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服务器: 127.0.0.1 »数据库: information_schema »视图: SYSTEM_VARIABLES
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SELECT * FROM `SYSTEM_VARIABLES`
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VARIABLE_NAMESESSION_VALUEGLOBAL_VALUEGLOBAL_VALUE_ORIGINDEFAULT_VALUEVARIABLE_SCOPEVARIABLE_TYPEVARIABLE_COMMENTNUMERIC_MIN_VALUENUMERIC_MAX_VALUENUMERIC_BLOCK_SIZEENUM_VALUE_LISTREAD_ONLYCOMMAND_LINE_ARGUMENT
INNODB_FORCE_RECOVERY NULL 0 COMPILE-TIME 0 GLOBAL INT UNSIGNED Helps to save your data in case the disk image of ... 0 6 0 NULL YES REQUIRED
PERFORMANCE_SCHEMA NULL OFF COMPILE-TIME OFF GLOBAL BOOLEAN Enable the performance schema. NULL NULL NULL OFF,ON YES OPTIONAL
SQL_MODE NO_ZERO_IN_DATE,NO_ZERO_DATE,NO_ENGINE_SUBSTITUTIO... NO_ZERO_IN_DATE,NO_ZERO_DATE,NO_ENGINE_SUBSTITUTIO... CONFIG STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_... SESSION SET Sets the sql mode NULL NULL NULL REAL_AS_FLOAT,PIPES_AS_CONCAT,ANSI_QUOTES,IGNORE_S... NO REQUIRED
PERFORMANCE_SCHEMA_EVENTS_WAITS_HISTORY_LONG_SIZE NULL -1 COMPILE-TIME -1 GLOBAL INT Number of rows in EVENTS_WAITS_HISTORY_LONG. Use 0... -1 1048576 1 NULL YES REQUIRED
BINLOG_ROW_IMAGE FULL FULL COMPILE-TIME FULL SESSION ENUM Controls whether rows should be logged in 'FULL', ... NULL NULL NULL MINIMAL,NOBLOB,FULL NO REQUIRED
PERFORMANCE_SCHEMA_MAX_COND_CLASSES NULL 80 COMPILE-TIME 80 GLOBAL INT UNSIGNED Maximum number of condition instruments. 0 256 1 NULL YES REQUIRED
INSERT_ID 0 NULL COMPILE-TIME 0 SESSION ONLY BIGINT UNSIGNED The value to be used by the following INSERT or AL... 0 18446744073709551615 1 NULL NO NULL
PERFORMANCE_SCHEMA_MAX_COND_INSTANCES NULL -1 COMPILE-TIME -1 GLOBAL INT Maximum number of instrumented condition objects. ... -1 1048576 1 NULL YES REQUIRED
INNODB_FT_CACHE_SIZE NULL 8000000 COMPILE-TIME 8000000 GLOBAL INT UNSIGNED InnoDB Fulltext search cache size in bytes 1600000 80000000 0 NULL YES REQUIRED
PERFORMANCE_SCHEMA_MAX_RWLOCK_CLASSES NULL 40 COMPILE-TIME 40 GLOBAL INT UNSIGNED Maximum number of rwlock instruments. 0 256 1 NULL YES REQUIRED
INNODB_FLUSH_LOG_AT_TIMEOUT NULL 1 COMPILE-TIME 1 GLOBAL INT UNSIGNED Write and flush logs every (n) second. 0 2700 0 NULL NO OPTIONAL
LOG_BIN_COMPRESS NULL OFF COMPILE-TIME OFF GLOBAL BOOLEAN Whether the binary log can be compressed NULL NULL NULL OFF,ON NO OPTIONAL
INNODB_ENCRYPT_TEMPORARY_TABLES NULL OFF COMPILE-TIME OFF GLOBAL BOOLEAN Enrypt the temporary table data. NULL NULL NULL OFF,ON YES OPTIONAL
MAX_CONNECT_ERRORS NULL 100 COMPILE-TIME 100 GLOBAL INT UNSIGNED If there is more than this number of interrupted c... 1 4294967295 1 NULL NO REQUIRED
QUERY_CACHE_STRIP_COMMENTS OFF OFF COMPILE-TIME OFF SESSION BOOLEAN Strip all comments from a query before storing it ... NULL NULL NULL OFF,ON NO OPTIONAL
PERFORMANCE_SCHEMA_MAX_MUTEX_INSTANCES NULL -1 COMPILE-TIME -1 GLOBAL INT Maximum number of instrumented MUTEX objects. Use ... -1 104857600 1 NULL YES REQUIRED
EXTERNAL_USER NULL COMPILE-TIME NULL SESSION ONLY VARCHAR The external user account used when logging in NULL NULL NULL NULL YES NULL
PERFORMANCE_SCHEMA_MAX_RWLOCK_INSTANCES NULL -1 COMPILE-TIME -1 GLOBAL INT Maximum number of instrumented RWLOCK objects. Use... -1 104857600 1 NULL YES REQUIRED
DEBUG_NO_THREAD_ALARM NULL OFF COMPILE-TIME OFF GLOBAL BOOLEAN Disable system thread alarm calls. Disabling it ma... NULL NULL NULL OFF,ON YES OPTIONAL
PERFORMANCE_SCHEMA_MAX_MUTEX_CLASSES NULL 200 COMPILE-TIME 200 GLOBAL INT UNSIGNED Maximum number of mutex instruments. 0 256 1 NULL YES REQUIRED
INNODB_STATS_TRANSIENT_SAMPLE_PAGES NULL 8 COMPILE-TIME 8 GLOBAL BIGINT UNSIGNED The number of leaf index pages to sample when calc... 1 18446744073709551615 0 NULL NO REQUIRED
NET_WRITE_TIMEOUT 60 60 COMPILE-TIME 60 SESSION INT UNSIGNED Number of seconds to wait for a block to be writte... 1 31536000 1 NULL NO REQUIRED
SLOW_LAUNCH_TIME NULL 2 COMPILE-TIME 2 GLOBAL INT UNSIGNED If creating the thread takes longer than this valu... 0 31536000 1 NULL NO REQUIRED
PERFORMANCE_SCHEMA_ACCOUNTS_SIZE NULL -1 COMPILE-TIME -1 GLOBAL INT Maximum number of instrumented user@host accounts.... -1 1048576 1 NULL YES REQUIRED
SLAVE_EXEC_MODE NULL STRICT COMPILE-TIME STRICT GLOBAL ENUM How replication events should be executed. Legal v... NULL NULL NULL STRICT,IDEMPOTENT NO REQUIRED
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