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18985d8471
Statements that intend to modify data have to acquire protection
against ongoing backup. Prior to backup locks, protection against
FTWRL was acquired in form of 2 shared metadata locks of GLOBAL
(global read lock) and COMMIT namespaces. These two namespaces
were separate entities, they didn't share data structures and
locking primitives. And thus they were separate contention
points.
With backup locks, introduced by 7a9dfdd, these namespaces were
combined into a single BACKUP namespace. It became a single
contention point, which doubled load on BACKUP namespace data
structures and locking primitives compared to GLOBAL and COMMIT
namespaces. In other words system throughput has halved.
MDL fast lanes solve this problem by allowing multiple contention
points for single MDL_lock. Fast lane is scalable multi-instance
registry for leightweight locks. Internally it is just a list of
granted tickets, close counter and a mutex.
Number of fast lanes (or contention points) is defined by the
metadata_locks_instances system variable. Value of 1 disables fast
lanes and lock requests are served by conventional MDL_lock data
structures.
Since fast lanes allow arbitrary number of contention points, they
outperform pre-backup locks GLOBAL and COMMIT.
Fast lanes are enabled only for BACKUP namespace. Support for other
namespaces is to be implemented separately.
Lock types are divided in 2 categories: lightweight and heavyweight.
Lightweight lock types represent DML: MDL_BACKUP_DML,
MDL_BACKUP_TRANS_DML, MDL_BACKUP_SYS_DML, MDL_BACKUP_DDL,
MDL_BACKUP_ALTER_COPY, MDL_BACKUP_COMMIT. They are fully compatible
with each other. Normally served by corresponding fast lane, which is
determined by thread_id % metadata_locks_instances.
Heavyweight lock types represent ongoing backup: MDL_BACKUP_START,
MDL_BACKUP_FLUSH, MDL_BACKUP_WAIT_FLUSH, MDL_BACKUP_WAIT_DDL,
MDL_BACKUP_WAIT_COMMIT, MDL_BACKUP_FTWRL1, MDL_BACKUP_FTWRL2,
MDL_BACKUP_BLOCK_DDL. These locks are always served by conventional
MDL_lock data structures. Whenever such lock is requested, fast
lanes are closed and all tickets registered in fast lanes are
moved to conventional MDL_lock data structures. Until such locks
are released or aborted, lightweight lock requests are served by
conventional MDL_lock data structures.
Strictly speaking moving tickets from fast lanes to conventional
MDL_lock data structures is not required. But it allows to reduce
complexity and keep intact methods like: MDL_lock::visit_subgraph(),
MDL_lock::notify_conflicting_locks(), MDL_lock::reschedule_waiters(),
MDL_lock::can_grant_lock().
It is not even required to register tickets in fast lanes. They
can be implemented basing on an atomic variable that holds two
counters: granted lightweight locks and granted/waiting heavyweight
locks. Similarly to MySQL solution, which roughly speaking has
"single atomic fast lane". However it appears to be it won't bring
any better performance, while code complexity is going to be much
higher.
4299 lines
148 KiB
Text
4299 lines
148 KiB
Text
set time_zone='+00:00';
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set timestamp=unix_timestamp('2014-09-01 13:40:23');
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set pseudo_thread_id=10;
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set sql_mode=ansi_quotes;
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set global div_precision_increment=5;
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select VARIABLE_NAME,VARIABLE_SCOPE,VARIABLE_TYPE,VARIABLE_COMMENT,NUMERIC_MIN_VALUE,NUMERIC_MAX_VALUE,NUMERIC_BLOCK_SIZE,ENUM_VALUE_LIST,READ_ONLY,COMMAND_LINE_ARGUMENT
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from information_schema.system_variables
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where variable_name not like 'debug%' and
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variable_name not like 'wsrep%' and
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variable_name not like 's3%' and
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variable_name not in (
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'log_tc_size','have_sanitizer','timestamp'
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)
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order by variable_name;
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VARIABLE_NAME ALLOW_SUSPICIOUS_UDFS
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VARIABLE_SCOPE GLOBAL
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VARIABLE_TYPE BOOLEAN
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VARIABLE_COMMENT Allows use of user-defined functions (UDFs) consisting of only one symbol xxx() without corresponding xxx_init() or xxx_deinit(). That also means that one can load any function from any library, for example exit() from libc.so
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NUMERIC_MIN_VALUE NULL
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NUMERIC_MAX_VALUE NULL
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|
NUMERIC_BLOCK_SIZE NULL
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ENUM_VALUE_LIST OFF,ON
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READ_ONLY YES
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COMMAND_LINE_ARGUMENT OPTIONAL
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VARIABLE_NAME ALTER_ALGORITHM
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VARIABLE_SCOPE SESSION
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VARIABLE_TYPE ENUM
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VARIABLE_COMMENT Unused
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NUMERIC_MIN_VALUE NULL
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NUMERIC_MAX_VALUE NULL
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NUMERIC_BLOCK_SIZE NULL
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ENUM_VALUE_LIST DEFAULT,COPY,INPLACE,NOCOPY,INSTANT
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READ_ONLY NO
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COMMAND_LINE_ARGUMENT OPTIONAL
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VARIABLE_NAME ANALYZE_MAX_LENGTH
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VARIABLE_SCOPE SESSION
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VARIABLE_TYPE INT UNSIGNED
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VARIABLE_COMMENT Fields which length in bytes more than this are skipped by ANALYZE TABLE PERSISTENT unless explicitly listed in the FOR COLUMNS () clause
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NUMERIC_MIN_VALUE 32
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NUMERIC_MAX_VALUE 4294967295
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NUMERIC_BLOCK_SIZE 1
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ENUM_VALUE_LIST NULL
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READ_ONLY NO
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COMMAND_LINE_ARGUMENT REQUIRED
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VARIABLE_NAME ANALYZE_SAMPLE_PERCENTAGE
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VARIABLE_SCOPE SESSION
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VARIABLE_TYPE DOUBLE
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VARIABLE_COMMENT Percentage of rows from the table ANALYZE TABLE will sample to collect table statistics. Set to 0 to let MariaDB decide what percentage of rows to sample
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NUMERIC_MIN_VALUE 0
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NUMERIC_MAX_VALUE 100
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NUMERIC_BLOCK_SIZE NULL
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ENUM_VALUE_LIST NULL
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READ_ONLY NO
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COMMAND_LINE_ARGUMENT REQUIRED
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VARIABLE_NAME ARIA_BLOCK_SIZE
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VARIABLE_SCOPE GLOBAL
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VARIABLE_TYPE INT UNSIGNED
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VARIABLE_COMMENT Block size to be used for Aria index pages
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NUMERIC_MIN_VALUE 4096
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NUMERIC_MAX_VALUE 32768
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NUMERIC_BLOCK_SIZE 1024
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ENUM_VALUE_LIST NULL
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READ_ONLY YES
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COMMAND_LINE_ARGUMENT REQUIRED
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VARIABLE_NAME ARIA_CHECKPOINT_INTERVAL
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VARIABLE_SCOPE GLOBAL
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VARIABLE_TYPE INT UNSIGNED
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VARIABLE_COMMENT Interval between tries to do an automatic checkpoints. In seconds; 0 means 'no automatic checkpoints' which makes sense only for testing
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NUMERIC_MIN_VALUE 0
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NUMERIC_MAX_VALUE 4294967295
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NUMERIC_BLOCK_SIZE 1
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ENUM_VALUE_LIST NULL
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READ_ONLY NO
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COMMAND_LINE_ARGUMENT REQUIRED
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VARIABLE_NAME ARIA_CHECKPOINT_LOG_ACTIVITY
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VARIABLE_SCOPE GLOBAL
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VARIABLE_TYPE INT UNSIGNED
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VARIABLE_COMMENT Number of bytes that the transaction log has to grow between checkpoints before a new checkpoint is written to the log
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NUMERIC_MIN_VALUE 0
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NUMERIC_MAX_VALUE 4294967295
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NUMERIC_BLOCK_SIZE 1
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ENUM_VALUE_LIST NULL
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READ_ONLY NO
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COMMAND_LINE_ARGUMENT REQUIRED
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VARIABLE_NAME ARIA_ENCRYPT_TABLES
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VARIABLE_SCOPE GLOBAL
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VARIABLE_TYPE BOOLEAN
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VARIABLE_COMMENT Encrypt tables (only for tables with ROW_FORMAT=PAGE (default) and not FIXED/DYNAMIC)
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NUMERIC_MIN_VALUE NULL
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NUMERIC_MAX_VALUE NULL
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NUMERIC_BLOCK_SIZE NULL
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ENUM_VALUE_LIST OFF,ON
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READ_ONLY NO
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COMMAND_LINE_ARGUMENT OPTIONAL
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VARIABLE_NAME ARIA_FORCE_START_AFTER_RECOVERY_FAILURES
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VARIABLE_SCOPE GLOBAL
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VARIABLE_TYPE INT UNSIGNED
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VARIABLE_COMMENT Number of consecutive log recovery failures after which logs will be automatically deleted to cure the problem; 0 (the default) disables the feature
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NUMERIC_MIN_VALUE 0
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NUMERIC_MAX_VALUE 255
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NUMERIC_BLOCK_SIZE 1
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ENUM_VALUE_LIST NULL
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READ_ONLY YES
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COMMAND_LINE_ARGUMENT REQUIRED
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VARIABLE_NAME ARIA_GROUP_COMMIT
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VARIABLE_SCOPE GLOBAL
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VARIABLE_TYPE ENUM
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VARIABLE_COMMENT Specifies Aria group commit mode. Possible values are "none" (no group commit), "hard" (with waiting to actual commit), "soft" (no wait for commit (DANGEROUS!!!))
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NUMERIC_MIN_VALUE NULL
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NUMERIC_MAX_VALUE NULL
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NUMERIC_BLOCK_SIZE NULL
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ENUM_VALUE_LIST none,hard,soft
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READ_ONLY NO
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COMMAND_LINE_ARGUMENT REQUIRED
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VARIABLE_NAME ARIA_GROUP_COMMIT_INTERVAL
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VARIABLE_SCOPE GLOBAL
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VARIABLE_TYPE BIGINT UNSIGNED
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VARIABLE_COMMENT Interval between commits in microseconds (1/1000000 sec). 0 stands for no waiting for other threads to come and do a commit in "hard" mode and no sync()/commit at all in "soft" mode. Option has only an effect if aria_group_commit is used
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NUMERIC_MIN_VALUE 0
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NUMERIC_MAX_VALUE 4294967295
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NUMERIC_BLOCK_SIZE 1
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ENUM_VALUE_LIST NULL
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READ_ONLY NO
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COMMAND_LINE_ARGUMENT REQUIRED
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VARIABLE_NAME ARIA_LOG_DIR_PATH
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VARIABLE_SCOPE GLOBAL
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VARIABLE_TYPE VARCHAR
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VARIABLE_COMMENT Path to the directory where to store transactional log
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NUMERIC_MIN_VALUE NULL
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NUMERIC_MAX_VALUE NULL
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NUMERIC_BLOCK_SIZE NULL
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ENUM_VALUE_LIST NULL
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READ_ONLY YES
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COMMAND_LINE_ARGUMENT REQUIRED
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VARIABLE_NAME ARIA_LOG_FILE_SIZE
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VARIABLE_SCOPE GLOBAL
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VARIABLE_TYPE BIGINT UNSIGNED
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VARIABLE_COMMENT Limit for transaction log size
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NUMERIC_MIN_VALUE 8388608
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NUMERIC_MAX_VALUE 4294967295
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NUMERIC_BLOCK_SIZE 8192
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ENUM_VALUE_LIST NULL
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READ_ONLY NO
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COMMAND_LINE_ARGUMENT REQUIRED
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VARIABLE_NAME ARIA_LOG_PURGE_TYPE
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VARIABLE_SCOPE GLOBAL
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VARIABLE_TYPE ENUM
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VARIABLE_COMMENT Specifies how Aria transactional log will be purged
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NUMERIC_MIN_VALUE NULL
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NUMERIC_MAX_VALUE NULL
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NUMERIC_BLOCK_SIZE NULL
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ENUM_VALUE_LIST immediate,external,at_flush
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READ_ONLY NO
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COMMAND_LINE_ARGUMENT REQUIRED
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VARIABLE_NAME ARIA_MAX_SORT_FILE_SIZE
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VARIABLE_SCOPE GLOBAL
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VARIABLE_TYPE BIGINT UNSIGNED
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VARIABLE_COMMENT Don't use the fast sort index method to created index if the temporary file would get bigger than this
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NUMERIC_MIN_VALUE 0
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NUMERIC_MAX_VALUE 9223372036854775807
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NUMERIC_BLOCK_SIZE 1048576
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ENUM_VALUE_LIST NULL
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READ_ONLY NO
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COMMAND_LINE_ARGUMENT REQUIRED
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VARIABLE_NAME ARIA_PAGECACHE_AGE_THRESHOLD
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VARIABLE_SCOPE GLOBAL
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VARIABLE_TYPE BIGINT UNSIGNED
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VARIABLE_COMMENT 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 the page cache
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NUMERIC_MIN_VALUE 100
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NUMERIC_MAX_VALUE 18446744073709551615
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NUMERIC_BLOCK_SIZE 100
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ENUM_VALUE_LIST NULL
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READ_ONLY NO
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COMMAND_LINE_ARGUMENT REQUIRED
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VARIABLE_NAME ARIA_PAGECACHE_BUFFER_SIZE
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VARIABLE_SCOPE GLOBAL
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VARIABLE_TYPE BIGINT UNSIGNED
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VARIABLE_COMMENT The size of the buffer used for index blocks for Aria tables. Increase this to get better index handling (for all reads and multiple writes) to as much as you can afford
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NUMERIC_MIN_VALUE 131072
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NUMERIC_MAX_VALUE 18446744073709551615
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NUMERIC_BLOCK_SIZE 1
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ENUM_VALUE_LIST NULL
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READ_ONLY YES
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COMMAND_LINE_ARGUMENT REQUIRED
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VARIABLE_NAME ARIA_PAGECACHE_DIVISION_LIMIT
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VARIABLE_SCOPE GLOBAL
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VARIABLE_TYPE INT UNSIGNED
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VARIABLE_COMMENT The minimum percentage of warm blocks in key cache
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NUMERIC_MIN_VALUE 1
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NUMERIC_MAX_VALUE 100
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NUMERIC_BLOCK_SIZE 1
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ENUM_VALUE_LIST NULL
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READ_ONLY NO
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COMMAND_LINE_ARGUMENT REQUIRED
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VARIABLE_NAME ARIA_PAGECACHE_FILE_HASH_SIZE
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VARIABLE_SCOPE GLOBAL
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VARIABLE_TYPE INT UNSIGNED
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VARIABLE_COMMENT Number of hash buckets for open and changed files. If you have a lot of Aria files open you should increase this for faster flush of changes. A good value is probably 1/10 of number of possible open Aria files
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NUMERIC_MIN_VALUE 128
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NUMERIC_MAX_VALUE 16384
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NUMERIC_BLOCK_SIZE 1
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ENUM_VALUE_LIST NULL
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READ_ONLY YES
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COMMAND_LINE_ARGUMENT REQUIRED
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VARIABLE_NAME ARIA_PAGECACHE_SEGMENTS
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VARIABLE_SCOPE GLOBAL
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VARIABLE_TYPE INT UNSIGNED
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VARIABLE_COMMENT The number of segments in the page_cache. Each file is put in their own segments of size pagecache_buffer_size / segments. Having many segments improves parallel performance
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NUMERIC_MIN_VALUE 1
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NUMERIC_MAX_VALUE 128
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NUMERIC_BLOCK_SIZE 1
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ENUM_VALUE_LIST NULL
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READ_ONLY YES
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COMMAND_LINE_ARGUMENT REQUIRED
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VARIABLE_NAME ARIA_PAGE_CHECKSUM
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VARIABLE_SCOPE GLOBAL
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VARIABLE_TYPE BOOLEAN
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VARIABLE_COMMENT Maintain page checksums (can be overridden per table with PAGE_CHECKSUM clause in CREATE TABLE)
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NUMERIC_MIN_VALUE NULL
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NUMERIC_MAX_VALUE NULL
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NUMERIC_BLOCK_SIZE NULL
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ENUM_VALUE_LIST OFF,ON
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READ_ONLY NO
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COMMAND_LINE_ARGUMENT REQUIRED
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VARIABLE_NAME ARIA_RECOVER_OPTIONS
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VARIABLE_SCOPE GLOBAL
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VARIABLE_TYPE SET
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VARIABLE_COMMENT Specifies how corrupted tables should be automatically repaired
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NUMERIC_MIN_VALUE NULL
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NUMERIC_MAX_VALUE NULL
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NUMERIC_BLOCK_SIZE NULL
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ENUM_VALUE_LIST NORMAL,BACKUP,FORCE,QUICK,OFF
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READ_ONLY NO
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COMMAND_LINE_ARGUMENT OPTIONAL
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VARIABLE_NAME ARIA_REPAIR_THREADS
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VARIABLE_SCOPE SESSION
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VARIABLE_TYPE INT UNSIGNED
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VARIABLE_COMMENT Number of threads to use when repairing Aria tables. The value of 1 disables parallel repair
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NUMERIC_MIN_VALUE 1
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NUMERIC_MAX_VALUE 128
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NUMERIC_BLOCK_SIZE 1
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ENUM_VALUE_LIST NULL
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READ_ONLY NO
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COMMAND_LINE_ARGUMENT REQUIRED
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VARIABLE_NAME ARIA_SORT_BUFFER_SIZE
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VARIABLE_SCOPE SESSION
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VARIABLE_TYPE BIGINT UNSIGNED
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VARIABLE_COMMENT The buffer that is allocated when sorting the index when doing a REPAIR or when creating indexes with CREATE INDEX or ALTER TABLE
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NUMERIC_MIN_VALUE 16352
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NUMERIC_MAX_VALUE 1152921504606846975
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NUMERIC_BLOCK_SIZE 1
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ENUM_VALUE_LIST NULL
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READ_ONLY NO
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COMMAND_LINE_ARGUMENT REQUIRED
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VARIABLE_NAME ARIA_STATS_METHOD
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VARIABLE_SCOPE SESSION
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VARIABLE_TYPE ENUM
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VARIABLE_COMMENT Specifies how Aria index statistics collection code should treat NULLs
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NUMERIC_MIN_VALUE NULL
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|
NUMERIC_MAX_VALUE NULL
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|
NUMERIC_BLOCK_SIZE NULL
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ENUM_VALUE_LIST nulls_unequal,nulls_equal,nulls_ignored
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READ_ONLY NO
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COMMAND_LINE_ARGUMENT REQUIRED
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VARIABLE_NAME ARIA_SYNC_LOG_DIR
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VARIABLE_SCOPE GLOBAL
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VARIABLE_TYPE ENUM
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VARIABLE_COMMENT Controls syncing directory after log file growth and new file creation
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NUMERIC_MIN_VALUE NULL
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NUMERIC_MAX_VALUE NULL
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NUMERIC_BLOCK_SIZE NULL
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ENUM_VALUE_LIST NEVER,NEWFILE,ALWAYS
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READ_ONLY NO
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COMMAND_LINE_ARGUMENT REQUIRED
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VARIABLE_NAME ARIA_USED_FOR_TEMP_TABLES
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VARIABLE_SCOPE GLOBAL
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VARIABLE_TYPE BOOLEAN
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VARIABLE_COMMENT Whether temporary tables should be MyISAM or Aria
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NUMERIC_MIN_VALUE NULL
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NUMERIC_MAX_VALUE NULL
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NUMERIC_BLOCK_SIZE NULL
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ENUM_VALUE_LIST OFF,ON
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READ_ONLY YES
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COMMAND_LINE_ARGUMENT NULL
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VARIABLE_NAME AUTOCOMMIT
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VARIABLE_SCOPE SESSION
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VARIABLE_TYPE BOOLEAN
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VARIABLE_COMMENT If set to 1, the default, all queries are committed immediately. If set to 0, they are only committed upon a COMMIT statement, or rolled back with a ROLLBACK statement. If autocommit is set to 0, and then changed to 1, all open transactions are immediately committed
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NUMERIC_MIN_VALUE NULL
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NUMERIC_MAX_VALUE NULL
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NUMERIC_BLOCK_SIZE NULL
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ENUM_VALUE_LIST OFF,ON
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READ_ONLY NO
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COMMAND_LINE_ARGUMENT NULL
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VARIABLE_NAME AUTOMATIC_SP_PRIVILEGES
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VARIABLE_SCOPE GLOBAL
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VARIABLE_TYPE BOOLEAN
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VARIABLE_COMMENT Creating and dropping stored procedures alters ACLs
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NUMERIC_MIN_VALUE NULL
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NUMERIC_MAX_VALUE NULL
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NUMERIC_BLOCK_SIZE NULL
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ENUM_VALUE_LIST OFF,ON
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READ_ONLY NO
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COMMAND_LINE_ARGUMENT OPTIONAL
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VARIABLE_NAME AUTO_INCREMENT_INCREMENT
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VARIABLE_SCOPE SESSION
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VARIABLE_TYPE BIGINT UNSIGNED
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VARIABLE_COMMENT Auto-increment columns are incremented by this
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NUMERIC_MIN_VALUE 1
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NUMERIC_MAX_VALUE 65535
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NUMERIC_BLOCK_SIZE 1
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ENUM_VALUE_LIST NULL
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READ_ONLY NO
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COMMAND_LINE_ARGUMENT OPTIONAL
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VARIABLE_NAME AUTO_INCREMENT_OFFSET
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VARIABLE_SCOPE SESSION
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VARIABLE_TYPE BIGINT UNSIGNED
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VARIABLE_COMMENT Offset added to Auto-increment columns. Used when auto-increment-increment != 1
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NUMERIC_MIN_VALUE 1
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|
NUMERIC_MAX_VALUE 65535
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NUMERIC_BLOCK_SIZE 1
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ENUM_VALUE_LIST NULL
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|
READ_ONLY NO
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|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME BACK_LOG
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|
VARIABLE_SCOPE GLOBAL
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|
VARIABLE_TYPE BIGINT UNSIGNED
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|
VARIABLE_COMMENT The number of outstanding connection requests MariaDB can have. This comes into play when the main MariaDB thread gets many connection requests in a very short time
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 65535
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME BASEDIR
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|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT Path to installation directory. All paths are usually resolved relative to this
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|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME BIND_ADDRESS
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|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
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|
VARIABLE_COMMENT IP address to bind to. Several addresses may be specified, separated by a comma (,)
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|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
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|
VARIABLE_NAME BINLOG_ANNOTATE_ROW_EVENTS
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|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BOOLEAN
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|
VARIABLE_COMMENT Tells the master to annotate RBR events with the statement that caused these events
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|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME BINLOG_CACHE_SIZE
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|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT 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
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|
NUMERIC_MIN_VALUE 4096
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 4096
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME BINLOG_CHECKSUM
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|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE ENUM
|
|
VARIABLE_COMMENT Type of BINLOG_CHECKSUM_ALG. Include checksum for log events in the binary log
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NONE,CRC32
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME BINLOG_COMMIT_WAIT_COUNT
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT If non-zero, binlog write will wait at most binlog_commit_wait_usec microseconds for at least this many commits to queue up for group commit to the binlog. This can reduce I/O on the binlog and provide increased opportunity for parallel apply on the slave, but too high a value will decrease commit throughput
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME BINLOG_COMMIT_WAIT_USEC
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Maximum time, in microseconds, to wait for more commits to queue up for binlog group commit. Only takes effect if the value of binlog_commit_wait_count is non-zero
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME BINLOG_DIRECT_NON_TRANSACTIONAL_UPDATES
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT 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
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME BINLOG_EXPIRE_LOGS_SECONDS
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT If non-zero, binary logs will be purged after binlog_expire_logs_seconds seconds; It and expire_logs_days are linked, such that changes in one are converted into the other. Possible purges happen at startup and at binary log rotation
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 8553600
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME BINLOG_FILE_CACHE_SIZE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT The size of file cache for the binary log
|
|
NUMERIC_MIN_VALUE 8192
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 4096
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME BINLOG_FORMAT
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE ENUM
|
|
VARIABLE_COMMENT The binary logging format the master will use: ROW for row-based binary logging (safer), STATEMENT for statement-based binary logging (smaller binary logs), MIXED for statement-based binary logging when it's safe with fall back to row-based otherwise
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST MIXED,STATEMENT,ROW
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME BINLOG_GTID_INDEX
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Enable the creation of a GTID index for every binlog file, and the use of such index for speeding up GTID lookup in the binlog
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME BINLOG_GTID_INDEX_PAGE_SIZE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE INT UNSIGNED
|
|
VARIABLE_COMMENT Page size to use for the binlog GTID index
|
|
NUMERIC_MIN_VALUE 64
|
|
NUMERIC_MAX_VALUE 16777216
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME BINLOG_GTID_INDEX_SPAN_MIN
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE INT UNSIGNED
|
|
VARIABLE_COMMENT Control sparseness of the binlog GTID index. If set to N, at most one index record will be added for every N bytes of binlog file written, to reduce the size of the index. Normally does not need tuning
|
|
NUMERIC_MIN_VALUE 1
|
|
NUMERIC_MAX_VALUE 1073741824
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME BINLOG_LARGE_COMMIT_THRESHOLD
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Increases transaction concurrency for large transactions (i.e. those with sizes larger than this value) by using the large transaction's cache file as a new binary log, and rotating the active binary log to the large transaction's cache file at commit time. This avoids the default commit logic that copies the transaction cache data to the end of the active binary log file while holding a lock that prevents other transactions from binlogging
|
|
NUMERIC_MIN_VALUE 10485760
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME BINLOG_OPTIMIZE_THREAD_SCHEDULING
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Run fast part of group commit in a single thread, to optimize kernel thread scheduling. On by default. Disable to run each transaction in group commit in its own thread, which can be slower at very high concurrency. This option is mostly for testing one algorithm versus the other, and it should not normally be necessary to change it. This variable is deprecated and will be removed in a future release
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME BINLOG_ROW_IMAGE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE ENUM
|
|
VARIABLE_COMMENT Controls whether rows should be logged in 'FULL', 'FULL_NODUP', 'NOBLOB' or 'MINIMAL' formats. 'FULL', means that all columns in the before and after image are logged. 'FULL_NODUP', means that all columns are logged in before image, but only changed columns or all columns of inserted record are logged in after image, 'NOBLOB', means that MariaDB 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
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST MINIMAL,NOBLOB,FULL,FULL_NODUP
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME BINLOG_ROW_METADATA
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE ENUM
|
|
VARIABLE_COMMENT Controls whether metadata is logged using FULL , MINIMAL format and NO_LOG. FULL causes all metadata to be logged; MINIMAL means that only metadata actually required by slave is logged; NO_LOG NO metadata will be logged
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NO_LOG,MINIMAL,FULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME BINLOG_SPACE_LIMIT
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Alias for max_binlog_total_size. Compatibility with Percona server
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME BINLOG_STMT_CACHE_SIZE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT 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
|
|
NUMERIC_MIN_VALUE 4096
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 4096
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME BLOCK_ENCRYPTION_MODE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE ENUM
|
|
VARIABLE_COMMENT Default block encryption mode for AES_ENCRYPT() and AES_DECRYPT() functions
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST aes-128-ecb,aes-192-ecb,aes-256-ecb,aes-128-cbc,aes-192-cbc,aes-256-cbc,aes-128-ctr,aes-192-ctr,aes-256-ctr
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME BULK_INSERT_BUFFER_SIZE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Size of tree cache used in bulk insert optimization. Note that this is a limit per thread
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME CHARACTER_SETS_DIR
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT Directory where character sets are
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME CHARACTER_SET_CLIENT
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE ENUM
|
|
VARIABLE_COMMENT The character set for statements that arrive from the client
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME CHARACTER_SET_COLLATIONS
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT Overrides for character set default collations
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME CHARACTER_SET_CONNECTION
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE ENUM
|
|
VARIABLE_COMMENT The character set used for literals that do not have a character set introducer and for number-to-string conversion
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME CHARACTER_SET_DATABASE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE ENUM
|
|
VARIABLE_COMMENT The character set used by the default database
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME CHARACTER_SET_FILESYSTEM
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE ENUM
|
|
VARIABLE_COMMENT The filesystem character set
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME CHARACTER_SET_RESULTS
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE ENUM
|
|
VARIABLE_COMMENT The character set used for returning query results to the client
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME CHARACTER_SET_SERVER
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE ENUM
|
|
VARIABLE_COMMENT The default character set
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME CHARACTER_SET_SYSTEM
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE ENUM
|
|
VARIABLE_COMMENT The character set used by the server for storing identifiers
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME CHECK_CONSTRAINT_CHECKS
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT check_constraint_checks
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME COLLATION_CONNECTION
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE ENUM
|
|
VARIABLE_COMMENT The collation of the connection character set
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME COLLATION_DATABASE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE ENUM
|
|
VARIABLE_COMMENT The collation of the database character set
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME COLLATION_SERVER
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE ENUM
|
|
VARIABLE_COMMENT The server default collation
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME COLUMN_COMPRESSION_THRESHOLD
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE INT UNSIGNED
|
|
VARIABLE_COMMENT Minimum column data length eligible for compression
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME COLUMN_COMPRESSION_ZLIB_LEVEL
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE INT UNSIGNED
|
|
VARIABLE_COMMENT zlib compression level (1 gives best speed, 9 gives best compression)
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 9
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME COLUMN_COMPRESSION_ZLIB_STRATEGY
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE ENUM
|
|
VARIABLE_COMMENT The strategy parameter is used to tune the compression algorithm. Use the value DEFAULT_STRATEGY for normal data, FILTERED for data produced by a filter (or predictor), HUFFMAN_ONLY to force Huffman encoding only (no string match), or RLE to limit match distances to one (run-length encoding). Filtered data consists mostly of small values with a somewhat random distribution. In this case, the compression algorithm is tuned to compress them better. The effect of FILTERED is to force more Huffman coding and less string matching; it is somewhat intermediate between DEFAULT_STRATEGY and HUFFMAN_ONLY. RLE is designed to be almost as fast as HUFFMAN_ONLY, but give better compression for PNG image data. The strategy parameter only affects the compression ratio but not the correctness of the compressed output even if it is not set appropriately. FIXED prevents the use of dynamic Huffman codes, allowing for a simpler decoder for special applications
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST DEFAULT_STRATEGY,FILTERED,HUFFMAN_ONLY,RLE,FIXED
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME COLUMN_COMPRESSION_ZLIB_WRAP
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Generate zlib header and trailer and compute adler32 check value. It can be used with storage engines that don't provide data integrity verification to detect data corruption
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME COMPLETION_TYPE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE ENUM
|
|
VARIABLE_COMMENT The transaction completion type
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NO_CHAIN,CHAIN,RELEASE
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME CONCURRENT_INSERT
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE ENUM
|
|
VARIABLE_COMMENT Use concurrent insert with MyISAM
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NEVER,AUTO,ALWAYS
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME CONNECT_TIMEOUT
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT The number of seconds the MariaDB server is waiting for a connect packet before responding with 'Bad handshake'
|
|
NUMERIC_MIN_VALUE 2
|
|
NUMERIC_MAX_VALUE 31536000
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME CORE_FILE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Write core on crashes
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME CREATE_TMP_TABLE_BINLOG_FORMATS
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE SET
|
|
VARIABLE_COMMENT The binary logging formats under which the master will log CREATE TEMPORARY statments to the binary log. If CREATE TEMPORARY is not logged, all usage of the temporary table will be logged in ROW format. Allowed values are STATEMENT or MIXED,STATEMENT
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST MIXED,STATEMENT
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME DATADIR
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT Path to the database root directory
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME DEADLOCK_SEARCH_DEPTH_LONG
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Long search depth for the two-step deadlock detection
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 33
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME DEADLOCK_SEARCH_DEPTH_SHORT
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Short search depth for the two-step deadlock detection
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 32
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME DEADLOCK_TIMEOUT_LONG
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Long timeout for the two-step deadlock detection (in microseconds)
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME DEADLOCK_TIMEOUT_SHORT
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Short timeout for the two-step deadlock detection (in microseconds)
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME DEFAULT_PASSWORD_LIFETIME
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE INT UNSIGNED
|
|
VARIABLE_COMMENT This defines the global password expiration policy. 0 means automatic password expiration is disabled. If the value is a positive integer N, the passwords must be changed every N days. This behavior can be overridden using the password expiration options in ALTER USER
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME DEFAULT_REGEX_FLAGS
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE SET
|
|
VARIABLE_COMMENT Default flags for the regex library
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST DOTALL,DUPNAMES,EXTENDED,EXTENDED_MORE,EXTRA,MULTILINE,UNGREEDY
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME DEFAULT_STORAGE_ENGINE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT The default storage engine for new tables
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME DEFAULT_TMP_STORAGE_ENGINE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT The default storage engine for user-created temporary tables
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME DEFAULT_WEEK_FORMAT
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT The default week format used by WEEK() functions
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 7
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME DELAYED_INSERT_LIMIT
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT 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
|
|
NUMERIC_MIN_VALUE 1
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME DELAYED_INSERT_TIMEOUT
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT How long a INSERT DELAYED thread should wait for INSERT statements before terminating
|
|
NUMERIC_MIN_VALUE 1
|
|
NUMERIC_MAX_VALUE 31536000
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME DELAYED_QUEUE_SIZE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT 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
|
|
NUMERIC_MIN_VALUE 1
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME DELAY_KEY_WRITE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE ENUM
|
|
VARIABLE_COMMENT Specifies how MyISAM tables handles CREATE TABLE DELAY_KEY_WRITE. If set to ON, the default, any DELAY KEY WRITEs are honored. The key buffer is then flushed only when the table closes, speeding up writes. MyISAM tables should be automatically checked upon startup in this case, and --external locking should not be used, as it can lead to index corruption. If set to OFF, DELAY KEY WRITEs are ignored, while if set to ALL, all new opened tables are treated as if created with DELAY KEY WRITEs enabled
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON,ALL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME DISCONNECT_ON_EXPIRED_PASSWORD
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT This variable controls how the server handles clients that are not aware of the sandbox mode. If enabled, the server disconnects the client, otherwise the server puts the client in a sandbox mode
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME DIV_PRECISION_INCREMENT
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Precision of the result of '/' operator will be increased on that value
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 38
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME ENCRYPT_BINLOG
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Encrypt binary logs (including relay logs)
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME ENCRYPT_TMP_DISK_TABLES
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Encrypt temporary on-disk tables (created as part of query execution)
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME ENCRYPT_TMP_FILES
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Encrypt temporary files (created for filesort, binary log cache, etc)
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME ENFORCE_STORAGE_ENGINE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT Force the use of a storage engine for new tables
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME EQ_RANGE_INDEX_DIVE_LIMIT
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE INT UNSIGNED
|
|
VARIABLE_COMMENT 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
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME ERROR_COUNT
|
|
VARIABLE_SCOPE SESSION ONLY
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT The number of errors that resulted from the last statement that generated messages
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME EXPENSIVE_SUBQUERY_LIMIT
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT The maximum number of rows a subquery may examine in order to be executed during optimization and used for constant optimization
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME EXPIRE_LOGS_DAYS
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE DOUBLE
|
|
VARIABLE_COMMENT If non-zero, binary logs will be purged after expire_logs_days days; It and binlog_expire_logs_seconds are linked, such that changes in one are converted into the other, presentable as a decimal value with 1/1000000 of the day precision; possible purges happen at startup and at binary log rotation
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 99
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME EXPLICIT_DEFAULTS_FOR_TIMESTAMP
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT 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
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME EXTERNAL_USER
|
|
VARIABLE_SCOPE SESSION ONLY
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT The external user account used when logging in
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME EXTRA_MAX_CONNECTIONS
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT The number of connections on extra-port
|
|
NUMERIC_MIN_VALUE 1
|
|
NUMERIC_MAX_VALUE 100000
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME EXTRA_PORT
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE INT UNSIGNED
|
|
VARIABLE_COMMENT Extra port number to use for tcp connections in a one-thread-per-connection manner. 0 means don't use another port
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 65535
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME FLUSH
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Flush MyISAM tables to disk between SQL commands
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME FLUSH_TIME
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT A dedicated thread is created to flush all tables at the given interval
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 31536000
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME FOREIGN_KEY_CHECKS
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT If set to 1 (the default) foreign key constraints (including ON UPDATE and ON DELETE behavior) InnoDB tables are checked, while if set to 0, they are not checked. 0 is not recommended for normal use, though it can be useful in situations where you know the data is consistent, but want to reload data in a different order from that that specified by parent/child relationships. Setting this variable to 1 does not retrospectively check for inconsistencies introduced while set to 0
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME FT_BOOLEAN_SYNTAX
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT List of operators for MATCH ... AGAINST ( ... IN BOOLEAN MODE)
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME FT_MAX_WORD_LEN
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT The maximum length of the word to be included in a FULLTEXT index. Note: FULLTEXT indexes must be rebuilt after changing this variable
|
|
NUMERIC_MIN_VALUE 10
|
|
NUMERIC_MAX_VALUE 84
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME FT_MIN_WORD_LEN
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT The minimum length of the word to be included in a FULLTEXT index. Note: FULLTEXT indexes must be rebuilt after changing this variable
|
|
NUMERIC_MIN_VALUE 1
|
|
NUMERIC_MAX_VALUE 84
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME FT_QUERY_EXPANSION_LIMIT
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Number of best matches to use for query expansion
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 1000
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME FT_STOPWORD_FILE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT Use stopwords from this file instead of built-in list
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME GENERAL_LOG
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Log connections and queries to a table or log file. Defaults logging to a file 'hostname'.log or a table mysql.general_log if --log-output=TABLE is used
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME GENERAL_LOG_FILE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT Log connections and queries to given file
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME GROUP_CONCAT_MAX_LEN
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE INT UNSIGNED
|
|
VARIABLE_COMMENT The maximum length of the result of function GROUP_CONCAT()
|
|
NUMERIC_MIN_VALUE 4
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME GTID_DOMAIN_ID
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE INT UNSIGNED
|
|
VARIABLE_COMMENT Used with global transaction ID to identify logically independent replication streams. When events can propagate through multiple parallel paths (for example multiple masters), each independent source server must use a distinct domain_id. For simple tree-shaped replication topologies, it can be left at its default, 0
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME GTID_SEQ_NO
|
|
VARIABLE_SCOPE SESSION ONLY
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Internal server usage, for replication with global transaction id. When set, next event group logged to the binary log will use this sequence number, not generate a new one, thus allowing to preserve master's GTID in slave's binlog
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME HAVE_COMPRESS
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT If the zlib compression library is accessible to the server, this will be set to YES, otherwise it will be NO. The COMPRESS() and UNCOMPRESS() functions will only be available if set to YES
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME HAVE_CRYPT
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT If the crypt() system call is available this variable will be set to YES, otherwise it will be set to NO. If set to NO, the ENCRYPT() function cannot be used
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME HAVE_DYNAMIC_LOADING
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT If the server supports dynamic loading of plugins, will be set to YES, otherwise will be set to NO
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME HAVE_GEOMETRY
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT If the server supports spatial data types, will be set to YES, otherwise will be set to NO
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME HAVE_OPENSSL
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT Comparing have_openssl with have_ssl will indicate whether YaSSL or openssl was used. If YaSSL, have_ssl will be YES, but have_openssl will be NO
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME HAVE_PROFILING
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT If statement profiling is available, will be set to YES, otherwise will be set to NO. See SHOW PROFILES and SHOW PROFILE
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME HAVE_QUERY_CACHE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT If the server supports the query cache, will be set to YES, otherwise will be set to NO
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME HAVE_RTREE_KEYS
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT If RTREE indexes (used for spatial indexes) are available, will be set to YES, otherwise will be set to NO
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME HAVE_SSL
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT If the server supports secure connections, will be set to YES, otherwise will be set to NO. If set to DISABLED, the server was compiled with TLS support, but was not started with TLS support (see the mariadbd options). See also have_openssl
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME HAVE_SYMLINK
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT If symbolic link support is enabled, will be set to YES, otherwise will be set to NO. Required for the INDEX DIRECTORY and DATA DIRECTORY table options (see CREATE TABLE) and Windows symlink support. Will be set to DISABLED if the server is started with the --skip-symbolic-links option
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME HISTOGRAM_SIZE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Number of bytes used for a histogram. If set to 0, no histograms are created by ANALYZE
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 255
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME HISTOGRAM_TYPE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE ENUM
|
|
VARIABLE_COMMENT Specifies type of the histograms created by ANALYZE. Possible values are: SINGLE_PREC_HB - single precision height-balanced, DOUBLE_PREC_HB - double precision height-balanced, JSON_HB - height-balanced, stored as JSON
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST SINGLE_PREC_HB,DOUBLE_PREC_HB,JSON_HB
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME HOSTNAME
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT Server host name
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME HOST_CACHE_SIZE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT How many host names should be cached to avoid resolving
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 65536
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME IDENTITY
|
|
VARIABLE_SCOPE SESSION ONLY
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Synonym for the last_insert_id variable
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME IDLE_READONLY_TRANSACTION_TIMEOUT
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE INT UNSIGNED
|
|
VARIABLE_COMMENT The number of seconds the server waits for read-only idle transaction
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 31536000
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME IDLE_TRANSACTION_TIMEOUT
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE INT UNSIGNED
|
|
VARIABLE_COMMENT The number of seconds the server waits for idle transaction
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 31536000
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME IDLE_WRITE_TRANSACTION_TIMEOUT
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE INT UNSIGNED
|
|
VARIABLE_COMMENT The number of seconds the server waits for write idle transaction
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 31536000
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME IGNORE_BUILTIN_INNODB
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Disable initialization of builtin InnoDB plugin
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME IGNORE_DB_DIRS
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT Specifies a directory to add to the ignore list when collecting database names from the datadir. Put a blank argument to reset the list accumulated so far
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME INIT_CONNECT
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT Command(s) that are executed for each new connection (unless the user has SUPER privilege)
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME INIT_FILE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT Read SQL commands from this file at startup
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME INIT_SLAVE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT Command(s) that are executed by a slave server each time the SQL thread starts
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME INSERT_ID
|
|
VARIABLE_SCOPE SESSION ONLY
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT The value to be used by the following INSERT or ALTER TABLE statement when inserting an AUTO_INCREMENT value
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME INTERACTIVE_TIMEOUT
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT The number of seconds the server waits for activity on an interactive connection before closing it
|
|
NUMERIC_MIN_VALUE 1
|
|
NUMERIC_MAX_VALUE 31536000
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME IN_PREDICATE_CONVERSION_THRESHOLD
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE INT UNSIGNED
|
|
VARIABLE_COMMENT The minimum number of scalar elements in the value list of IN predicate that triggers its conversion to IN subquery. Set to 0 to disable the conversion
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME IN_TRANSACTION
|
|
VARIABLE_SCOPE SESSION ONLY
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Whether there is an active transaction
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 1
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME JOIN_BUFFER_SIZE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT The size of the buffer that is used for joins
|
|
NUMERIC_MIN_VALUE 128
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 128
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME JOIN_BUFFER_SPACE_LIMIT
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT The limit of the space for all join buffers used by a query
|
|
NUMERIC_MIN_VALUE 2048
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 2048
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME JOIN_CACHE_LEVEL
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Controls what join operations can be executed with join buffers. Odd numbers are used for plain join buffers while even numbers are used for linked buffers
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 8
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME KEEP_FILES_ON_CREATE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Don't overwrite stale .MYD and .MYI even if no directory is specified
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME KEY_BUFFER_SIZE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT The size of the buffer used for index blocks for MyISAM tables. Increase this to get faster index handling
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 4096
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME KEY_CACHE_AGE_THRESHOLD
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT 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
|
|
NUMERIC_MIN_VALUE 100
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 100
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME KEY_CACHE_BLOCK_SIZE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT The default size of key cache blocks
|
|
NUMERIC_MIN_VALUE 512
|
|
NUMERIC_MAX_VALUE 16384
|
|
NUMERIC_BLOCK_SIZE 512
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME KEY_CACHE_DIVISION_LIMIT
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT The minimum percentage of warm blocks in key cache
|
|
NUMERIC_MIN_VALUE 1
|
|
NUMERIC_MAX_VALUE 100
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME KEY_CACHE_FILE_HASH_SIZE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Number of hash buckets for open and changed files. If you have a lot of MyISAM files open you should increase this for faster flush of changes. A good value is probably 1/10 of number of possible open MyISAM files
|
|
NUMERIC_MIN_VALUE 128
|
|
NUMERIC_MAX_VALUE 16384
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME KEY_CACHE_SEGMENTS
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT The number of segments in a key cache
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 64
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME LARGE_FILES_SUPPORT
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Whether mariadbd was compiled with options for large file support
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME LARGE_PAGES
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Enable support for large pages
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME LAST_INSERT_ID
|
|
VARIABLE_SCOPE SESSION ONLY
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT The value to be returned from LAST_INSERT_ID()
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME LC_MESSAGES
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE ENUM
|
|
VARIABLE_COMMENT Set the language used for the error messages
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME LC_MESSAGES_DIR
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT Directory where error messages are
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME LC_TIME_NAMES
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE ENUM
|
|
VARIABLE_COMMENT Set the language used for the month names and the days of the week
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME LICENSE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT The type of license the server has
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME LOCAL_INFILE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Enable LOAD DATA LOCAL INFILE
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME LOCKED_IN_MEMORY
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Whether mariadbd process was locked in memory with --memlock
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME LOCK_WAIT_TIMEOUT
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Timeout in seconds to wait for a lock before returning an error
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 31536000
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME LOG_BIN
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Whether the binary log is enabled
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME LOG_BIN_COMPRESS
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Whether the binary log can be compressed
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME LOG_BIN_COMPRESS_MIN_LEN
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE INT UNSIGNED
|
|
VARIABLE_COMMENT Minimum length of sql statement (in statement mode) or record (in row mode) that can be compressed
|
|
NUMERIC_MIN_VALUE 10
|
|
NUMERIC_MAX_VALUE 1024
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME LOG_BIN_TRUST_FUNCTION_CREATORS
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT 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
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME LOG_DISABLED_STATEMENTS
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE SET
|
|
VARIABLE_COMMENT Don't log certain types of statements to general log
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST slave,sp
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME LOG_ERROR
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT Log errors to file (instead of stdout). If file name is not specified then 'datadir'/'log-basename'.err or the 'pid-file' path with extension .err is used
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME LOG_OUTPUT
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE SET
|
|
VARIABLE_COMMENT How logs should be written
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NONE,FILE,TABLE
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME LOG_QUERIES_NOT_USING_INDEXES
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Log queries that are executed without benefit of any index to the slow log if it is open. Same as log_slow_filter='not_using_index'
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME LOG_SLOW_ADMIN_STATEMENTS
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Log slow OPTIMIZE, ANALYZE, ALTER and other administrative statements to the slow log if it is open. Resets or sets the option 'admin' in log_slow_filter
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME LOG_SLOW_ALWAYS_QUERY_TIME
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE DOUBLE
|
|
VARIABLE_COMMENT Queries slower than log_slow_always_query_time are not affected by log_slow_rate_limit or log_slow_min_examined_row_limit. Query will be logged if execution time of the query is longer than log_slow_query_time and log_slow_always_query_time. The argument will be treated as a decimal value with microsecond precision
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 31536000
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME LOG_SLOW_DISABLED_STATEMENTS
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE SET
|
|
VARIABLE_COMMENT Don't log certain types of statements to slow log
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST admin,call,slave,sp
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME LOG_SLOW_FILTER
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE SET
|
|
VARIABLE_COMMENT Log only certain types of queries to the slow log. If variable is empty all kinds of queries are logged. All types are bound by slow_query_time, except 'not_using_index' which is always logged if enabled
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST admin,filesort,filesort_on_disk,filesort_priority_queue,full_join,full_scan,not_using_index,query_cache,query_cache_miss,tmp_table,tmp_table_on_disk
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME LOG_SLOW_MAX_WARNINGS
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Max numbers of warnings printed to slow query log per statement
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 1000
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME LOG_SLOW_MIN_EXAMINED_ROW_LIMIT
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Don't write queries to slow log that examine fewer rows than that
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME LOG_SLOW_QUERY
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT 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
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME LOG_SLOW_QUERY_FILE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT Log slow queries to given log file. Defaults logging to 'hostname'-slow.log. Must be enabled to activate other slow log options
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME LOG_SLOW_QUERY_TIME
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE DOUBLE
|
|
VARIABLE_COMMENT Log all queries that have taken more than log_slow_query_time seconds to execute to the slow query log file. The argument will be treated as a decimal value with microsecond precision. Affected by log_slow_rate_limit and log_slow_min_examined_row_limit
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 31536000
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME LOG_SLOW_RATE_LIMIT
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Write to slow log every #th slow query. Set to 1 to log everything. Increase it to reduce the size of the slow or the performance impact of slow logging
|
|
NUMERIC_MIN_VALUE 1
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME LOG_SLOW_SLAVE_STATEMENTS
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Log slow statements executed by slave thread to the slow log if it is open. Resets or sets the option 'slave' in log_slow_disabled_statements
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME LOG_SLOW_VERBOSITY
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE SET
|
|
VARIABLE_COMMENT Verbosity level for the slow log
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST innodb,query_plan,explain,engine,warnings,full
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME LOG_WARNINGS
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Log some non-critical warnings to the error log. Value can be between 0 and 11. Higher values mean more verbosity
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME LONG_QUERY_TIME
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE DOUBLE
|
|
VARIABLE_COMMENT Alias for log_slow_query_time
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 31536000
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME LOWER_CASE_FILE_SYSTEM
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Case sensitivity of file names on the file system where the data directory is located
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME LOWER_CASE_TABLE_NAMES
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE INT UNSIGNED
|
|
VARIABLE_COMMENT 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
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 2
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME LOW_PRIORITY_UPDATES
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT INSERT/DELETE/UPDATE has lower priority than selects
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME MAX_ALLOWED_PACKET
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Max packet length to send to or receive from the server
|
|
NUMERIC_MIN_VALUE 1024
|
|
NUMERIC_MAX_VALUE 1073741824
|
|
NUMERIC_BLOCK_SIZE 1024
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME MAX_BINLOG_CACHE_SIZE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Sets the total size of the transactional cache
|
|
NUMERIC_MIN_VALUE 4096
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 4096
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME MAX_BINLOG_SIZE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Binary log will be rotated automatically when the size exceeds this value, unless `binlog_large_commit_threshold` causes rotation prematurely
|
|
NUMERIC_MIN_VALUE 4096
|
|
NUMERIC_MAX_VALUE 1073741824
|
|
NUMERIC_BLOCK_SIZE 4096
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME MAX_BINLOG_STMT_CACHE_SIZE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Sets the total size of the statement cache
|
|
NUMERIC_MIN_VALUE 4096
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 4096
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME MAX_BINLOG_TOTAL_SIZE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Maximum space to use for all binary logs. Extra logs are deleted on server start, log rotation, FLUSH LOGS or when writing to binlog. Default is 0, which means no size restrictions. See also slave_connections_needed_for_purge
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME MAX_CONNECTIONS
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT The number of simultaneous clients allowed
|
|
NUMERIC_MIN_VALUE 10
|
|
NUMERIC_MAX_VALUE 100000
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME MAX_CONNECT_ERRORS
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT If there is more than this number of interrupted connections from a host this host will be blocked from further connections
|
|
NUMERIC_MIN_VALUE 1
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME MAX_DELAYED_THREADS
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Don't start more than this number of threads to handle INSERT DELAYED statements. If set to zero INSERT DELAYED will be not used
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 16384
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME MAX_DIGEST_LENGTH
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE INT UNSIGNED
|
|
VARIABLE_COMMENT Maximum length considered for digest text
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 1048576
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME MAX_ERROR_COUNT
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Max number of errors/warnings to store for a statement
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 65535
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME MAX_HEAP_TABLE_SIZE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Don't allow creation of heap tables bigger than this
|
|
NUMERIC_MIN_VALUE 16384
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 1024
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME MAX_INSERT_DELAYED_THREADS
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Alias for 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
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 16384
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME MAX_JOIN_SIZE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Joins that are probably going to read more than max_join_size records return an error
|
|
NUMERIC_MIN_VALUE 1
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME MAX_LENGTH_FOR_SORT_DATA
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Max number of bytes in sorted records
|
|
NUMERIC_MIN_VALUE 4
|
|
NUMERIC_MAX_VALUE 8388608
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME MAX_OPEN_CURSORS
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE INT UNSIGNED
|
|
VARIABLE_COMMENT The maximum number of open cursors allowed per session
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 65536
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME MAX_PASSWORD_ERRORS
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE INT UNSIGNED
|
|
VARIABLE_COMMENT If there is more than this number of failed connect attempts due to invalid password, user will be blocked from further connections until FLUSH_PRIVILEGES
|
|
NUMERIC_MIN_VALUE 1
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME MAX_PREPARED_STMT_COUNT
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE INT UNSIGNED
|
|
VARIABLE_COMMENT Maximum number of prepared statements in the server
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME MAX_RECURSIVE_ITERATIONS
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Maximum number of iterations when executing recursive queries
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME MAX_ROWID_FILTER_SIZE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT The maximum size of the container of a rowid filter
|
|
NUMERIC_MIN_VALUE 1024
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME MAX_SEEKS_FOR_KEY
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Limit assumed max number of seeks when looking up rows based on a key
|
|
NUMERIC_MIN_VALUE 1
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME MAX_SESSION_MEM_USED
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Amount of memory a single user session is allowed to allocate. This limits the value of the session variable MEM_USED
|
|
NUMERIC_MIN_VALUE 8192
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME MAX_SORT_LENGTH
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT The number of bytes to use when sorting BLOB or TEXT values (only the first max_sort_length bytes of each value are used; the rest are ignored)
|
|
NUMERIC_MIN_VALUE 64
|
|
NUMERIC_MAX_VALUE 8388608
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME MAX_SP_RECURSION_DEPTH
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Maximum stored procedure recursion depth
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 255
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME MAX_STATEMENT_TIME
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE DOUBLE
|
|
VARIABLE_COMMENT A query that has taken more than max_statement_time seconds will be aborted. The argument will be treated as a decimal value with microsecond precision. A value of 0 (default) means no timeout
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 31536000
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME MAX_TMP_SESSION_SPACE_USAGE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT The maximum total size of temporary file and temporary table usage. A value of 0 disables this feature
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 65536
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME MAX_TMP_TOTAL_SPACE_USAGE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT The maximum total size of all temporary file and temporary table usage over all connections. A value of 0 disables this feature
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 65536
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME MAX_USER_CONNECTIONS
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE INT
|
|
VARIABLE_COMMENT The maximum number of active connections for a single user (0 = no limit)
|
|
NUMERIC_MIN_VALUE -1
|
|
NUMERIC_MAX_VALUE 2147483647
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME MAX_WRITE_LOCK_COUNT
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT After this many write locks, allow some read locks to run in between
|
|
NUMERIC_MIN_VALUE 1
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME METADATA_LOCKS_CACHE_SIZE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Unused
|
|
NUMERIC_MIN_VALUE 1
|
|
NUMERIC_MAX_VALUE 1048576
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME METADATA_LOCKS_HASH_INSTANCES
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Unused
|
|
NUMERIC_MIN_VALUE 1
|
|
NUMERIC_MAX_VALUE 1024
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME METADATA_LOCKS_INSTANCES
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE INT UNSIGNED
|
|
VARIABLE_COMMENT Number of fast lanes to create for metadata locks. Can be used to improve DML scalability by eliminating MDL_lock::rwlock load. Use 1 to disable MDL fast lanes. Supported MDL namespaces: BACKUP
|
|
NUMERIC_MIN_VALUE 1
|
|
NUMERIC_MAX_VALUE 256
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME MHNSW_DEFAULT_DISTANCE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE ENUM
|
|
VARIABLE_COMMENT Distance function to build the vector index for
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST euclidean,cosine
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME MHNSW_DEFAULT_M
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE INT UNSIGNED
|
|
VARIABLE_COMMENT Larger values mean slower SELECTs and INSERTs, larger index size and higher memory consumption but more accurate results
|
|
NUMERIC_MIN_VALUE 3
|
|
NUMERIC_MAX_VALUE 200
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME MHNSW_EF_SEARCH
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE INT UNSIGNED
|
|
VARIABLE_COMMENT Larger values mean slower SELECTs but more accurate results. Defines the minimal number of result candidates to look for in the vector index for ORDER BY ... LIMIT N queries. The search will never search for less rows than that, even if LIMIT is smaller
|
|
NUMERIC_MIN_VALUE 1
|
|
NUMERIC_MAX_VALUE 10000
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME MHNSW_MAX_CACHE_SIZE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Upper limit for one MHNSW vector index cache
|
|
NUMERIC_MIN_VALUE 1048576
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME MIN_EXAMINED_ROW_LIMIT
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Alias for log_slow_min_examined_row_limit. Don't write queries to slow log that examine fewer rows than that
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME MRR_BUFFER_SIZE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Size of buffer to use when using MRR with range access
|
|
NUMERIC_MIN_VALUE 8192
|
|
NUMERIC_MAX_VALUE 2147483647
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME MYISAM_BLOCK_SIZE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Block size to be used for MyISAM index pages
|
|
NUMERIC_MIN_VALUE 1024
|
|
NUMERIC_MAX_VALUE 16384
|
|
NUMERIC_BLOCK_SIZE 1024
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME MYISAM_DATA_POINTER_SIZE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Default pointer size to be used for MyISAM tables
|
|
NUMERIC_MIN_VALUE 2
|
|
NUMERIC_MAX_VALUE 7
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME MYISAM_MAX_SORT_FILE_SIZE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Don't use the fast sort index method to created index if the temporary file would get bigger than this
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 9223372036854775807
|
|
NUMERIC_BLOCK_SIZE 1048576
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME MYISAM_MMAP_SIZE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Restricts the total memory used for memory mapping of MyISAM tables
|
|
NUMERIC_MIN_VALUE 7
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME MYISAM_RECOVER_OPTIONS
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE SET
|
|
VARIABLE_COMMENT Specifies how corrupted tables should be automatically repaired
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST DEFAULT,BACKUP,FORCE,QUICK,BACKUP_ALL,OFF
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME MYISAM_REPAIR_THREADS
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT If larger than 1, when repairing a MyISAM table all indexes will be created in parallel, with one thread per index. The value of 1 disables parallel repair
|
|
NUMERIC_MIN_VALUE 1
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME MYISAM_SORT_BUFFER_SIZE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT The buffer that is allocated when sorting the index when doing a REPAIR or when creating indexes with CREATE INDEX or ALTER TABLE
|
|
NUMERIC_MIN_VALUE 4096
|
|
NUMERIC_MAX_VALUE 1152921504606846975
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME MYISAM_STATS_METHOD
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE ENUM
|
|
VARIABLE_COMMENT Specifies how MyISAM index statistics collection code should treat NULLs. Possible values of name are NULLS_UNEQUAL (default behavior for 4.1 and later), NULLS_EQUAL (emulate 4.0 behavior), and NULLS_IGNORED
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULLS_UNEQUAL,NULLS_EQUAL,NULLS_IGNORED
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME MYISAM_USE_MMAP
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Use memory mapping for reading and writing MyISAM tables
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NONE
|
|
VARIABLE_NAME MYSQL56_TEMPORAL_FORMAT
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Use MySQL-5.6 (instead of MariaDB-5.3) format for TIME, DATETIME, TIMESTAMP columns
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME NET_BUFFER_LENGTH
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Buffer length for TCP/IP and socket communication
|
|
NUMERIC_MIN_VALUE 1024
|
|
NUMERIC_MAX_VALUE 1048576
|
|
NUMERIC_BLOCK_SIZE 1024
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME NET_READ_TIMEOUT
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Number of seconds to wait for more data from a connection before aborting the read
|
|
NUMERIC_MIN_VALUE 1
|
|
NUMERIC_MAX_VALUE 31536000
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME NET_RETRY_COUNT
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT If a read on a communication port is interrupted, retry this many times before giving up
|
|
NUMERIC_MIN_VALUE 1
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME NET_WRITE_TIMEOUT
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Number of seconds to wait for a block to be written to a connection before aborting the write
|
|
NUMERIC_MIN_VALUE 1
|
|
NUMERIC_MAX_VALUE 31536000
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME NOTE_VERBOSITY
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE SET
|
|
VARIABLE_COMMENT Verbosity level for note-warnings given to the user. See also @@sql_notes
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST basic,unusable_keys,explain
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME OLD
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Use compatible behavior from previous MariaDB version
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME OLD_MODE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE SET
|
|
VARIABLE_COMMENT Used to emulate old behavior from earlier MariaDB or MySQL versions
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NO_DUP_KEY_WARNINGS_WITH_IGNORE,NO_PROGRESS_INFO,ZERO_DATE_TIME_CAST,UTF8_IS_UTF8MB3,IGNORE_INDEX_ONLY_FOR_JOIN,COMPAT_5_1_CHECKSUM,NO_NULL_COLLATION_IDS,LOCK_ALTER_TABLE_COPY,OLD_FLUSH_STATUS,SESSION_USER_IS_USER
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME OLD_PASSWORDS
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Use old password encryption method (needed for 4.0 and older clients)
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME OPEN_FILES_LIMIT
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT If this is not 0, then mariadbd will use this value to reserve file descriptors to use with setrlimit(). If this value is 0 or autoset then mariadbd will reserve max_connections*5 or max_connections + table_cache*2 (whichever is larger) number of file descriptors
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME OPTIMIZER_ADJUST_SECONDARY_KEY_COSTS
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Unused
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 2
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME OPTIMIZER_DISK_READ_COST
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE DOUBLE
|
|
VARIABLE_COMMENT Cost of reading a block of IO_SIZE (4096) from a disk (in usec)
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 10000
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME OPTIMIZER_DISK_READ_RATIO
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE DOUBLE
|
|
VARIABLE_COMMENT Chance that we have to do a disk read to find a row or index entry from the engine cache (cache_misses/total_cache_requests). 0.0 means that everything is cached and 1.0 means that nothing is expected to be in the engine cache
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 1
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME OPTIMIZER_EXTRA_PRUNING_DEPTH
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT If the optimizer needs to enumerate join prefix of this size or larger, then it will try aggressively prune away the search space
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 62
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME OPTIMIZER_INDEX_BLOCK_COPY_COST
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE DOUBLE
|
|
VARIABLE_COMMENT Cost of copying a key block from the cache to internal storage as part of an index scan
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 1000
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME OPTIMIZER_JOIN_LIMIT_PREF_RATIO
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT For queries with JOIN and ORDER BY LIMIT : make the optimizer consider a join order that allows to short-cut execution after producing #LIMIT matches if that promises N times speedup. (A conservative setting here would be is a high value, like 100 so the short-cutting plan is used if it promises a speedup of 100x or more). Short-cutting plans are inherently risky so the default is 0 which means do not consider this optimization
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME OPTIMIZER_KEY_COMPARE_COST
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE DOUBLE
|
|
VARIABLE_COMMENT Cost of checking a key against the end key condition
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 1000
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME OPTIMIZER_KEY_COPY_COST
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE DOUBLE
|
|
VARIABLE_COMMENT Cost of finding the next key in the engine and copying it to the SQL layer
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 1000
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME OPTIMIZER_KEY_LOOKUP_COST
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE DOUBLE
|
|
VARIABLE_COMMENT Cost for finding a key based on a key value
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 1000
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME OPTIMIZER_KEY_NEXT_FIND_COST
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE DOUBLE
|
|
VARIABLE_COMMENT Cost of finding the next key and rowid when using filters
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 1000
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME OPTIMIZER_MAX_SEL_ARGS
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT The maximum number of SEL_ARG objects created when optimizing a range. If more objects would be needed, the range will not be used by the optimizer
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME OPTIMIZER_MAX_SEL_ARG_WEIGHT
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT The maximum weight of the SEL_ARG graph. Set to 0 for no limit
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME OPTIMIZER_PRUNE_LEVEL
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT 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 cost and number of retrieved rows eq_ref: 2 - prune also if we find an eq_ref chain
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 2
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME OPTIMIZER_RECORD_CONTEXT
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Controls storing of optmizer context of all the tables that are referenced in a query
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME OPTIMIZER_ROWID_COMPARE_COST
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE DOUBLE
|
|
VARIABLE_COMMENT Cost of comparing two rowid's
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 1000
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME OPTIMIZER_ROWID_COPY_COST
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE DOUBLE
|
|
VARIABLE_COMMENT Cost of copying a rowid
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 1000
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME OPTIMIZER_ROW_COPY_COST
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE DOUBLE
|
|
VARIABLE_COMMENT Cost of copying a row from the engine or the join cache to the SQL layer
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 1000
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME OPTIMIZER_ROW_LOOKUP_COST
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE DOUBLE
|
|
VARIABLE_COMMENT Cost of finding a row based on a rowid or a clustered key
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 1000
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME OPTIMIZER_ROW_NEXT_FIND_COST
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE DOUBLE
|
|
VARIABLE_COMMENT Cost of finding the next row when scanning the table
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 1000
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME OPTIMIZER_SCAN_SETUP_COST
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE DOUBLE
|
|
VARIABLE_COMMENT Extra cost added to TABLE and INDEX scans to get optimizer to prefer index lookups
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 100000000
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME OPTIMIZER_SEARCH_DEPTH
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT 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
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 62
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME OPTIMIZER_SELECTIVITY_SAMPLING_LIMIT
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Controls number of record samples to check condition selectivity
|
|
NUMERIC_MIN_VALUE 10
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME OPTIMIZER_SWITCH
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE FLAGSET
|
|
VARIABLE_COMMENT Fine-tune the optimizer behavior
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST index_merge,index_merge_union,index_merge_sort_union,index_merge_intersection,index_merge_sort_intersection,index_condition_pushdown,derived_merge,derived_with_keys,firstmatch,loosescan,duplicateweedout,materialization,in_to_exists,semijoin,partial_match_rowid_merge,partial_match_table_scan,subquery_cache,mrr,mrr_cost_based,mrr_sort_keys,outer_join_with_cache,semijoin_with_cache,join_cache_incremental,join_cache_hashed,join_cache_bka,optimize_join_buffer_size,table_elimination,extended_keys,exists_to_in,orderby_uses_equalities,condition_pushdown_for_derived,split_materialized,condition_pushdown_for_subquery,rowid_filter,condition_pushdown_from_having,not_null_range_scan,hash_join_cardinality,cset_narrowing,sargable_casefold,default
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME OPTIMIZER_TRACE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE FLAGSET
|
|
VARIABLE_COMMENT Controls tracing of the Optimizer: optimizer_trace=option=val[,option=val...], where option is one of {enabled} and val is one of {on, off, default}
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST enabled,default
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME OPTIMIZER_TRACE_MAX_MEM_SIZE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Maximum allowed size of an optimizer trace
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME OPTIMIZER_USE_CONDITION_SELECTIVITY
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Controls selectivity of which conditions the optimizer takes into account to calculate cardinality of a partial join when it searches for the best execution plan Meaning: 1 - use selectivity of index backed range conditions to calculate the cardinality of a partial join if the last joined table is accessed by full table scan or an index scan, 2 - use selectivity of index backed range conditions to calculate the cardinality of a partial join in any case, 3 - additionally always use selectivity of range conditions that are not backed by any index to calculate the cardinality of a partial join, 4 - use histograms to calculate selectivity of range conditions that are not backed by any index to calculate the cardinality of a partial join. 5 - additionally use selectivity of certain non-range predicates calculated on record samples
|
|
NUMERIC_MIN_VALUE 1
|
|
NUMERIC_MAX_VALUE 5
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME OPTIMIZER_WHERE_COST
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE DOUBLE
|
|
VARIABLE_COMMENT Cost of checking the row against the WHERE clause. Increasing this will have the optimizer to prefer plans with less row combinations
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 100000
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Enable the performance schema
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_ACCOUNTS_SIZE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT
|
|
VARIABLE_COMMENT Maximum number of instrumented user@host accounts. Use 0 to disable, -1 for automated sizing
|
|
NUMERIC_MIN_VALUE -1
|
|
NUMERIC_MAX_VALUE 1048576
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_DIGESTS_SIZE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT
|
|
VARIABLE_COMMENT Size of the statement digest. Use 0 to disable, -1 for automated sizing
|
|
NUMERIC_MIN_VALUE -1
|
|
NUMERIC_MAX_VALUE 1048576
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_EVENTS_STAGES_HISTORY_LONG_SIZE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT
|
|
VARIABLE_COMMENT Number of rows in EVENTS_STAGES_HISTORY_LONG. Use 0 to disable, -1 for automated sizing
|
|
NUMERIC_MIN_VALUE -1
|
|
NUMERIC_MAX_VALUE 1048576
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_EVENTS_STAGES_HISTORY_SIZE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT
|
|
VARIABLE_COMMENT Number of rows per thread in EVENTS_STAGES_HISTORY. Use 0 to disable, -1 for automated sizing
|
|
NUMERIC_MIN_VALUE -1
|
|
NUMERIC_MAX_VALUE 1024
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_EVENTS_STATEMENTS_HISTORY_LONG_SIZE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT
|
|
VARIABLE_COMMENT Number of rows in EVENTS_STATEMENTS_HISTORY_LONG. Use 0 to disable, -1 for automated sizing
|
|
NUMERIC_MIN_VALUE -1
|
|
NUMERIC_MAX_VALUE 1048576
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_EVENTS_STATEMENTS_HISTORY_SIZE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT
|
|
VARIABLE_COMMENT Number of rows per thread in EVENTS_STATEMENTS_HISTORY. Use 0 to disable, -1 for automated sizing
|
|
NUMERIC_MIN_VALUE -1
|
|
NUMERIC_MAX_VALUE 1024
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_EVENTS_TRANSACTIONS_HISTORY_LONG_SIZE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT
|
|
VARIABLE_COMMENT Number of rows in EVENTS_TRANSACTIONS_HISTORY_LONG. Use 0 to disable, -1 for automated sizing
|
|
NUMERIC_MIN_VALUE -1
|
|
NUMERIC_MAX_VALUE 1048576
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_EVENTS_TRANSACTIONS_HISTORY_SIZE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT
|
|
VARIABLE_COMMENT Number of rows per thread in EVENTS_TRANSACTIONS_HISTORY. Use 0 to disable, -1 for automated sizing
|
|
NUMERIC_MIN_VALUE -1
|
|
NUMERIC_MAX_VALUE 1024
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_EVENTS_WAITS_HISTORY_LONG_SIZE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT
|
|
VARIABLE_COMMENT Number of rows in EVENTS_WAITS_HISTORY_LONG. Use 0 to disable, -1 for automated sizing
|
|
NUMERIC_MIN_VALUE -1
|
|
NUMERIC_MAX_VALUE 1048576
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_EVENTS_WAITS_HISTORY_SIZE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT
|
|
VARIABLE_COMMENT Number of rows per thread in EVENTS_WAITS_HISTORY. Use 0 to disable, -1 for automated sizing
|
|
NUMERIC_MIN_VALUE -1
|
|
NUMERIC_MAX_VALUE 1024
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_HOSTS_SIZE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT
|
|
VARIABLE_COMMENT Maximum number of instrumented hosts. Use 0 to disable, -1 for automated sizing
|
|
NUMERIC_MIN_VALUE -1
|
|
NUMERIC_MAX_VALUE 1048576
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_MAX_COND_CLASSES
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Maximum number of condition instruments
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 256
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_MAX_COND_INSTANCES
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT
|
|
VARIABLE_COMMENT Maximum number of instrumented condition objects. Use 0 to disable, -1 for automated sizing
|
|
NUMERIC_MIN_VALUE -1
|
|
NUMERIC_MAX_VALUE 1048576
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_MAX_DIGEST_LENGTH
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT
|
|
VARIABLE_COMMENT Maximum length considered for digest text, when stored in performance_schema tables
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 1048576
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_MAX_FILE_CLASSES
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Maximum number of file instruments
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 256
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_MAX_FILE_HANDLES
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Maximum number of opened instrumented files
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 1048576
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_MAX_FILE_INSTANCES
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT
|
|
VARIABLE_COMMENT Maximum number of instrumented files. Use 0 to disable, -1 for automated sizing
|
|
NUMERIC_MIN_VALUE -1
|
|
NUMERIC_MAX_VALUE 1048576
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_MAX_INDEX_STAT
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT
|
|
VARIABLE_COMMENT Maximum number of index statistics for instrumented tables. Use 0 to disable, -1 for automated scaling
|
|
NUMERIC_MIN_VALUE -1
|
|
NUMERIC_MAX_VALUE 1048576
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_MAX_MEMORY_CLASSES
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Maximum number of memory pool instruments
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 1024
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_MAX_METADATA_LOCKS
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT
|
|
VARIABLE_COMMENT Maximum number of metadata locks. Use 0 to disable, -1 for automated scaling
|
|
NUMERIC_MIN_VALUE -1
|
|
NUMERIC_MAX_VALUE 104857600
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_MAX_MUTEX_CLASSES
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Maximum number of mutex instruments
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 256
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_MAX_MUTEX_INSTANCES
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT
|
|
VARIABLE_COMMENT Maximum number of instrumented MUTEX objects. Use 0 to disable, -1 for automated sizing
|
|
NUMERIC_MIN_VALUE -1
|
|
NUMERIC_MAX_VALUE 104857600
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_MAX_PREPARED_STATEMENTS_INSTANCES
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT
|
|
VARIABLE_COMMENT Maximum number of instrumented prepared statements. Use 0 to disable, -1 for automated scaling
|
|
NUMERIC_MIN_VALUE -1
|
|
NUMERIC_MAX_VALUE 1048576
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_MAX_PROGRAM_INSTANCES
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT
|
|
VARIABLE_COMMENT Maximum number of instrumented programs. Use 0 to disable, -1 for automated scaling
|
|
NUMERIC_MIN_VALUE -1
|
|
NUMERIC_MAX_VALUE 1048576
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_MAX_RWLOCK_CLASSES
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Maximum number of rwlock instruments
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 256
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_MAX_RWLOCK_INSTANCES
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT
|
|
VARIABLE_COMMENT Maximum number of instrumented RWLOCK objects. Use 0 to disable, -1 for automated sizing
|
|
NUMERIC_MIN_VALUE -1
|
|
NUMERIC_MAX_VALUE 104857600
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_MAX_SOCKET_CLASSES
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Maximum number of socket instruments
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 256
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_MAX_SOCKET_INSTANCES
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT
|
|
VARIABLE_COMMENT Maximum number of opened instrumented sockets. Use 0 to disable, -1 for automated sizing
|
|
NUMERIC_MIN_VALUE -1
|
|
NUMERIC_MAX_VALUE 1048576
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_MAX_SQL_TEXT_LENGTH
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT
|
|
VARIABLE_COMMENT Maximum length of displayed sql text
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 1048576
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_MAX_STAGE_CLASSES
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Maximum number of stage instruments
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 256
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_MAX_STATEMENT_CLASSES
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Maximum number of statement instruments
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 256
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_MAX_STATEMENT_STACK
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Number of rows per thread in EVENTS_STATEMENTS_CURRENT
|
|
NUMERIC_MIN_VALUE 1
|
|
NUMERIC_MAX_VALUE 256
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_MAX_TABLE_HANDLES
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT
|
|
VARIABLE_COMMENT Maximum number of opened instrumented tables. Use 0 to disable, -1 for automated sizing
|
|
NUMERIC_MIN_VALUE -1
|
|
NUMERIC_MAX_VALUE 1048576
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_MAX_TABLE_INSTANCES
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT
|
|
VARIABLE_COMMENT Maximum number of instrumented tables. Use 0 to disable, -1 for automated sizing
|
|
NUMERIC_MIN_VALUE -1
|
|
NUMERIC_MAX_VALUE 1048576
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_MAX_TABLE_LOCK_STAT
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT
|
|
VARIABLE_COMMENT Maximum number of lock statistics for instrumented tables. Use 0 to disable, -1 for automated scaling
|
|
NUMERIC_MIN_VALUE -1
|
|
NUMERIC_MAX_VALUE 1048576
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_MAX_THREAD_CLASSES
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Maximum number of thread instruments
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 256
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_MAX_THREAD_INSTANCES
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT
|
|
VARIABLE_COMMENT Maximum number of instrumented threads. Use 0 to disable, -1 for automated sizing
|
|
NUMERIC_MIN_VALUE -1
|
|
NUMERIC_MAX_VALUE 1048576
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_SESSION_CONNECT_ATTRS_SIZE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT
|
|
VARIABLE_COMMENT Size of session attribute string buffer per thread. Use 0 to disable, -1 for automated sizing
|
|
NUMERIC_MIN_VALUE -1
|
|
NUMERIC_MAX_VALUE 1048576
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_SETUP_ACTORS_SIZE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT
|
|
VARIABLE_COMMENT Maximum number of rows in SETUP_ACTORS
|
|
NUMERIC_MIN_VALUE -1
|
|
NUMERIC_MAX_VALUE 1024
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_SETUP_OBJECTS_SIZE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT
|
|
VARIABLE_COMMENT Maximum number of rows in SETUP_OBJECTS
|
|
NUMERIC_MIN_VALUE -1
|
|
NUMERIC_MAX_VALUE 1048576
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PERFORMANCE_SCHEMA_USERS_SIZE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT
|
|
VARIABLE_COMMENT Maximum number of instrumented users. Use 0 to disable, -1 for automated sizing
|
|
NUMERIC_MIN_VALUE -1
|
|
NUMERIC_MAX_VALUE 1048576
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PID_FILE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT Pid file used by mariadbd-safe
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PLUGIN_DIR
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT Directory for plugins
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PLUGIN_MATURITY
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE ENUM
|
|
VARIABLE_COMMENT The lowest desirable plugin maturity. Plugins less mature than that will not be installed or loaded
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST unknown,experimental,alpha,beta,gamma,stable
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PORT
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE INT UNSIGNED
|
|
VARIABLE_COMMENT Port number to use for connection or 0 to default to, my.cnf, $MYSQL_TCP_PORT, /etc/services, built-in default (3306), whatever comes first
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 65535
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PRELOAD_BUFFER_SIZE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT The size of the buffer that is allocated when preloading indexes
|
|
NUMERIC_MIN_VALUE 1024
|
|
NUMERIC_MAX_VALUE 1073741824
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PROFILING
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT If set to 1 (0 is default), statement profiling will be enabled. See SHOW PROFILES and SHOW PROFILE
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME PROFILING_HISTORY_SIZE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Number of statements about which profiling information is maintained. If set to 0, no profiles are stored. See SHOW PROFILES
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 100
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PROGRESS_REPORT_TIME
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Seconds between sending progress reports to the client for time-consuming statements. Set to 0 to disable progress reporting
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PROTOCOL_VERSION
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE INT UNSIGNED
|
|
VARIABLE_COMMENT The version of the client/server protocol used by the MariaDB server
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME PROXY_PROTOCOL_NETWORKS
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT Enable proxy protocol for these source networks. The syntax is a comma separated list of IPv4 and IPv6 networks. If the network doesn't contain mask, it is considered to be a single host. "*" represents all networks and must be the only directive on the line. String "localhost" represents non-TCP local connections (Unix domain socket, Windows named pipe or shared memory)
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME PROXY_USER
|
|
VARIABLE_SCOPE SESSION ONLY
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT The proxy user account name used when logging in
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME PSEUDO_SLAVE_MODE
|
|
VARIABLE_SCOPE SESSION ONLY
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT 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
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME PSEUDO_THREAD_ID
|
|
VARIABLE_SCOPE SESSION ONLY
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT This variable is for internal server use
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME QUERY_ALLOC_BLOCK_SIZE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Allocation block size for query parsing and execution
|
|
NUMERIC_MIN_VALUE 1024
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 1024
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME QUERY_CACHE_LIMIT
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Don't cache results that are bigger than this
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME QUERY_CACHE_MIN_RES_UNIT
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT The minimum size for blocks allocated by the query cache
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 8
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME QUERY_CACHE_SIZE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT The memory allocated to store results from old queries
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 1024
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME QUERY_CACHE_STRIP_COMMENTS
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Strip all comments from a query before storing it in the query cache
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME QUERY_CACHE_TYPE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE ENUM
|
|
VARIABLE_COMMENT OFF = Don't cache or retrieve results. ON = Cache all results except SELECT SQL_NO_CACHE ... queries. DEMAND = Cache only SELECT SQL_CACHE ... queries
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON,DEMAND
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME QUERY_CACHE_WLOCK_INVALIDATE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Invalidate queries in query cache on LOCK for write
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME QUERY_PREALLOC_SIZE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Persistent buffer for query parsing and execution
|
|
NUMERIC_MIN_VALUE 1024
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 1024
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME RAND_SEED1
|
|
VARIABLE_SCOPE SESSION ONLY
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Sets the internal state of the RAND() generator for replication purposes
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME RAND_SEED2
|
|
VARIABLE_SCOPE SESSION ONLY
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Sets the internal state of the RAND() generator for replication purposes
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME RANGE_ALLOC_BLOCK_SIZE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Allocation block size for storing ranges during optimization
|
|
NUMERIC_MIN_VALUE 4096
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 1024
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME READ_BUFFER_SIZE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT 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
|
|
NUMERIC_MIN_VALUE 8192
|
|
NUMERIC_MAX_VALUE 2147483647
|
|
NUMERIC_BLOCK_SIZE 4096
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME READ_ONLY
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE ENUM
|
|
VARIABLE_COMMENT Do not allow changes to non-temporary tables. Options are:OFF changes allowed. ON Disallow changes for users without the READ ONLY ADMIN privilege. NO_LOCK Additionally disallows LOCK TABLES and SELECT IN SHARE MODE. NO_LOCK_NO_ADMIN Disallows also for users with READ_ONLY ADMIN privilege. Replication (slave) threads are not affected by this option
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON,NO_LOCK,NO_LOCK_NO_ADMIN,FALSE,TRUE
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME READ_RND_BUFFER_SIZE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT When reading rows in sorted order after a sort, the rows are read through this buffer to avoid a disk seeks
|
|
NUMERIC_MIN_VALUE 1
|
|
NUMERIC_MAX_VALUE 2147483647
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME REQUIRE_SECURE_TRANSPORT
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT When this option is enabled, connections attempted using insecure transport will be rejected. Secure transports are SSL/TLS, Unix sockets or named pipes
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME ROWID_MERGE_BUFF_SIZE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT The size of the buffers used [NOT] IN evaluation via partial matching
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 9223372036854775807
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME SECURE_AUTH
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Disallow authentication for accounts that have old (pre-4.1) passwords
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME SECURE_FILE_PRIV
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT Limit LOAD DATA, SELECT ... OUTFILE, and LOAD_FILE() to files within specified directory
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME SECURE_TIMESTAMP
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE ENUM
|
|
VARIABLE_COMMENT Restricts direct setting of a session timestamp. Possible levels are: YES - timestamp cannot deviate from the system clock, REPLICATION - replication thread can adjust timestamp to match the master's, SUPER - a user with this privilege and a replication thread can adjust timestamp, NO - historical behavior, anyone can modify session timestamp
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NO,SUPER,REPLICATION,YES
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME SERVER_ID
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Uniquely identifies the server instance in the community of replication partners
|
|
NUMERIC_MIN_VALUE 1
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME SERVER_UID
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT Automatically calculated server unique id hash
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME SKIP_EXTERNAL_LOCKING
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Don't use system (external) locking
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME SKIP_GRANT_TABLES
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Start without grant tables. This gives all users FULL ACCESS to all tables
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME SKIP_NAME_RESOLVE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Don't resolve hostnames. All hostnames are IP's or 'localhost'
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME SKIP_NETWORKING
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Don't allow connection with TCP/IP
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME SKIP_REPLICATION
|
|
VARIABLE_SCOPE SESSION ONLY
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Changes are logged into the binary log with the @@skip_replication flag set. Such events will not be replicated by slaves that run with --replicate-events-marked-for-skip set different from its default of REPLICATE. See Selectively skipping replication of binlog events for more information
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME SKIP_SHOW_DATABASE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Don't allow 'SHOW DATABASE' commands
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME SLAVE_COMPRESSED_PROTOCOL
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Use compression on master/slave protocol
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME SLAVE_CONNECTIONS_NEEDED_FOR_PURGE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE INT UNSIGNED
|
|
VARIABLE_COMMENT Minimum number of connected slaves required for automatic binary log purge with max_binlog_total_size, binlog_expire_logs_seconds or binlog_expire_logs_days. Default is 0 when Galera is enabled and 1 otherwise
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME SLAVE_MAX_ALLOWED_PACKET
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT The maximum packet length to sent successfully from the master to slave
|
|
NUMERIC_MIN_VALUE 1024
|
|
NUMERIC_MAX_VALUE 1073741824
|
|
NUMERIC_BLOCK_SIZE 1024
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME SLOW_LAUNCH_TIME
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT If creating the thread takes longer than this value (in seconds), the Slow_launch_threads counter will be incremented
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 31536000
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME SLOW_QUERY_LOG
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Alias for log_slow_query. 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
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME SLOW_QUERY_LOG_FILE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT Alias for log_slow_query_file. Log slow queries to given log file. Defaults logging to 'hostname'-slow.log. Must be enabled to activate other slow log options
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME SOCKET
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT Socket file to use for connection
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME SORT_BUFFER_SIZE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Each thread that needs to do a sort allocates a buffer of this size
|
|
NUMERIC_MIN_VALUE 1024
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME SQL_AUTO_IS_NULL
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT If set to 1, the query SELECT * FROM table_name WHERE auto_increment_column IS NULL will return an auto-increment that has just been successfully inserted, the same as the LAST_INSERT_ID() function. Some ODBC programs make use of this IS NULL comparison
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME SQL_BIG_SELECTS
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT If set to 0, MariaDB will not perform large SELECTs. See max_join_size for details. If max_join_size is set to anything but DEFAULT, sql_big_selects is automatically set to 0. If sql_big_selects is again set, max_join_size will be ignored
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME SQL_BUFFER_RESULT
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT If set to 1 (0 is default), results from SELECT statements are always placed into temporary tables. This can help the server when it takes a long time to send the results to the client by allowing the table locks to be freed early
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME SQL_IF_EXISTS
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT If set to 1 adds an implicate IF EXISTS to ALTER, RENAME and DROP of TABLES, VIEWS, FUNCTIONS and PACKAGES
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME SQL_LOG_BIN
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT If set to 0 (1 is the default), no logging to the binary log is done for the client. Only clients with the SUPER privilege can update this variable. Can have unintended consequences if set globally, see SET SQL_LOG_BIN. Starting MariaDB 10.1.7, this variable does not affect the replication of events in a Galera cluster
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME SQL_LOG_OFF
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT If set to 1 (0 is the default), no logging to the general query log is done for the client. Only clients with the SUPER privilege can update this variable
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME SQL_MODE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE SET
|
|
VARIABLE_COMMENT Sets the sql mode
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST REAL_AS_FLOAT,PIPES_AS_CONCAT,ANSI_QUOTES,IGNORE_SPACE,IGNORE_BAD_TABLE_OPTIONS,ONLY_FULL_GROUP_BY,NO_UNSIGNED_SUBTRACTION,NO_DIR_IN_CREATE,POSTGRESQL,ORACLE,MSSQL,DB2,MAXDB,NO_KEY_OPTIONS,NO_TABLE_OPTIONS,NO_FIELD_OPTIONS,MYSQL323,MYSQL40,ANSI,NO_AUTO_VALUE_ON_ZERO,NO_BACKSLASH_ESCAPES,STRICT_TRANS_TABLES,STRICT_ALL_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ALLOW_INVALID_DATES,ERROR_FOR_DIVISION_BY_ZERO,TRADITIONAL,NO_AUTO_CREATE_USER,HIGH_NOT_PRECEDENCE,NO_ENGINE_SUBSTITUTION,PAD_CHAR_TO_FULL_LENGTH,EMPTY_STRING_IS_NULL,SIMULTANEOUS_ASSIGNMENT,TIME_ROUND_FRACTIONAL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME SQL_NOTES
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT If set to 1, the default, warning_count is incremented each time a Note warning is encountered. If set to 0, Note warnings are not recorded. mysqldump has outputs to set this variable to 0 so that no unnecessary increments occur when data is reloaded. See also note_verbosity, which allows one to define with notes are sent
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME SQL_QUOTE_SHOW_CREATE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT If set to 1, the default, the server will quote identifiers for SHOW CREATE DATABASE, SHOW CREATE TABLE and SHOW CREATE VIEW statements. Quoting is disabled if set to 0. Enable to ensure replications works when identifiers require quoting
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME SQL_SAFE_UPDATES
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT If set to 1, UPDATEs and DELETEs need either a key in the WHERE clause, or a LIMIT clause, or else they will aborted. Prevents the common mistake of accidentally deleting or updating every row in a table
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME SQL_SELECT_LIMIT
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT The maximum number of rows to return from SELECT statements
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME SQL_WARNINGS
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT If set to 1, single-row INSERTs will produce a string containing warning information if a warning occurs
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME SSL_CA
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT CA file in PEM format (check OpenSSL docs, implies --ssl)
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME SSL_CAPATH
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT CA directory (check OpenSSL docs, implies --ssl)
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME SSL_CERT
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT X509 cert in PEM format (implies --ssl)
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME SSL_CIPHER
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT SSL cipher to use (implies --ssl)
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME SSL_CRL
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT CRL file in PEM format (check OpenSSL docs, implies --ssl)
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME SSL_CRLPATH
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT CRL directory (check OpenSSL docs, implies --ssl)
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME SSL_KEY
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT X509 key in PEM format (implies --ssl)
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME SSL_PASSPHRASE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT SSL certificate key passphrase
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME STANDARD_COMPLIANT_CTE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Allow only CTEs compliant to SQL standard
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME STORED_PROGRAM_CACHE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT The soft upper limit for number of cached stored routines for one connection
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 524288
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME STRICT_PASSWORD_VALIDATION
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT When password validation plugins are enabled, reject passwords that cannot be validated (passwords specified as a hash)
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME SYNC_BINLOG
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE INT UNSIGNED
|
|
VARIABLE_COMMENT Synchronously flush binary log to disk after every #th event. Use 0 (default) to disable synchronous flushing
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME SYNC_FRM
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Sync .frm files to disk on creation
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME SYNC_MASTER_INFO
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE INT UNSIGNED
|
|
VARIABLE_COMMENT Synchronously flush master info to disk after every #th event. Use 0 to disable synchronous flushing
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 4294967295
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME SYSTEM_TIME_ZONE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT The server system time zone
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME SYSTEM_VERSIONING_ALTER_HISTORY
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE ENUM
|
|
VARIABLE_COMMENT Versioning ALTER TABLE mode. ERROR: Fail ALTER with error; KEEP: Keep historical system rows and subject them to ALTER
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST ERROR,KEEP
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME SYSTEM_VERSIONING_ASOF
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT Default value for the FOR SYSTEM_TIME AS OF clause
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME SYSTEM_VERSIONING_INSERT_HISTORY
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Allows direct inserts into ROW_START and ROW_END columns if secure_timestamp allows changing @@timestamp
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME TABLE_DEFINITION_CACHE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT The number of cached table definitions
|
|
NUMERIC_MIN_VALUE 400
|
|
NUMERIC_MAX_VALUE 2097152
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME TABLE_OPEN_CACHE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT The number of cached open tables
|
|
NUMERIC_MIN_VALUE 10
|
|
NUMERIC_MAX_VALUE 1048576
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME TABLE_OPEN_CACHE_INSTANCES
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE INT UNSIGNED
|
|
VARIABLE_COMMENT Maximum number of table cache instances
|
|
NUMERIC_MIN_VALUE 1
|
|
NUMERIC_MAX_VALUE 64
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME TCP_KEEPALIVE_INTERVAL
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE INT
|
|
VARIABLE_COMMENT The interval, in seconds, between when successive keep-alive packets are sent if no acknowledgement is received. If set to 0, system dependent default is used
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 2147483
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME TCP_KEEPALIVE_PROBES
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE INT
|
|
VARIABLE_COMMENT The number of unacknowledged probes to send before considering the connection dead and notifying the application layer. If set to 0, system dependent default is used
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 2147483
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME TCP_KEEPALIVE_TIME
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE INT
|
|
VARIABLE_COMMENT Timeout, in seconds, with no activity until the first TCP keep-alive packet is sent. If set to 0, system dependent default is used
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 2147483
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME TCP_NODELAY
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Set option TCP_NODELAY (disable Nagle's algorithm) on socket
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME THREAD_CACHE_SIZE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT How many threads we should keep in a cache for reuse. These are freed after 5 minutes of idle time
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 16384
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME THREAD_HANDLING
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE ENUM
|
|
VARIABLE_COMMENT Define threads usage for handling queries
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST one-thread-per-connection,no-threads
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME THREAD_STACK
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT The stack size for each thread
|
|
NUMERIC_MIN_VALUE 131072
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 1024
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME TIME_ZONE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT The current time zone, used to initialize the time zone for a client when it connects. Set to SYSTEM by default, in which the client uses the system time zone value
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME TLS_VERSION
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE SET
|
|
VARIABLE_COMMENT TLS protocol version for secure connections
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST TLSv1.0,TLSv1.1,TLSv1.2,TLSv1.3
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME TMPDIR
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT Path for temporary files. Files that are created in background for binlogging by user threads are placed in a separate location (see `binlog_large_commit_threshold` option). Several paths may be specified, separated by a colon (:), in this case they are used in a round-robin fashion
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME TMP_DISK_TABLE_SIZE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Max size for data for an internal temporary on-disk MyISAM or Aria table
|
|
NUMERIC_MIN_VALUE 1024
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME TMP_MEMORY_TABLE_SIZE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT If an internal in-memory temporary table exceeds this size, MariaDB will automatically convert it to an on-disk MyISAM or Aria table. Same as tmp_table_size
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 16384
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME TMP_TABLE_SIZE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Alias for tmp_memory_table_size. If an internal in-memory temporary table exceeds this size, MariaDB will automatically convert it to an on-disk MyISAM or Aria table
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 16384
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME TRANSACTION_ALLOC_BLOCK_SIZE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Allocation block size for transactions to be stored in binary log
|
|
NUMERIC_MIN_VALUE 1024
|
|
NUMERIC_MAX_VALUE 134217728
|
|
NUMERIC_BLOCK_SIZE 1024
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME TRANSACTION_ISOLATION
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE ENUM
|
|
VARIABLE_COMMENT Default transaction isolation level
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST READ-UNCOMMITTED,READ-COMMITTED,REPEATABLE-READ,SERIALIZABLE
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME TRANSACTION_PREALLOC_SIZE
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Persistent buffer for transactions to be stored in binary log
|
|
NUMERIC_MIN_VALUE 1024
|
|
NUMERIC_MAX_VALUE 134217728
|
|
NUMERIC_BLOCK_SIZE 1024
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME TRANSACTION_READ_ONLY
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Default transaction access mode. If set to OFF, the default, access is read/write. If set to ON, access is read-only. The SET TRANSACTION statement can also change the value of this variable. See SET TRANSACTION and START TRANSACTION
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME TX_ISOLATION
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE ENUM
|
|
VARIABLE_COMMENT Default transaction isolation level
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST READ-UNCOMMITTED,READ-COMMITTED,REPEATABLE-READ,SERIALIZABLE
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME TX_READ_ONLY
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Default transaction access mode. If set to OFF, the default, access is read/write. If set to ON, access is read-only. The SET TRANSACTION statement can also change the value of this variable. See SET TRANSACTION and START TRANSACTION
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME UNIQUE_CHECKS
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT If set to 1, the default, secondary indexes in InnoDB tables are performed. If set to 0, storage engines can (but are not required to) assume that duplicate keys are not present in input data. Set to 0 to speed up imports of large tables to InnoDB. The storage engine will still issue a duplicate key error if it detects one, even if set to 0
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME UPDATABLE_VIEWS_WITH_LIMIT
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE ENUM
|
|
VARIABLE_COMMENT 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)
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NO,YES
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME USERSTAT
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BOOLEAN
|
|
VARIABLE_COMMENT Enables statistics gathering for USER_STATISTICS, CLIENT_STATISTICS, INDEX_STATISTICS and TABLE_STATISTICS tables in the INFORMATION_SCHEMA
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST OFF,ON
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT OPTIONAL
|
|
VARIABLE_NAME USE_STAT_TABLES
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE ENUM
|
|
VARIABLE_COMMENT Specifies how to use system statistics tables
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NEVER,COMPLEMENTARY,PREFERABLY,COMPLEMENTARY_FOR_QUERIES,PREFERABLY_FOR_QUERIES
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME VERSION
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT Server version number. It may also include a suffix with configuration or build information. -debug indicates debugging support was enabled on the server, and -log indicates at least one of the binary log, general log or slow query log are enabled, for example 10.1.1-MariaDB-mariadb1precise-log
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME VERSION_COMMENT
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT Value of the COMPILATION_COMMENT option specified by CMake when building MariaDB, for example mariadb.org binary distribution
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME VERSION_COMPILE_MACHINE
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT The machine type or architecture MariaDB was built on, for example i686
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME VERSION_COMPILE_OS
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT Operating system that MariaDB was built on, for example debian-linux-gnu
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME VERSION_MALLOC_LIBRARY
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT Version of the used malloc library
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME VERSION_SOURCE_REVISION
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT Source control revision id for MariaDB source code
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME VERSION_SSL_LIBRARY
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE VARCHAR
|
|
VARIABLE_COMMENT Version of the used SSL library
|
|
NUMERIC_MIN_VALUE NULL
|
|
NUMERIC_MAX_VALUE NULL
|
|
NUMERIC_BLOCK_SIZE NULL
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
VARIABLE_NAME WAIT_TIMEOUT
|
|
VARIABLE_SCOPE SESSION
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT The number of seconds the server waits for activity on a connection before closing it
|
|
NUMERIC_MIN_VALUE 1
|
|
NUMERIC_MAX_VALUE 31536000
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY NO
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
VARIABLE_NAME WARNING_COUNT
|
|
VARIABLE_SCOPE SESSION ONLY
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT The number of errors, warnings, and notes that resulted from the last statement that generated messages
|
|
NUMERIC_MIN_VALUE 0
|
|
NUMERIC_MAX_VALUE 18446744073709551615
|
|
NUMERIC_BLOCK_SIZE 1
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT NULL
|
|
select VARIABLE_NAME, GLOBAL_VALUE_ORIGIN, VARIABLE_SCOPE, VARIABLE_TYPE, VARIABLE_COMMENT, ENUM_VALUE_LIST, READ_ONLY, COMMAND_LINE_ARGUMENT
|
|
from information_schema.system_variables
|
|
where variable_name in (
|
|
'log_tc_size'
|
|
)
|
|
order by variable_name;
|
|
VARIABLE_NAME LOG_TC_SIZE
|
|
GLOBAL_VALUE_ORIGIN AUTO
|
|
VARIABLE_SCOPE GLOBAL
|
|
VARIABLE_TYPE BIGINT UNSIGNED
|
|
VARIABLE_COMMENT Size of transaction coordinator log
|
|
ENUM_VALUE_LIST NULL
|
|
READ_ONLY YES
|
|
COMMAND_LINE_ARGUMENT REQUIRED
|
|
set global div_precision_increment=default;
|