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SELECT * FROM `SYSTEM_VARIABLES` ORDER BY `DEFAULT_VALUE` DESC
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VARIABLE_NAME SESSION_VALUE GLOBAL_VALUE GLOBAL_VALUE_ORIGIN DEFAULT_VALUE 递减 递增 1 VARIABLE_SCOPE VARIABLE_TYPE VARIABLE_COMMENT NUMERIC_MIN_VALUE NUMERIC_MAX_VALUE NUMERIC_BLOCK_SIZE ENUM_VALUE_LIST READ_ONLY COMMAND_LINE_ARGUMENT
INNODB_COMPRESSION_ALGORITHM NULL zlib COMPILE-TIME zlib GLOBAL ENUM Compression algorithm used on page compression. On... NULL NULL NULL none,zlib,lz4,lzo,lzma,bzip2,snappy NO OPTIONAL
UPDATABLE_VIEWS_WITH_LIMIT YES YES COMPILE-TIME YES SESSION ENUM YES = Don't issue an error message (warning only) ... NULL NULL NULL NO,YES NO REQUIRED
THREAD_POOL_MODE NULL windows COMPILE-TIME windows GLOBAL ENUM Chose implementation of the threadpool NULL NULL NULL windows,generic YES REQUIRED
COLLATION_DATABASE utf8_general_ci utf8mb4_general_ci COMPILE-TIME utf8mb4_general_ci SESSION ENUM The collation of the database character set NULL NULL NULL NULL NO NULL
COLLATION_SERVER utf8mb4_general_ci utf8mb4_general_ci COMPILE-TIME utf8mb4_general_ci SESSION ENUM The server default collation NULL NULL NULL NULL NO NULL
COLLATION_CONNECTION utf8mb4_unicode_ci utf8mb4_general_ci COMPILE-TIME utf8mb4_general_ci SESSION ENUM The collation of the connection character set NULL NULL NULL NULL NO NULL
CHARACTER_SET_SERVER utf8mb4 utf8mb4 COMPILE-TIME utf8mb4 SESSION ENUM The default character set NULL NULL NULL NULL NO NULL
CHARACTER_SET_CONNECTION utf8mb4 utf8mb4 COMPILE-TIME utf8mb4 SESSION ENUM The character set used for literals that do not ha... NULL NULL NULL NULL NO NULL
CHARACTER_SET_RESULTS utf8mb4 utf8mb4 COMPILE-TIME utf8mb4 SESSION ENUM The character set used for returning query results... NULL NULL NULL NULL NO NULL
CHARACTER_SET_CLIENT utf8mb4 utf8mb4 COMPILE-TIME utf8mb4 SESSION ENUM The character set for statements that arrive from ... NULL NULL NULL NULL NO NULL
CHARACTER_SET_DATABASE utf8 utf8mb4 COMPILE-TIME utf8mb4 SESSION ENUM The character set used by the default database NULL NULL NULL NULL NO NULL
INNODB_FLUSH_METHOD NULL unbuffered COMPILE-TIME unbuffered GLOBAL ENUM With which method to flush data. NULL NULL NULL fsync,O_DSYNC,littlesync,nosync,O_DIRECT,O_DIRECT_... YES REQUIRED
TLS_VERSION NULL TLSv1.2,TLSv1.3 COMPILE-TIME TLSv1.2,TLSv1.3 GLOBAL SET TLS protocol version for secure connections. NULL NULL NULL TLSv1.0,TLSv1.1,TLSv1.2,TLSv1.3 YES REQUIRED
TIME_ZONE SYSTEM SYSTEM COMPILE-TIME SYSTEM SESSION VARCHAR The current time zone, used to initialize the time... NULL NULL NULL NULL NO NULL
SQL_MODE NO_ZERO_IN_DATE,NO_ZERO_DATE,NO_ENGINE_SUBSTITUTIO... NO_ZERO_IN_DATE,NO_ZERO_DATE,NO_ENGINE_SUBSTITUTIO... CONFIG STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_... SESSION SET Sets the sql mode NULL NULL NULL REAL_AS_FLOAT,PIPES_AS_CONCAT,ANSI_QUOTES,IGNORE_S... NO REQUIRED
SLAVE_EXEC_MODE NULL STRICT COMPILE-TIME STRICT GLOBAL ENUM How replication events should be executed. Legal v... NULL NULL NULL STRICT,IDEMPOTENT NO REQUIRED
LOG_SLOW_DISABLED_STATEMENTS sp sp COMPILE-TIME sp SESSION SET Don't log certain types of statements to slow log NULL NULL NULL admin,call,slave,sp NO REQUIRED
LOG_DISABLED_STATEMENTS sp sp COMPILE-TIME sp SESSION SET Don't log certain types of statements to general l... NULL NULL NULL slave,sp NO REQUIRED
REPLICATE_EVENTS_MARKED_FOR_SKIP NULL REPLICATE COMPILE-TIME REPLICATE GLOBAL ENUM Whether the slave should replicate events that wer... NULL NULL NULL REPLICATE,FILTER_ON_SLAVE,FILTER_ON_MASTER NO REQUIRED
TX_ISOLATION REPEATABLE-READ REPEATABLE-READ COMPILE-TIME REPEATABLE-READ SESSION ENUM Default transaction isolation level NULL NULL NULL READ-UNCOMMITTED,READ-COMMITTED,REPEATABLE-READ,SE... NO NULL
USE_STAT_TABLES PREFERABLY_FOR_QUERIES PREFERABLY_FOR_QUERIES COMPILE-TIME PREFERABLY_FOR_QUERIES SESSION ENUM Specifies how to use system statistics tables NULL NULL NULL NEVER,COMPLEMENTARY,PREFERABLY,COMPLEMENTARY_FOR_Q... NO REQUIRED
THREAD_HANDLING NULL pool-of-threads COMPILE-TIME pool-of-threads GLOBAL ENUM Define threads usage for handling queries NULL NULL NULL one-thread-per-connection,no-threads,pool-of-threa... YES REQUIRED
INNODB_BUFFER_POOL_LOAD_AT_STARTUP NULL ON COMPILE-TIME ON GLOBAL BOOLEAN Load the buffer pool from a file named @@innodb_bu... NULL NULL NULL OFF,ON YES REQUIRED
SYNC_FRM NULL ON COMPILE-TIME ON GLOBAL BOOLEAN Sync .frm files to disk on creation NULL NULL NULL OFF,ON NO OPTIONAL
AUTOMATIC_SP_PRIVILEGES NULL ON COMPILE-TIME ON GLOBAL BOOLEAN Creating and dropping stored procedures alters ACL... NULL NULL NULL OFF,ON NO OPTIONAL
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