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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`
VARIABLE_NAMESESSION_VALUEGLOBAL_VALUEGLOBAL_VALUE_ORIGINDEFAULT_VALUEVARIABLE_SCOPEVARIABLE_TYPEVARIABLE_COMMENTNUMERIC_MIN_VALUENUMERIC_MAX_VALUENUMERIC_BLOCK_SIZEENUM_VALUE_LISTREAD_ONLYCOMMAND_LINE_ARGUMENT
HAVE_OPENSSL NULL NO COMPILE-TIME NULL GLOBAL VARCHAR Comparing have_openssl with have_ssl will indicate... NULL NULL NULL NULL YES NULL
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
SQL_MODE NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION COMPILE-TIME NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION 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
INNODB_LOG_ARCHIVE NULL OFF COMPILE-TIME OFF GLOBAL BOOLEAN Set to 1 if you want to have logs archived. NULL NULL NULL OFF,ON NO OPTIONAL
PERFORMANCE_SCHEMA_MAX_COND_CLASSES NULL 80 COMPILE-TIME 80 GLOBAL INT UNSIGNED Maximum number of condition instruments. 0 256 1 NULL YES REQUIRED
CONCURRENT_INSERT NULL AUTO COMPILE-TIME AUTO GLOBAL ENUM Use concurrent insert with MyISAM NULL NULL NULL NEVER,AUTO,ALWAYS NO OPTIONAL
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_BUFFER_POOL_SIZE NULL 16777216 CONFIG 134217728 GLOBAL BIGINT The size of the memory buffer InnoDB uses to cache... 5242880 9223372036854775807 1048576 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
MAX_HEAP_TABLE_SIZE 16777216 16777216 COMPILE-TIME 16777216 SESSION BIGINT UNSIGNED Don't allow creation of heap tables bigger than th... 16384 18446744073709551615 1024 NULL NO REQUIRED
INNODB_LOG_FILE_SIZE NULL 5242880 CONFIG 50331648 GLOBAL BIGINT Size of each log file in a log group. 1048576 9223372036854775807 1048576 NULL YES REQUIRED
INNODB_TRACK_CHANGED_PAGES NULL OFF COMPILE-TIME OFF GLOBAL BOOLEAN Track the redo log for changed pages and output a ... NULL NULL NULL OFF,ON YES NONE
MAX_SP_RECURSION_DEPTH 0 0 COMPILE-TIME 0 SESSION INT UNSIGNED Maximum stored procedure recursion depth 0 255 1 NULL 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
OPTIMIZER_PRUNE_LEVEL 1 1 COMPILE-TIME 1 SESSION INT UNSIGNED Controls the heuristic(s) applied during query opt... 0 1 1 NULL NO REQUIRED
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
VERSION NULL 10.1.38-MariaDB COMPILE-TIME NULL GLOBAL VARCHAR Server version number. It may also include a suffi... NULL NULL NULL NULL YES NULL
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
FLUSH_TIME NULL 0 COMPILE-TIME 0 GLOBAL INT UNSIGNED A dedicated thread is created to flush all tables ... 0 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
BINLOG_FORMAT STATEMENT STATEMENT COMPILE-TIME STATEMENT SESSION ENUM What form of binary logging the master will use: e... NULL NULL NULL MIXED,STATEMENT,ROW NO REQUIRED