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SELECT * FROM `SYSTEM_VARIABLES`

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VARIABLE_NAME	SESSION_VALUE	GLOBAL_VALUE	GLOBAL_VALUE_ORIGIN	DEFAULT_VALUE	VARIABLE_SCOPE	VARIABLE_TYPE	VARIABLE_COMMENT	NUMERIC_MIN_VALUE	NUMERIC_MAX_VALUE	NUMERIC_BLOCK_SIZE	ENUM_VALUE_LIST	READ_ONLY	COMMAND_LINE_ARGUMENT
COLUMN_COMPRESSION_THRESHOLD	100	100	COMPILE-TIME	100	SESSION	INT UNSIGNED	Minimum column data length eligible for compressio...	0	4294967295	1	NULL	NO	REQUIRED
PERFORMANCE_SCHEMA	NULL	OFF	COMPILE-TIME	OFF	GLOBAL	BOOLEAN	Enable the performance schema.	NULL	NULL	NULL	OFF,ON	YES	OPTIONAL
SQL_MODE	STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_...	STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_...	COMPILE-TIME	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	BIGINT	Number of rows in EVENTS_WAITS_HISTORY_LONG. Use 0...	-1	1048576	1	NULL	YES	REQUIRED
ARIA_PAGECACHE_DIVISION_LIMIT	NULL	100	COMPILE-TIME	100	GLOBAL	BIGINT UNSIGNED	The minimum percentage of warm blocks in key cache	1	100	1	NULL	NO	REQUIRED
PERFORMANCE_SCHEMA_MAX_COND_CLASSES	NULL	90	COMPILE-TIME	90	GLOBAL	BIGINT UNSIGNED	Maximum number of condition instruments.	0	256	1	NULL	YES	REQUIRED
BINLOG_CACHE_SIZE	NULL	32768	COMPILE-TIME	32768	GLOBAL	BIGINT UNSIGNED	The size of the transactional cache for updates to...	4096	18446744073709551615	4096	NULL	NO	REQUIRED
PERFORMANCE_SCHEMA_MAX_COND_INSTANCES	NULL	-1	COMPILE-TIME	-1	GLOBAL	BIGINT	Maximum number of instrumented condition objects. ...	-1	1048576	1	NULL	YES	REQUIRED
INNODB_DEFRAGMENT	NULL	OFF	COMPILE-TIME	OFF	GLOBAL	BOOLEAN	Enable/disable InnoDB defragmentation (default FAL...	NULL	NULL	NULL	OFF,ON	NO	REQUIRED
PERFORMANCE_SCHEMA_MAX_RWLOCK_CLASSES	NULL	40	COMPILE-TIME	40	GLOBAL	BIGINT 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_SORT_LENGTH	1024	1024	COMPILE-TIME	1024	SESSION	BIGINT UNSIGNED	The number of bytes to use when sorting BLOB or TE...	64	8388608	1	NULL	NO	REQUIRED
INNODB_ENCRYPT_TEMPORARY_TABLES	NULL	OFF	COMPILE-TIME	OFF	GLOBAL	BOOLEAN	Enrypt the temporary table data.	NULL	NULL	NULL	OFF,ON	YES	OPTIONAL
COLUMN_COMPRESSION_ZLIB_LEVEL	6	6	COMPILE-TIME	6	SESSION	INT UNSIGNED	zlib compression level (1 gives best speed, 9 give...	0	9	1	NULL	NO	REQUIRED
PERFORMANCE_SCHEMA_HOSTS_SIZE	NULL	-1	COMPILE-TIME	-1	GLOBAL	BIGINT	Maximum number of instrumented hosts. Use 0 to dis...	-1	1048576	1	NULL	YES	REQUIRED
PERFORMANCE_SCHEMA_MAX_MUTEX_INSTANCES	NULL	-1	COMPILE-TIME	-1	GLOBAL	BIGINT	Maximum number of instrumented MUTEX objects. Use ...	-1	104857600	1	NULL	YES	REQUIRED
MAX_INSERT_DELAYED_THREADS	20	20	COMPILE-TIME	20	SESSION	BIGINT UNSIGNED	Don't start more than this number of threads to ha...	0	16384	1	NULL	NO	NULL
PERFORMANCE_SCHEMA_MAX_RWLOCK_INSTANCES	NULL	-1	COMPILE-TIME	-1	GLOBAL	BIGINT	Maximum number of instrumented RWLOCK objects. Use...	-1	104857600	1	NULL	YES	REQUIRED
WSREP_TRX_FRAGMENT_UNIT	bytes	bytes	COMPILE-TIME	bytes	SESSION	ENUM	Unit for streaming replication transaction fragmen...	NULL	NULL	NULL	bytes,rows,statements	NO	REQUIRED
PERFORMANCE_SCHEMA_MAX_MUTEX_CLASSES	NULL	200	COMPILE-TIME	200	GLOBAL	BIGINT 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	BIGINT 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	BIGINT 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	BIGINT	Maximum number of instrumented user@host accounts....	-1	1048576	1	NULL	YES	REQUIRED
HAVE_RTREE_KEYS	NULL	YES	COMPILE-TIME	NULL	GLOBAL	VARCHAR	If RTREE indexes (used for spatial indexes) are av...	NULL	NULL	NULL	NULL	YES	NULL

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