关键字是指在数据库中有意义的字，通常是数据库内部使用， 不能用于命名用户的数据对象。 有的数据库还会详细划分，例如分为关键字，候选字，甚至更详细的分类。分类的标准例如有的是绝对不可以使用，有的通过一定手段例如添加双引号可以使用。

我们为了方便统一称之为关键字，通常用户编写的对象中使用关键字会造成错误或不确定的影响，为了避免这个问题，用户应该避免使用数据库的关键字(含保留字或其他保留别名等)。

这个系列主要整理了各大数据库的关键字，可以用于建库，建表，写存储过程，函数等场景避免冲突。最后会有个脚本工具用来检查是否使用关键字。
9de7bb31d0644e7393039222babfed10

欢迎收藏。

MySQL

ACCESSIBLE ACCOUNT ACTION ACTIVE ADD ADMIN AFTER AGAINST AGGREGATE ALGORITHM ALL ALTER ALWAYS ANALYSE ANALYZE AND ANY ARRAY AS ASC ASCII ASENSITIVE AT ATTRIBUTE AUTHENTICATION AUTOEXTEND_SIZE AUTO_INCREMENT AVG AVG_ROW_LENGTH BACKUP BEFORE BEGIN BETWEEN BIGINT BINARY BINLOG BIT BLOB BLOCK BOOL BOOLEAN BOTH BTREE BUCKETS BY BYTE CACHE CALL CASCADE CASCADED CASE CATALOG_NAME CHAIN CHALLENGE_RESPONSE CHANGE CHANGED CHANNEL CHAR CHARACTER CHARSET CHECK CHECKSUM CIPHER CLASS_ORIGIN CLIENT CLONE CLOSE COALESCE CODE COLLATE COLLATION COLUMN COLUMNS COLUMN_FORMAT COLUMN_NAME COMMENT COMMIT COMMITTED COMPACT COMPLETION COMPONENT COMPRESSED COMPRESSION CONCURRENT CONDITION CONNECTION CONSISTENT CONSTRAINT CONSTRAINT_CATALOG CONSTRAINT_NAME CONSTRAINT_SCHEMA CONTAINS CONTEXT CONTINUE CONVERT CPU CREATE CROSS CUBE CUME_DIST CURRENT CURRENT_DATE CURRENT_TIME CURRENT_TIMESTAMP CURRENT_USER CURSOR CURSOR_NAME DATA DATABASE DATABASES DATAFILE DATE DATETIME DAY DAY_HOUR DAY_MICROSECOND DAY_MINUTE DAY_SECOND DEALLOCATE DEC DECIMAL DECLARE DEFAULT DEFAULT_AUTH DEFINER DEFINITION DELAYED DELAY_KEY_WRITE DELETE DENSE_RANK DESC DESCRIBE DESCRIPTION DES_KEY_FILE DETERMINISTIC DIAGNOSTICS DIRECTORY DISABLE DISCARD DISK DISTINCT DISTINCTROW DIV DO DOUBLE DROP DUAL DUMPFILE DUPLICATE DYNAMIC EACH ELSE ELSEIF EMPTY ENABLE ENCLOSED ENCRYPTION END ENDS ENFORCED ENGINE ENGINES ENGINE_ATTRIBUTE ENUM ERROR ERRORS ESCAPE ESCAPED EVENT EVENTS EVERY EXCEPT EXCHANGE EXCLUDE EXECUTE EXISTS EXIT EXPANSION EXPIRE EXPLAIN EXPORT EXTENDED EXTENT_SIZE FACTOR FAILED_LOGIN_ATTEMPTS FALSE FAST FAULTS FETCH FIELDS FILE FILE_BLOCK_SIZE FILTER FINISH FIRST FIRST_VALUE FIXED FLOAT FLOAT4 FLOAT8 FLUSH FOLLOWING FOLLOWS FOR FORCE FOREIGN FORMAT FOUND FROM FULL FULLTEXT FUNCTION GENERAL GENERATED GEOMCOLLECTION GEOMETRY GEOMETRYCOLLECTION GET GET_FORMAT GET_MASTER_PUBLIC_KEY GET_SOURCE_PUBLIC_KEY GLOBAL GRANT GRANTS GROUP GROUPING GROUPS GROUP_REPLICATION GTID_ONLY HANDLER HASH HAVING HELP HIGH_PRIORITY HISTOGRAM HISTORY HOST HOSTS HOUR HOUR_MICROSECOND HOUR_MINUTE HOUR_SECOND IDENTIFIED IF IGNORE IGNORE_SERVER_IDS IMPORT IN INACTIVE INDEX INDEXES INFILE INITIAL INITIAL_SIZE INITIATE INNER INOUT INSENSITIVE INSERT INSERT_METHOD INSTALL INSTANCE INT INT1 INT2 INT3 INT4 INT8 INTEGER INTERSECT INTERVAL INTO INVISIBLE INVOKER IO IO_AFTER_GTIDS IO_BEFORE_GTIDS IO_THREAD IPC IS ISOLATION ISSUER ITERATE JOIN JSON JSON_TABLE JSON_VALUE KEY KEYRING KEYS KEY_BLOCK_SIZE KILL LAG LANGUAGE LAST LAST_VALUE LATERAL LEAD LEADING LEAVE LEAVES LEFT LESS LEVEL LIKE LIMIT LINEAR LINES LINESTRING LIST LOAD LOCAL LOCALTIME LOCALTIMESTAMP LOCK LOCKED LOCKS LOGFILE LOGS LONG LONGBLOB LONGTEXT LOOP LOW_PRIORITY MASTER MASTER_AUTO_POSITION MASTER_BIND MASTER_COMPRESSION_ALGORITHMS MASTER_CONNECT_RETRY MASTER_DELAY MASTER_HEARTBEAT_PERIOD MASTER_HOST MASTER_LOG_FILE MASTER_LOG_POS MASTER_PASSWORD MASTER_PORT MASTER_PUBLIC_KEY_PATH MASTER_RETRY_COUNT MASTER_SERVER_ID MASTER_SSL MASTER_SSL_CA MASTER_SSL_CAPATH MASTER_SSL_CERT MASTER_SSL_CIPHER MASTER_SSL_CRL MASTER_SSL_CRLPATH MASTER_SSL_KEY MASTER_SSL_VERIFY_SERVER_CERT MASTER_TLS_CIPHERSUITES MASTER_TLS_VERSION MASTER_USER MASTER_ZSTD_COMPRESSION_LEVEL MATCH MAXVALUE MAX_CONNECTIONS_PER_HOUR MAX_QUERIES_PER_HOUR MAX_ROWS MAX_SIZE MAX_UPDATES_PER_HOUR MAX_USER_CONNECTIONS MEDIUM MEDIUMBLOB MEDIUMINT MEDIUMTEXT MEMBER MEMORY MERGE MESSAGE_TEXT MICROSECOND MIDDLEINT MIGRATE MINUTE MINUTE_MICROSECOND MINUTE_SECOND MIN_ROWS MOD MODE MODIFIES MODIFY MONTH MULTILINESTRING MULTIPOINT MULTIPOLYGON MUTEX MYSQL_ERRNO NAME NAMES NATIONAL NATURAL NCHAR NDB NDBCLUSTER NESTED NETWORK_NAMESPACE NEVER NEW NEXT NO NODEGROUP NONE NOT NOWAIT NO_WAIT NO_WRITE_TO_BINLOG NTH_VALUE NTILE NULL NULLS NUMBER NUMERIC NVARCHAR OF OFF OFFSET OJ OLD ON ONE ONLY OPEN OPTIMIZE OPTIMIZER_COSTS OPTION OPTIONAL OPTIONALLY OPTIONS OR ORDER ORDINALITY ORGANIZATION OTHERS OUT OUTER OUTFILE OVER OWNER PACK_KEYS PAGE PARSER PARTIAL PARTITION PARTITIONING PARTITIONS PASSWORD PASSWORD_LOCK_TIME PATH PERCENT_RANK PERSIST PERSIST_ONLY PHASE PLUGIN PLUGINS PLUGIN_DIR POINT POLYGON PORT PRECEDES PRECEDING PRECISION PREPARE PRESERVE PREV PRIMARY PRIVILEGES PRIVILEGE_CHECKS_USER PROCEDURE PROCESS PROCESSLIST PROFILE PROFILES PROXY PURGE QUARTER QUERY QUICK RANDOM RANGE RANK READ READS READ_ONLY READ_WRITE REAL REBUILD RECOVER RECURSIVE REDOFILE REDO_BUFFER_SIZE REDUNDANT REFERENCE REFERENCES REGEXP REGISTRATION RELAY RELAYLOG RELAY_LOG_FILE RELAY_LOG_POS RELAY_THREAD RELEASE RELOAD REMOTE REMOVE RENAME REORGANIZE REPAIR REPEAT REPEATABLE REPLACE REPLICA REPLICAS REPLICATE_DO_DB REPLICATE_DO_TABLE REPLICATE_IGNORE_DB REPLICATE_IGNORE_TABLE REPLICATE_REWRITE_DB REPLICATE_WILD_DO_TABLE REPLICATE_WILD_IGNORE_TABLE REPLICATION REQUIRE REQUIRE_ROW_FORMAT RESET RESIGNAL RESOURCE RESPECT RESTART RESTORE RESTRICT RESUME RETAIN RETURN RETURNED_SQLSTATE RETURNING RETURNS REUSE REVERSE REVOKE RIGHT RLIKE ROLE ROLLBACK ROLLUP ROTATE ROUTINE ROW ROWS ROW_COUNT ROW_FORMAT ROW_NUMBER RTREE SAVEPOINT SCHEDULE SCHEMA SCHEMAS SCHEMA_NAME SECOND SECONDARY SECONDARY_ENGINE SECONDARY_ENGINE_ATTRIBUTE SECONDARY_LOAD SECONDARY_UNLOAD SECOND_MICROSECOND SECURITY SELECT SENSITIVE SEPARATOR SERIAL SERIALIZABLE SERVER SESSION SET SHARE SHOW SHUTDOWN SIGNAL SIGNED SIMPLE SKIP SLAVE SLOW SMALLINT SNAPSHOT SOCKET SOME SONAME SOUNDS SOURCE SOURCE_AUTO_POSITION SOURCE_BIND SOURCE_COMPRESSION_ALGORITHMS SOURCE_CONNECT_RETRY SOURCE_DELAY SOURCE_HEARTBEAT_PERIOD SOURCE_HOST SOURCE_LOG_FILE SOURCE_LOG_POS SOURCE_PASSWORD SOURCE_PORT SOURCE_PUBLIC_KEY_PATH SOURCE_RETRY_COUNT SOURCE_SSL SOURCE_SSL_CA SOURCE_SSL_CAPATH SOURCE_SSL_CERT SOURCE_SSL_CIPHER SOURCE_SSL_CRL SOURCE_SSL_CRLPATH SOURCE_SSL_KEY SOURCE_SSL_VERIFY_SERVER_CERT SOURCE_TLS_CIPHERSUITES SOURCE_TLS_VERSION SOURCE_USER SOURCE_ZSTD_COMPRESSION_LEVEL SPATIAL SPECIFIC SQL SQLEXCEPTION SQLSTATE SQLWARNING SQL_AFTER_GTIDS SQL_AFTER_MTS_GAPS SQL_BEFORE_GTIDS SQL_BIG_RESULT SQL_BUFFER_RESULT SQL_CACHE SQL_CALC_FOUND_ROWS SQL_NO_CACHE SQL_SMALL_RESULT SQL_THREAD SQL_TSI_DAY SQL_TSI_HOUR SQL_TSI_MINUTE SQL_TSI_MONTH SQL_TSI_QUARTER SQL_TSI_SECOND SQL_TSI_WEEK SQL_TSI_YEAR SRID SSL STACKED START STARTING STARTS STATS_AUTO_RECALC STATS_PERSISTENT STATS_SAMPLE_PAGES STATUS STOP STORAGE STORED STRAIGHT_JOIN STREAM STRING SUBCLASS_ORIGIN SUBJECT SUBPARTITION SUBPARTITIONS SUPER SUSPEND SWAPS SWITCHES SYSTEM TABLE TABLES TABLESPACE TABLE_CHECKSUM TABLE_NAME TEMPORARY TEMPTABLE TERMINATED TEXT THAN THEN THREAD_PRIORITY TIES TIME TIMESTAMP TIMESTAMPADD TIMESTAMPDIFF TINYBLOB TINYINT TINYTEXT TLS TO TRAILING TRANSACTION TRIGGER TRIGGERS TRUE TRUNCATE TYPE TYPES UNBOUNDED UNCOMMITTED UNDEFINED UNDO UNDOFILE UNDO_BUFFER_SIZE UNICODE UNINSTALL UNION UNIQUE UNKNOWN UNLOCK UNREGISTER UNSIGNED UNTIL UPDATE UPGRADE USAGE USE USER USER_RESOURCES USE_FRM USING UTC_DATE UTC_TIME UTC_TIMESTAMP VALIDATION VALUE VALUES VARBINARY VARCHAR VARCHARACTER VARIABLES VARYING VCPU VIEW VIRTUAL VISIBLE WAIT WARNINGS WEEK WEIGHT_STRING WHEN WHERE WHILE WINDOW WITH WITHOUT WORK WRAPPER WRITE X509 XA XID XML XOR YEAR YEAR_MONTH ZEROFILL ZONE