
)
static

Function to check if the 'next' transaction isolation level can be changed.

Parameters
[in]thdThread handler.
[in]varA pointer to set_var holding the specified list of system variable names.
Return values
falseSuccess.
trueError.

◆ check_transaction_read_only()

static bool check_transaction_read_only ( sys_var ,
THD thd,
set_var var 
)
static

Function to check if the state of 'transaction_read_only' can be changed.

The state cannot be changed if there is already a transaction in progress.

Parameters
[in]thdThread handler
[in]varA pointer to set_var holding the specified list of system variable names.
Return values
falseSuccess.
trueError.

◆ event_scheduler_check()

static bool event_scheduler_check ( sys_var ,
THD ,
set_var var 
)
static

◆ event_scheduler_update()

static bool event_scheduler_update ( sys_var ,
THD ,
enum_var_type   
)
static

◆ expand_sql_mode()

export sql_mode_t expand_sql_mode ( sql_mode_t  sql_mode,
THD thd 
)

◆ fix_autocommit()

static bool fix_autocommit ( sys_var self,
THD thd,
enum_var_type  type 
)
static

◆ fix_binlog_cache_size()

static bool fix_binlog_cache_size ( sys_var ,
THD thd,
enum_var_type   
)
static

◆ fix_binlog_format_after_update()

static bool fix_binlog_format_after_update ( sys_var ,
THD thd,
enum_var_type  type 
)
static

◆ fix_binlog_stmt_cache_size()

static bool fix_binlog_stmt_cache_size ( sys_var ,
THD thd,
enum_var_type   
)
static

◆ fix_delay_key_write()

export bool fix_delay_key_write ( sys_var ,
THD ,
enum_var_type   
)

◆ fix_general_log_file()

static bool fix_general_log_file ( sys_var ,
THD ,
enum_var_type   
)
static

◆ fix_general_log_state()

static bool fix_general_log_state ( sys_var ,
THD thd,
enum_var_type   
)
static

◆ fix_host_cache_size()

static bool fix_host_cache_size ( sys_var ,
THD ,
enum_var_type   
)
static

◆ fix_log_error_services()

static bool fix_log_error_services ( sys_var self,
THD thd,
enum_var_type  type 
)
static

◆ fix_log_error_suppression_list()

static bool fix_log_error_suppression_list ( sys_var self,
THD thd,
enum_var_type  type 
)
static

◆ fix_log_output()

static bool fix_log_output ( sys_var ,
THD ,
enum_var_type   
)
static

◆ fix_low_prio_updates()

static bool fix_low_prio_updates ( sys_var ,
THD thd,
enum_var_type  type 
)
static

◆ fix_max_binlog_size()

static bool fix_max_binlog_size ( sys_var ,
THD ,
enum_var_type   
)
static

◆ fix_max_join_size()

static bool fix_max_join_size ( sys_var self,
THD thd,
enum_var_type  type 
)
static

◆ fix_max_relay_log_size()

static bool fix_max_relay_log_size ( sys_var ,
THD ,
enum_var_type   
)
static

◆ fix_net_read_timeout()

static bool fix_net_read_timeout ( sys_var self,
THD thd,
enum_var_type  type 
)
static

◆ fix_net_retry_count()

static bool fix_net_retry_count ( sys_var self,
THD thd,
enum_var_type  type 
)
static

◆ fix_net_write_timeout()

static bool fix_net_write_timeout ( sys_var self,
THD thd,
enum_var_type  type 
)
static

◆ fix_read_only()

static bool fix_read_only ( sys_var self,
THD thd,
enum_var_type   
)
static

◆ fix_server_id()

static bool fix_server_id ( sys_var ,
THD thd,
enum_var_type   
)
static

◆ fix_slave_net_timeout()

static bool fix_slave_net_timeout ( sys_var ,
THD thd,
enum_var_type   
)
static

◆ fix_slow_log_file()

static bool fix_slow_log_file ( sys_var ,
THD thd,
enum_var_type   
)
static

◆ fix_slow_log_state()

static bool fix_slow_log_state ( sys_var ,
THD thd,
enum_var_type   
)
static

◆ fix_sql_log_bin_after_update()

static bool fix_sql_log_bin_after_update ( sys_var ,
THD thd,
enum_var_type  type 
)
static

This function sets the session variable thd->variables.sql_log_bin to reflect changes to @session.sql_log_bin.

Parameters
thdCurrent thread
[in]typeThe type either session or global.
Returns
false.

◆ fix_sql_mode()

static bool fix_sql_mode ( sys_var self,
THD thd,
enum_var_type  type 
)
static

◆ fix_super_read_only()

static bool fix_super_read_only ( sys_var ,
THD thd,
enum_var_type  type 
)
static

◆ fix_table_cache_size()

static bool fix_table_cache_size ( sys_var ,
THD ,
enum_var_type   
)
static

◆ fix_thd_charset()

static bool fix_thd_charset ( sys_var ,
THD thd,
enum_var_type  type 
)
static

◆ fix_thd_mem_root()

static bool fix_thd_mem_root ( sys_var self,
THD thd,
enum_var_type  type 
)
static

◆ fix_trans_mem_root()

static bool fix_trans_mem_root ( sys_var self,
THD thd,
enum_var_type  type 
)
static

◆ fixup_enforce_gtid_consistency_command_line()

const char* fixup_enforce_gtid_consistency_command_line ( char *  value_arg)

◆ handle_offline_mode()

static bool handle_offline_mode ( sys_var ,
THD thd,
enum_var_type   
)
static

◆ have_ssl_func()

static SHOW_COMP_OPTION have_ssl_func ( THD thd)
static

◆ issue_deprecation_warnings_gtid_mode()

static void issue_deprecation_warnings_gtid_mode ( THD thd,
enum_gtid_mode  oldmode,
enum_gtid_mode  newmode 
)
static

This function shall issue a deprecation warning if the new gtid mode is set to GTID_MODE_ON and there is at least one replication channel with IGNORE_SERVER_IDS configured (i.e., not empty).

The caller must have acquired a lock on the channel_map object before calling this function.

The warning emitted is: ER_WARN_DEPRECATED_SYNTAX_NO_REPLACEMENT .

Parameters
thdThe current session thread context.
oldmodeThe old value of @global.gtid_mode.
newmodeThe new value for @global.gtid_mode.

◆ limit_parser_max_mem_size()

static bool limit_parser_max_mem_size ( sys_var ,
THD thd,
set_var var 
)
static

◆ master_info_repository_check()

static bool master_info_repository_check ( sys_var self,
THD thd,
set_var var 
)
static

◆ master_info_repository_update()

static bool master_info_repository_update ( sys_var ,
THD thd,
enum_var_type   
)
static

◆ modify_thread_cache_size()

static bool modify_thread_cache_size ( sys_var ,
THD ,
enum_var_type   
)
inlinestatic

Modify the thread size cache size.

◆ on_session_track_gtids_update()

static bool on_session_track_gtids_update ( sys_var ,
THD thd,
enum_var_type   
)
static

◆ optimizer_trace_update()

static bool optimizer_trace_update ( sys_var ,
THD thd,
enum_var_type   
)
static

Delete all old optimizer traces.

◆ partial_revokes_update()

static bool partial_revokes_update ( sys_var ,
THD ,
enum_var_type   
)
static

Sets the changed value to the corresponding atomic system variable.

◆ prevent_global_rbr_exec_mode_idempotent()

static bool prevent_global_rbr_exec_mode_idempotent ( sys_var self,
THD thd,
set_var var 
)
static

◆ read_error_count()

static ulonglong read_error_count ( THD thd)
static

◆ read_insert_id()

static ulonglong read_insert_id ( THD thd)
static

◆ read_last_insert_id()

static ulonglong read_last_insert_id ( THD thd)
static

◆ read_rand_seed()

static ulonglong read_rand_seed ( THD )
static

◆ read_timestamp()

static double read_timestamp ( THD thd)
static

◆ read_warning_count()

static ulonglong read_warning_count ( THD thd)
static

◆ relay_log_info_repository_check()

static bool relay_log_info_repository_check ( sys_var self,
THD thd,
set_var var 
)
static

◆ relay_log_info_repository_update()

static bool relay_log_info_repository_update ( sys_var ,
THD thd,
enum_var_type   
)
static

◆ repository_check()

static bool repository_check ( sys_var self,
THD thd,
set_var var,
SLAVE_THD_TYPE  thread_mask 
)
static

◆ session_readonly()

static bool session_readonly ( sys_var self,
THD ,
set_var var 
)
static

◆ sql_mode_quoted_string_representation()

export bool sql_mode_quoted_string_representation ( THD thd,
sql_mode_t  sql_mode,
LEX_STRING ls 
)

◆ sql_mode_string_representation()

export bool sql_mode_string_representation ( THD thd,
sql_mode_t  sql_mode,
LEX_STRING ls 
)

◆ Sys_persisted_globals_load()

static Sys_var_bool Sys_persisted_globals_load ( PERSISTED_GLOBALS_LOAD  ,
"When this option is  enabled,
config file mysqld-auto.cnf is read " "and applied to  server,
else this file is ignored even if present."  ,
READ_ONLY NON_PERSIST   GLOBAL_VARpersisted_globals_load,
CMD_LINE(OPT_ARG ,
DEFAULT(true ,
NO_MUTEX_GUARD  ,
NOT_IN_BINLOG  ,
ON_CHECK(0)  ,
ON_UPDATE(0)   
)
static

◆ sysvar_check_authid_string()

static bool sysvar_check_authid_string ( sys_var ,
THD thd,
set_var var 
)
static

◆ sysvar_update_mandatory_roles()

static bool sysvar_update_mandatory_roles ( sys_var ,
THD ,
enum_var_type   
)
static

◆ transaction_write_set_check()

static bool transaction_write_set_check ( sys_var self,
THD thd,
set_var var 
)
static

◆ update_binlog_transaction_dependency_tracking()

static bool update_binlog_transaction_dependency_tracking ( sys_var ,
THD ,
enum_var_type   
)
static

◆ update_buffer_size()

static bool update_buffer_size ( THD ,
KEY_CACHE key_cache,
ptrdiff_t  offset,
ulonglong  new_value 
)
static

◆ update_cached_long_query_time()

static bool update_cached_long_query_time ( sys_var ,
THD thd,
enum_var_type  type 
)
static

◆ update_deprecated()

static bool update_deprecated ( sys_var self,
THD thd,
enum_var_type   
)
static

◆ update_fips_mode()

static bool update_fips_mode ( sys_var ,
THD ,
enum_var_type   
)
static

◆ update_insert_id()

static bool update_insert_id ( THD thd,
set_var var 
)
static

◆ update_keycache_param()

static bool update_keycache_param ( THD ,
KEY_CACHE key_cache,
ptrdiff_t  offset,
ulonglong  new_value 
)
static

◆ update_last_insert_id()

static bool update_last_insert_id ( THD thd,
set_var var 
)
static

◆ update_log_error_verbosity()

static bool update_log_error_verbosity ( sys_var ,
THD ,
enum_var_type   
)
static

◆ update_log_throttle_queries_not_using_indexes()

static bool update_log_throttle_queries_not_using_indexes ( sys_var ,
THD thd,
enum_var_type   
)
static

◆ update_parser_max_mem_size()

export void update_parser_max_mem_size ( )

◆ update_rand_seed1()

static bool update_rand_seed1 ( THD thd,
set_var var 
)
static

◆ update_rand_seed2()

static bool update_rand_seed2 ( THD thd,
set_var var 
)
static

◆ update_session_track_schema()

static bool update_session_track_schema ( sys_var ,
THD thd,
enum_var_type   
)
static

◆ update_session_track_state_change()

static bool update_session_track_state_change ( sys_var ,
THD thd,
enum_var_type   
)
static

◆ update_session_track_tx_info()

static bool update_session_track_tx_info ( sys_var ,
THD thd,
enum_var_type   
)
static

◆ update_timestamp()

static bool update_timestamp ( THD thd,
set_var var 
)
static

◆ update_track_session_sys_vars()

static bool update_track_session_sys_vars ( sys_var ,
THD thd,
enum_var_type  type 
)
static

Variable Documentation

◆ Binlog_checksum_enum

Sys_var_enum_binlog_checksum Binlog_checksum_enum("binlog_checksum", "Type of BINLOG_CHECKSUM_ALG. Include checksum for " "log events in the binary log. Possible values are NONE and CRC32; " "default is CRC32.", GLOBAL_VAR(binlog_checksum_options), CMD_LINE(REQUIRED_ARG), binlog_checksum_type_names, DEFAULT(binary_log::BINLOG_CHECKSUM_ALG_CRC32), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_outside_trx))
static

◆ binlog_row_image_names

const char* binlog_row_image_names[]
static
Initial value:
= {"MINIMAL", "NOBLOB", "FULL",
#define NullS
Definition of the null string (a null pointer of type char *), used in some of our string handling co...
Definition: m_string.h:49

◆ binlog_row_metadata_names

const char* binlog_row_metadata_names[] = {"MINIMAL", "FULL", NullS}
static

◆ binlog_row_value_options_names

const char* binlog_row_value_options_names[] = {"PARTIAL_JSON", 0}

◆ Binlog_transaction_dependency_history_size

Sys_var_ulong Binlog_transaction_dependency_history_size("binlog_transaction_dependency_history_size", "Maximum number of rows to keep in the writeset history.", ->m_opt_max_history_size)
static

◆ Binlog_transaction_dependency_tracking

Sys_var_enum Binlog_transaction_dependency_tracking("binlog_transaction_dependency_tracking", "Selects the source of dependency information from which to " "assess which transactions can be executed in parallel by the " "slave's multi-threaded applier. " "Possible values are COMMIT_ORDER, WRITESET and WRITESET_SESSION.", GLOBAL_VAR(mysql_bin_log.m_dependency_tracker.m_opt_tracking_mode), CMD_LINE(REQUIRED_ARG), opt_binlog_transaction_dependency_tracking_names, DEFAULT(DEPENDENCY_TRACKING_COMMIT_ORDER), &PLock_slave_trans_dep_tracker, NOT_IN_BINLOG, ON_CHECK(check_binlog_transaction_dependency_tracking), ON_UPDATE(update_binlog_transaction_dependency_tracking))
static

◆ BLOCK_SIZE

Sys_var_ulong BLOCK_SIZE(1)

◆ bool_typelib

TYPELIB bool_typelib = {array_elements(bool_values) - 1, "", bool_values, 0}

◆ charset_system_default

CHARSET_INFO* charset_system_default = &my_charset_utf8_general_ci
static

◆ CMD_LINE

◆ completion_type_names

const char* completion_type_names[]
static
Initial value:
= {"NO_CHAIN", "CHAIN", "RELEASE",
0}

◆ concurrent_insert_names

const char* concurrent_insert_names[] = {"NEVER", "AUTO", "ALWAYS", 0}
static

◆ DEFAULT

Sys_var_ulong DEFAULT(25000)

◆ delay_key_write_names

const char* delay_key_write_names[] = {"OFF", "ON", "ALL", NullS}
static

◆ enforce_gtid_consistency_aliases

const Sys_var_multi_enum::ALIAS enforce_gtid_consistency_aliases[]
Initial value:
= {
{"OFF", 0}, {"ON", 1}, {"WARN", 2}, {"FALSE", 0}, {"TRUE", 1}, {NULL, 0}}
Sergei Dialog Client Authentication NULL
Definition: dialog.cc:352

◆ event_scheduler_names

const char* event_scheduler_names[] = {"OFF", "ON", "DISABLED", NullS}
static

◆ glob_hostname_ptr

char* glob_hostname_ptr
static

◆ group_replication_consistency_names

const char* group_replication_consistency_names[]
static
Initial value:
= {
"EVENTUAL", "BEFORE_ON_PRIMARY_FAILOVER", "BEFORE",
"AFTER", "BEFORE_AND_AFTER", NullS}
#define NullS
Definition of the null string (a null pointer of type char *), used in some of our string handling co...
Definition: m_string.h:49

◆ gtid_purged

Gtid_set* gtid_purged

◆ internal_tmp_mem_storage_engine_names

const char* internal_tmp_mem_storage_engine_names[]
Initial value:
= {"MEMORY", "TempTable",
0}

◆ license

char* license
static

◆ LOCK_default_password_lifetime

PolyLock_mutex Plock_default_password_lifetime & LOCK_default_password_lifetime
static

◆ LOCK_keyring_operations

PolyLock_mutex PLock_keyring_operations& LOCK_keyring_operations
static

This is a mutex used to protect global variable @keyring_operations.

◆ LOCK_mandatory_roles

PolyLock_mutex PLock_sys_mandatory_roles& LOCK_mandatory_roles
static

◆ LOCK_password_history

PolyLock_mutex plock_sys_password_history& LOCK_password_history
static

◆ LOCK_password_reuse_interval

PolyLock_mutex plock_sys_password_reuse_interval & LOCK_password_reuse_interval
static

◆ LOCK_prepared_stmt_count

PolyLock_mutex PLock_prepared_stmt_count& LOCK_prepared_stmt_count
static

◆ LOCK_slave_net_timeout

PolyLock_mutex PLock_slave_net_timeout& LOCK_slave_net_timeout
static

◆ LOCK_slave_trans_dep_tracker

PolyLock_mutex PLock_slave_trans_dep_tracker & LOCK_slave_trans_dep_tracker
static

◆ LOCK_sql_slave_skip_counter

PolyLock_mutex PLock_sql_slave_skip_counter & LOCK_sql_slave_skip_counter
static

◆ LOCK_sys_init_connect

PolyLock_rwlock PLock_sys_init_connect& LOCK_sys_init_connect
static

◆ LOCK_sys_init_slave

PolyLock_rwlock PLock_sys_init_slave& LOCK_sys_init_slave
static

◆ log_output_names

const char* log_output_names[] = {"NONE", "FILE", "TABLE", NULL}
static

◆ max_mem_sz

constexpr size_t max_mem_sz = std::numeric_limits<size_t>::max()

◆ Mts_parallel_type

Sys_var_enum Mts_parallel_type("slave_parallel_type", "Specifies if the slave will use database partitioning " "or information from master to parallelize transactions." "(Default: DATABASE).", PERSIST_AS_READONLY GLOBAL_VAR(mts_parallel_option), CMD_LINE(REQUIRED_ARG), mts_parallel_type_names, DEFAULT(MTS_PARALLEL_TYPE_DB_NAME), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_slave_stopped), ON_UPDATE(NULL))
static

◆ mts_parallel_type_names

const char* mts_parallel_type_names[] = {"DATABASE", "LOGICAL_CLOCK", 0}
static

◆ NOT_IN_BINLOG

Sys_var_ulong NOT_IN_BINLOG

◆ ON_CHECK

Sys_var_ulong ON_CHECK(NULL)

◆ ON_UPDATE

Sys_var_ulong ON_UPDATE(NULL))

◆ opt_binlog_transaction_dependency_tracking_names

const char* opt_binlog_transaction_dependency_tracking_names[]
static
Initial value:
= {
"COMMIT_ORDER", "WRITESET", "WRITESET_SESSION", NullS}
#define NullS
Definition of the null string (a null pointer of type char *), used in some of our string handling co...
Definition: m_string.h:49

◆ opt_mi_repository_id

ulong opt_mi_repository_id = INFO_REPOSITORY_TABLE

◆ opt_rli_repository_id

ulong opt_rli_repository_id = INFO_REPOSITORY_TABLE

◆ optimizer_switch_names

const char* optimizer_switch_names[]
static
Initial value:
= {
"index_merge",
"index_merge_union",
"index_merge_sort_union",
"index_merge_intersection",
"engine_condition_pushdown",
"index_condition_pushdown",
"mrr",
"mrr_cost_based",
"block_nested_loop",
"batched_key_access",
"materialization",
"semijoin",
"loosescan",
"firstmatch",
"duplicateweedout",
"subquery_materialization_cost_based",
"use_index_extensions",
"condition_fanout_filter",
"derived_merge",
"use_invisible_indexes",
"skip_scan",
"default",
#define NullS
Definition of the null string (a null pointer of type char *), used in some of our string handling co...
Definition: m_string.h:49
Note
BEWARE! These must have the same order as the #defines in sql_const.h!

◆ PLock_slave_trans_dep_tracker

Sys_var_ulong & PLock_slave_trans_dep_tracker

◆ rbr_exec_mode

Sys_var_enum rbr_exec_mode("rbr_exec_mode", "Modes for how row events should be executed. Legal values " "are STRICT (default) and IDEMPOTENT. In IDEMPOTENT mode, " "the server will not throw errors for operations that are idempotent. " "In STRICT mode, server will throw errors for the operations that " "cause a conflict.", SESSION_VAR(rbr_exec_mode_options), NO_CMD_LINE, rbr_exec_mode_names, DEFAULT(RBR_EXEC_MODE_STRICT), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(prevent_global_rbr_exec_mode_idempotent), ON_UPDATE(NULL))
static

◆ rbr_exec_mode_names

const char* rbr_exec_mode_names[] = {"STRICT", "IDEMPOTENT", 0}
static

◆ repository_names

const char* repository_names[]
static
Initial value:
= {"FILE", "TABLE",
"DUMMY",
0}

◆ resultset_metadata_names

const char* resultset_metadata_names[] = {"NONE", "FULL", NullS}
static

◆ server_version_comment_ptr

char* server_version_comment_ptr
static

◆ server_version_compile_machine_ptr

char* server_version_compile_machine_ptr
static

◆ server_version_compile_os_ptr

char* server_version_compile_os_ptr
static

◆ server_version_compile_zlib_ptr

const char* server_version_compile_zlib_ptr = ZLIB_VERSION
static

◆ server_version_ptr

char* server_version_ptr
static

◆ session_track_gtids_names

const char* session_track_gtids_names[]
static
Initial value:
= {"OFF", "OWN_GTID",
"ALL_GTIDS", NullS}
#define NullS
Definition of the null string (a null pointer of type char *), used in some of our string handling co...
Definition: m_string.h:49

◆ session_track_transaction_info_names

const char* session_track_transaction_info_names[]
static
Initial value:
= {
"OFF", "STATE", "CHARACTERISTICS", NullS}
#define NullS
Definition of the null string (a null pointer of type char *), used in some of our string handling co...
Definition: m_string.h:49

◆ Slave_exec_mode

Sys_var_enum Slave_exec_mode("slave_exec_mode", "Modes for how replication events should be executed. Legal values " "are STRICT (default) and IDEMPOTENT. In IDEMPOTENT mode, " "replication will not stop for operations that are idempotent. " "In STRICT mode, replication will stop on any unexpected difference " "between the master and the slave", GLOBAL_VAR(slave_exec_mode_options), CMD_LINE(REQUIRED_ARG), slave_exec_mode_names, DEFAULT(RBR_EXEC_MODE_STRICT))
static

◆ slave_exec_mode_names

const char* slave_exec_mode_names[] = {"STRICT", "IDEMPOTENT", 0}
static

◆ Slave_rows_search_algorithms

Sys_var_set Slave_rows_search_algorithms("slave_rows_search_algorithms", "Set of searching algorithms that the slave will use while " "searching for records from the storage engine to either " "updated or deleted them. Possible values are: INDEX_SCAN, " "TABLE_SCAN and HASH_SCAN. Any combination is allowed, and " "the slave will always pick the most suitable algorithm for " "any given scenario. " "(Default: INDEX_SCAN, HASH_SCAN).", GLOBAL_VAR(slave_rows_search_algorithms_options), CMD_LINE(REQUIRED_ARG), slave_rows_search_algorithms_names, DEFAULT(SLAVE_ROWS_INDEX_SCAN|SLAVE_ROWS_HASH_SCAN), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_not_null_not_empty), ON_UPDATE(NULL))
static

◆ slave_rows_search_algorithms_names

const char* slave_rows_search_algorithms_names[]
static
Initial value:
= {
"TABLE_SCAN", "INDEX_SCAN", "HASH_SCAN", 0}

◆ Slave_type_conversions

Sys_var_set Slave_type_conversions("slave_type_conversions", "Set of slave type conversions that are enabled. Legal values are:" " ALL_LOSSY to enable lossy conversions," " ALL_NON_LOSSY to enable non-lossy conversions," " ALL_UNSIGNED to treat all integer column type data to be unsigned " "values, and" " ALL_SIGNED to treat all integer column type data to be signed values." " Default treatment is ALL_SIGNED. If ALL_SIGNED and ALL_UNSIGNED both " "are" " specified, ALL_SIGNED will take higher priority than ALL_UNSIGNED." " If the variable is assigned the empty set, no conversions are" " allowed and it is expected that the types match exactly.", GLOBAL_VAR(slave_type_conversions_options), CMD_LINE(REQUIRED_ARG), slave_type_conversions_name, DEFAULT(0))
static

◆ slave_type_conversions_name

const char* slave_type_conversions_name[]
Initial value:
= {"ALL_LOSSY", "ALL_NON_LOSSY",
"ALL_UNSIGNED", "ALL_SIGNED", 0}

◆ sql_mode_names

const char* sql_mode_names[]
static

◆ ssl_fips_mode_names

const char* ssl_fips_mode_names[] = {"OFF", "ON", "STRICT", 0}
static

◆ Sys_admin_addr

Sys_var_charptr Sys_admin_addr("admin_address", "IP address to bind to for service connection. Address can be an IPv4" " address, IPv6 address, or host name. Wildcard values *, ::, 0.0.0.0" " are not allowed. Address value can have following optional network" " namespace separated by the delimiter / from the address value." " E.g., the following value 192.168.1.1/red specifies IP addresses to" " listen for incoming TCP connections that have to be placed into" " the namespace 'red'. Using of network namespace requires its support" " from underlying Operating System. Attempt to specify a network namespace" " for a platform that doesn't support it results in error during socket" " creation.", READ_ONLY NON_PERSIST GLOBAL_VAR(my_admin_bind_addr_str), CMD_LINE(REQUIRED_ARG), IN_FS_CHARSET, DEFAULT(0))
static

◆ Sys_admin_port

Sys_var_uint Sys_admin_port("admin_port", "Port number to use for service connection," " built-in default (" STRINGIFY_ARG(MYSQL_ADMIN_PORT) ")", READ_ONLY NON_PERSIST GLOBAL_VAR(mysqld_admin_port), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, 65535), DEFAULT(MYSQL_ADMIN_PORT), BLOCK_SIZE(1))
static

◆ Sys_always_activate_granted_roles

Sys_var_bool Sys_always_activate_granted_roles("activate_all_roles_on_login", "Automatically set all granted roles as active after the user has " "authenticated successfully.", GLOBAL_VAR(opt_always_activate_granted_roles), CMD_LINE(OPT_ARG), DEFAULT(false), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(0))
static

◆ Sys_auto_increment_increment

Sys_var_ulong Sys_auto_increment_increment("auto_increment_increment", "Auto-increment columns are incremented by this", HINT_UPDATEABLE SESSION_VAR(auto_increment_increment), CMD_LINE(OPT_ARG), VALID_RANGE(1, 65535), DEFAULT(1), BLOCK_SIZE(1), NO_MUTEX_GUARD, IN_BINLOG, ON_CHECK(check_session_admin))
static

◆ Sys_auto_increment_offset

Sys_var_ulong Sys_auto_increment_offset("auto_increment_offset", "Offset added to Auto-increment columns. Used when " "auto-increment-increment != 1", HINT_UPDATEABLE SESSION_VAR(auto_increment_offset), CMD_LINE(OPT_ARG), VALID_RANGE(1, 65535), DEFAULT(1), BLOCK_SIZE(1), NO_MUTEX_GUARD, IN_BINLOG, ON_CHECK(check_session_admin))
static

◆ Sys_auto_is_null

Sys_var_bit Sys_auto_is_null("sql_auto_is_null", "sql_auto_is_null", HINT_UPDATEABLE SESSION_VAR(option_bits), NO_CMD_LINE, OPTION_AUTO_IS_NULL, DEFAULT(false), NO_MUTEX_GUARD, IN_BINLOG)
static

◆ Sys_autocommit

Sys_var_bit Sys_autocommit("autocommit", "autocommit", SESSION_VAR(option_bits), NO_CMD_LINE, OPTION_AUTOCOMMIT, DEFAULT(true), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(fix_autocommit))
static

◆ Sys_autocommit_ptr

export sys_var* Sys_autocommit_ptr = &Sys_autocommit

◆ Sys_automatic_sp_privileges

Sys_var_bool Sys_automatic_sp_privileges("automatic_sp_privileges", "Creating and dropping stored procedures alters ACLs", GLOBAL_VAR(sp_automatic_privileges), CMD_LINE(OPT_ARG), DEFAULT(true))
static

◆ Sys_avoid_temporal_upgrade

Sys_var_bool Sys_avoid_temporal_upgrade("avoid_temporal_upgrade", "When this option is enabled, the pre-5.6.4 temporal types are " "not upgraded to the new format for ALTER TABLE requests " "ADD/CHANGE/MODIFY" " COLUMN, ADD INDEX or FORCE operation. " "This variable is deprecated and will be removed in a future release.", GLOBAL_VAR(avoid_temporal_upgrade), CMD_LINE(OPT_ARG, OPT_AVOID_TEMPORAL_UPGRADE), DEFAULT(false), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(0), DEPRECATED_VAR(""))
static

◆ Sys_back_log

Sys_var_ulong Sys_back_log("back_log", "The number of outstanding connection requests " "MySQL can have. This comes into play when the main MySQL thread " "gets very many connection requests in a very short time", READ_ONLY GLOBAL_VAR(back_log), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, 65535), DEFAULT(0), BLOCK_SIZE(1))
static

◆ Sys_basedir

Sys_var_charptr Sys_basedir("basedir", "Path to installation directory. All paths are " "usually resolved relative to this", READ_ONLY NON_PERSIST GLOBAL_VAR(mysql_home_ptr), CMD_LINE(REQUIRED_ARG, 'b'), IN_FS_CHARSET, DEFAULT(0))
static

◆ Sys_big_selects

Sys_var_bit Sys_big_selects("sql_big_selects", "sql_big_selects", HINT_UPDATEABLE SESSION_VAR(option_bits), NO_CMD_LINE, OPTION_BIG_SELECTS, DEFAULT(false))
static

◆ Sys_big_tables

Sys_var_bool Sys_big_tables("big_tables", "Allow big result sets by saving all " "temporary sets on file (Solves most 'table full' errors)", HINT_UPDATEABLE SESSION_VAR(big_tables), CMD_LINE(OPT_ARG), DEFAULT(false))
static

◆ Sys_binlog_cache_size

Sys_var_ulong Sys_binlog_cache_size("binlog_cache_size", "The size of the transactional cache for " "updates to transactional engines for the binary log. " "If you often use transactions containing many statements, " "you can increase this to get more performance", GLOBAL_VAR(binlog_cache_size), CMD_LINE(REQUIRED_ARG), VALID_RANGE(IO_SIZE, ULONG_MAX), DEFAULT(32768), BLOCK_SIZE(IO_SIZE), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(fix_binlog_cache_size))
static

◆ Sys_binlog_direct

Sys_var_bool Sys_binlog_direct("binlog_direct_non_transactional_updates", "Causes updates to non-transactional engines using statement format to " "be written directly to binary log. Before using this option make sure " "that there are no dependencies between transactional and " "non-transactional tables such as in the statement INSERT INTO t_myisam " "SELECT * FROM t_innodb; otherwise, slaves may diverge from the master.", SESSION_VAR(binlog_direct_non_trans_update), CMD_LINE(OPT_ARG), DEFAULT(false), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(binlog_direct_check))
static

◆ Sys_binlog_encryption

Sys_var_binlog_encryption Sys_binlog_encryption("binlog_encryption", "Enable/disable binary and relay logs encryption.", GLOBAL_VAR(rpl_encryption.get_enabled_var()), CMD_LINE(OPT_ARG), DEFAULT(false), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_binlog_encryption_admin))
static

◆ Sys_binlog_error_action

Sys_var_enum Sys_binlog_error_action("binlog_error_action", "When statements cannot be written to the binary log due to a fatal " "error, the server can either ignore the error and let the master " "continue, or abort.", GLOBAL_VAR(binlog_error_action), CMD_LINE(REQUIRED_ARG), binlog_error_action_list, DEFAULT(ABORT_SERVER))
static

◆ Sys_binlog_expire_logs_seconds

Sys_var_ulong Sys_binlog_expire_logs_seconds("binlog_expire_logs_seconds", "If non-zero, binary logs will be purged after binlog_expire_logs_seconds" " seconds; If both this option and expire_logs_days are set to non-zero" " values, this option takes priority. Purges happen at" " startup and at binary log rotation.", GLOBAL_VAR(binlog_expire_logs_seconds), CMD_LINE(REQUIRED_ARG, OPT_BINLOG_EXPIRE_LOGS_SECONDS), VALID_RANGE(0, 0xFFFFFFFF), DEFAULT(2592000), BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(check_expire_logs_seconds), ON_UPDATE(NULL))
static

◆ Sys_binlog_format

Sys_var_enum Sys_binlog_format("binlog_format", "What form of binary logging the master will " "use: either ROW for row-based binary logging, STATEMENT " "for statement-based binary logging, or MIXED. MIXED is statement-" "based binary logging except for those statements where only row-" "based is correct: those which involve user-defined functions (i.e. " "UDFs) or the UUID() function; for those, row-based binary logging is " "automatically used. If NDBCLUSTER is enabled and binlog-format is " "MIXED, the format switches to row-based and back implicitly per each " "query accessing an NDBCLUSTER table", SESSION_VAR(binlog_format), CMD_LINE(REQUIRED_ARG, OPT_BINLOG_FORMAT), binlog_format_names, DEFAULT(BINLOG_FORMAT_ROW), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(binlog_format_check), ON_UPDATE(fix_binlog_format_after_update))
static

◆ Sys_binlog_group_commit_sync_delay

Sys_var_long Sys_binlog_group_commit_sync_delay("binlog_group_commit_sync_delay", "The number of microseconds the server waits for the " "binary log group commit sync queue to fill before " "continuing. Default: 0. Min: 0. Max: 1000000.", GLOBAL_VAR(opt_binlog_group_commit_sync_delay), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, 1000000), DEFAULT(0), BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG)
static

◆ Sys_binlog_group_commit_sync_no_delay_count

Sys_var_ulong Sys_binlog_group_commit_sync_no_delay_count("binlog_group_commit_sync_no_delay_count", "If there are this many transactions in the commit sync " "queue and the server is waiting for more transactions " "to be enqueued (as set using --binlog-group-commit-sync-delay), " "the commit procedure resumes.", GLOBAL_VAR(opt_binlog_group_commit_sync_no_delay_count), CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, 100000), DEFAULT(0), BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG)
static

◆ Sys_binlog_gtid_simple_recovery

Sys_var_bool Sys_binlog_gtid_simple_recovery("binlog_gtid_simple_recovery", "If this option is enabled, the server does not open more than " "two binary logs when initializing GTID_PURGED and " "GTID_EXECUTED, either during server restart or when binary " "logs are being purged. Enabling this option is useful when " "the server has already generated many binary logs without " "GTID events (e.g., having GTID_MODE = OFF). Note: If this " "option is enabled, GLOBAL.GTID_EXECUTED and " "GLOBAL.GTID_PURGED may be initialized wrongly in two cases: " "(1) All binary logs were generated by MySQL 5.7.5 or older, " "and GTID_MODE was ON for some binary logs but OFF for the " "newest binary log. (2) The oldest existing binary log was " "generated by MySQL 5.7.5 or older, and SET GTID_PURGED was " "issued after the oldest binary log was generated. If a wrong " "set is computed in one of case (1) or case (2), it will " "remain wrong even if the server is later restarted with this " "option disabled.", READ_ONLY GLOBAL_VAR(binlog_gtid_simple_recovery), CMD_LINE(OPT_ARG), DEFAULT(true))
static

◆ Sys_binlog_index

Sys_var_charptr Sys_binlog_index("log_bin_index", "File that holds the names for last binary log files.", READ_ONLY NON_PERSIST GLOBAL_VAR(log_bin_index), NO_CMD_LINE, IN_FS_CHARSET, DEFAULT(0))
static

◆ Sys_binlog_max_flush_queue_time

Sys_var_int32 Sys_binlog_max_flush_queue_time("binlog_max_flush_queue_time", "The maximum time that the binary log group commit will keep reading" " transactions before it flush the transactions to the binary log (and" " optionally sync, depending on the value of sync_binlog).", GLOBAL_VAR(opt_binlog_max_flush_queue_time), CMD_LINE(REQUIRED_ARG, OPT_BINLOG_MAX_FLUSH_QUEUE_TIME), VALID_RANGE(0, 100000), DEFAULT(0), BLOCK_SIZE(1), NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(0), DEPRECATED_VAR(""))
static

◆ Sys_binlog_order_commits

Sys_var_bool Sys_binlog_order_commits("binlog_order_commits", "Issue internal commit calls in the same order as transactions are" " written to the binary log. Default is to order commits.", GLOBAL_VAR(opt_binlog_order_commits), CMD_LINE(OPT_ARG), DEFAULT(true))
static

◆ Sys_binlog_rotate_encryption_master_key_at_startup

Sys_var_bool Sys_binlog_rotate_encryption_master_key_at_startup("binlog_rotate_encryption_master_key_at_startup", "Force binlog encryption master key rotation at startup", READ_ONLY GLOBAL_VAR( rpl_encryption.get_master_key_rotation_at_startup_var()), CMD_LINE(OPT_ARG), DEFAULT(false), NO_MUTEX_GUARD, NOT_IN_BINLOG)
static