9.3 Keywords and Reserved Words关键词和保留词

Keywords are words that have significance in SQL. Certain keywords, such as SELECT, DELETE, or BIGINT, are reserved and require special treatment for use as identifiers such as table and column names. This may also be true for the names of built-in functions.关键字是在SQL中具有重要意义的单词。某些关键字（如SELECT、DELETE或BIGINT）是保留的，需要特殊处理才能用作标识符（如表名和列名）。对于内置函数的名称也可能如此。

Nonreserved keywords are permitted as identifiers without quoting. Reserved words are permitted as identifiers if you quote them as described in Section 9.2, “Schema Object Names”:允许使用非保留关键字作为标识符，而无需引用。如果按照第9.2节，“模式对象名称”中的描述引用保留字，则允许将其作为标识符：

mysql> CREATE TABLE interval (begin INT, end INT);
ERROR 1064 (42000): You have an error in your SQL syntax ...
near 'interval (begin INT, end INT)'

BEGIN and END are keywords but not reserved, so their use as identifiers does not require quoting. INTERVAL is a reserved keyword and must be quoted to be used as an identifier:BEGIN和END是关键字，但不是保留的，因此它们用作标识符不需要引用。INTERVAL是一个保留关键字，必须引用它才能用作标识符：

mysql> CREATE TABLE `interval` (begin INT, end INT);
Query OK, 0 rows affected (0.01 sec)

Exception: A word that follows a period in a qualified name must be an identifier, so it need not be quoted even if it is reserved:例外：限定名称中句点后面的单词必须是标识符，因此即使保留也不需要引用：

mysql> CREATE TABLE mydb.interval (begin INT, end INT);
Query OK, 0 rows affected (0.01 sec)

Names of built-in functions are permitted as identifiers but may require care to be used as such. 允许将内置函数的名称作为标识符，但可能需要谨慎使用。For example, COUNT is acceptable as a column name. However, by default, no whitespace is permitted in function invocations between the function name and the following ( character. 例如，COUNT作为列名是可以接受的。但是，默认情况下，函数调用中不允许在函数名称和后面跟着的(字符之间使用空格。This requirement enables the parser to distinguish whether the name is used in a function call or in nonfunction context. 这一要求使解析器能够区分名称是在函数调用中使用还是在非函数上下文中使用。For further details on recognition of function names, see Section 9.2.5, “Function Name Parsing and Resolution”.有关函数名称识别的更多详细信息，请参阅第9.2.5节，“函数名称解析和解析”。

The INFORMATION_SCHEMA.KEYWORDS table lists the words considered keywords by MySQL and indicates whether they are reserved. See Section 26.3.17, “The INFORMATION_SCHEMA KEYWORDS Table”.INFORMATION_SCHEMA.KEYWORDS表列出了MySQL认为是关键字的单词，并指示它们是否被保留。参见第26.3.17节，“INFORMATION_SCHEMA关键字表”。

MySQL 8.0 Keywords and Reserved WordsMySQL 8.0关键字和保留字

The following list shows the keywords and reserved words in MySQL 8.0, along with changes to individual words from version to version. Reserved keywords are marked with (R). In addition, _FILENAME is reserved.下面的列表显示了MySQL 8.0中的关键字和保留字，以及不同版本对单个单词的更改。保留的关键字用（R）标记。此外，_FILENAME是保留的。

At some point, you might upgrade to a higher version, so it is a good idea to have a look at future reserved words, too. You can find these in the manuals that cover higher versions of MySQL. 在某个时候，你可能会升级到更高的版本，所以最好也看看未来的保留字。您可以在涵盖MySQL更高版本的手册中找到这些内容。Most of the reserved words in the list are forbidden by standard SQL as column or table names (for example, GROUP). 列表中的大多数保留字都被标准SQL禁止作为列或表名（例如GROUP）。A few are reserved because MySQL needs them and uses a yacc parser.一些是保留的，因为MySQL需要它们并且使用yacc解析器。

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

A

  • ACCESSIBLE (R)

  • ACCOUNT

  • ACTION

  • ACTIVE; added in 8.0.14 (nonreserved)

  • ADD (R)

  • ADMIN; became nonreserved in 8.0.12

  • AFTER

  • AGAINST

  • AGGREGATE

  • ALGORITHM

  • ALL (R)

  • ALTER (R)

  • ALWAYS

  • ANALYSE; removed in 8.0.1

  • ANALYZE (R)

  • AND (R)

  • ANY

  • ARRAY; added in 8.0.17 (reserved); became nonreserved in 8.0.19

  • AS (R)

  • ASC (R)

  • ASCII

  • ASENSITIVE (R)

  • AT

  • ATTRIBUTE; added in 8.0.21 (nonreserved)

  • AUTOEXTEND_SIZE

  • AUTO_INCREMENT

  • AVG

  • AVG_ROW_LENGTH

B

  • BACKUP

  • BEFORE (R)

  • BEGIN

  • BETWEEN (R)

  • BIGINT (R)

  • BINARY (R)

  • BINLOG

  • BIT

  • BLOB (R)

  • BLOCK

  • BOOL

  • BOOLEAN

  • BOTH (R)

  • BTREE

  • BUCKETS; added in 8.0.2 (nonreserved)

  • BY (R)

  • BYTE

C

  • CACHE

  • CALL (R)

  • CASCADE (R)

  • CASCADED

  • CASE (R)

  • CATALOG_NAME

  • CHAIN

  • CHANGE (R)

  • CHANGED

  • CHANNEL

  • CHAR (R)

  • CHARACTER (R)

  • CHARSET

  • CHECK (R)

  • CHECKSUM

  • CIPHER

  • CLASS_ORIGIN

  • CLIENT

  • CLONE; added in 8.0.3 (nonreserved)

  • CLOSE

  • COALESCE

  • CODE

  • COLLATE (R)

  • COLLATION

  • COLUMN (R)

  • COLUMNS

  • COLUMN_FORMAT

  • COLUMN_NAME

  • COMMENT

  • COMMIT

  • COMMITTED

  • COMPACT

  • COMPLETION

  • COMPONENT

  • COMPRESSED

  • COMPRESSION

  • CONCURRENT

  • CONDITION (R)

  • CONNECTION

  • CONSISTENT

  • CONSTRAINT (R)

  • CONSTRAINT_CATALOG

  • CONSTRAINT_NAME

  • CONSTRAINT_SCHEMA

  • CONTAINS

  • CONTEXT

  • CONTINUE (R)

  • CONVERT (R)

  • CPU

  • CREATE (R)

  • CROSS (R)

  • CUBE (R); became reserved in 8.0.1

  • CUME_DIST (R); added in 8.0.2 (reserved)

  • CURRENT

  • CURRENT_DATE (R)

  • CURRENT_TIME (R)

  • CURRENT_TIMESTAMP (R)

  • CURRENT_USER (R)

  • CURSOR (R)

  • CURSOR_NAME

D

  • DATA

  • DATABASE (R)

  • DATABASES (R)

  • DATAFILE

  • DATE

  • DATETIME

  • DAY

  • DAY_HOUR (R)

  • DAY_MICROSECOND (R)

  • DAY_MINUTE (R)

  • DAY_SECOND (R)

  • DEALLOCATE

  • DEC (R)

  • DECIMAL (R)

  • DECLARE (R)

  • DEFAULT (R)

  • DEFAULT_AUTH

  • DEFINER

  • DEFINITION; added in 8.0.4 (nonreserved)

  • DELAYED (R)

  • DELAY_KEY_WRITE

  • DELETE (R)

  • DENSE_RANK (R); added in 8.0.2 (reserved)

  • DESC (R)

  • DESCRIBE (R)

  • DESCRIPTION; added in 8.0.4 (nonreserved)

  • DES_KEY_FILE; removed in 8.0.3

  • DETERMINISTIC (R)

  • DIAGNOSTICS

  • DIRECTORY

  • DISABLE

  • DISCARD

  • DISK

  • DISTINCT (R)

  • DISTINCTROW (R)

  • DIV (R)

  • DO

  • DOUBLE (R)

  • DROP (R)

  • DUAL (R)

  • DUMPFILE

  • DUPLICATE

  • DYNAMIC

E

  • EACH (R)

  • ELSE (R)

  • ELSEIF (R)

  • EMPTY (R); added in 8.0.4 (reserved)

  • ENABLE

  • ENCLOSED (R)

  • ENCRYPTION

  • END

  • ENDS

  • ENFORCED; added in 8.0.16 (nonreserved)

  • ENGINE

  • ENGINES

  • ENGINE_ATTRIBUTE; added in 8.0.21 (nonreserved)

  • ENUM

  • ERROR

  • ERRORS

  • ESCAPE

  • ESCAPED (R)

  • EVENT

  • EVENTS

  • EVERY

  • EXCEPT (R)

  • EXCHANGE

  • EXCLUDE; added in 8.0.2 (nonreserved)

  • EXECUTE

  • EXISTS (R)

  • EXIT (R)

  • EXPANSION

  • EXPIRE

  • EXPLAIN (R)

  • EXPORT

  • EXTENDED

  • EXTENT_SIZE

F

  • FAILED_LOGIN_ATTEMPTS; added in 8.0.19 (nonreserved)

  • FALSE (R)

  • FAST

  • FAULTS

  • FETCH (R)

  • FIELDS

  • FILE

  • FILE_BLOCK_SIZE

  • FILTER

  • FIRST

  • FIRST_VALUE (R); added in 8.0.2 (reserved)

  • FIXED

  • FLOAT (R)

  • FLOAT4 (R)

  • FLOAT8 (R)

  • FLUSH

  • FOLLOWING; added in 8.0.2 (nonreserved)

  • FOLLOWS

  • FOR (R)

  • FORCE (R)

  • FOREIGN (R)

  • FORMAT

  • FOUND

  • FROM (R)

  • FULL

  • FULLTEXT (R)

  • FUNCTION (R); became reserved in 8.0.1

G

  • GENERAL

  • GENERATED (R)

  • GEOMCOLLECTION; added in 8.0.11 (nonreserved)

  • GEOMETRY

  • GEOMETRYCOLLECTION

  • GET (R)

  • GET_FORMAT

  • GET_MASTER_PUBLIC_KEY; added in 8.0.4 (reserved); became nonreserved in 8.0.11

  • GET_SOURCE_PUBLIC_KEY; added in 8.0.23 (nonreserved)

  • GLOBAL

  • GRANT (R)

  • GRANTS

  • GROUP (R)

  • GROUPING (R); added in 8.0.1 (reserved)

  • GROUPS (R); added in 8.0.2 (reserved)

  • GROUP_REPLICATION

H

  • HANDLER

  • HASH

  • HAVING (R)

  • HELP

  • HIGH_PRIORITY (R)

  • HISTOGRAM; added in 8.0.2 (nonreserved)

  • HISTORY; added in 8.0.3 (nonreserved)

  • HOST

  • HOSTS

  • HOUR

  • HOUR_MICROSECOND (R)

  • HOUR_MINUTE (R)

  • HOUR_SECOND (R)

I

  • IDENTIFIED

  • IF (R)

  • IGNORE (R)

  • IGNORE_SERVER_IDS

  • IMPORT

  • IN (R)

  • INACTIVE; added in 8.0.14 (nonreserved)

  • INDEX (R)

  • INDEXES

  • INFILE (R)

  • INITIAL_SIZE

  • INNER (R)

  • INOUT (R)

  • INSENSITIVE (R)

  • INSERT (R)

  • INSERT_METHOD

  • INSTALL

  • INSTANCE

  • INT (R)

  • INT1 (R)

  • INT2 (R)

  • INT3 (R)

  • INT4 (R)

  • INT8 (R)

  • INTEGER (R)

  • INTERVAL (R)

  • INTO (R)

  • INVISIBLE

  • INVOKER

  • IO

  • IO_AFTER_GTIDS (R)

  • IO_BEFORE_GTIDS (R)

  • IO_THREAD

  • IPC

  • IS (R)

  • ISOLATION

  • ISSUER

  • ITERATE (R)

J

  • JOIN (R)

  • JSON

  • JSON_TABLE (R); added in 8.0.4 (reserved)

  • JSON_VALUE; added in 8.0.21 (nonreserved)

K

  • KEY (R)

  • KEYRING; added in 8.0.24 (nonreserved)

  • KEYS (R)

  • KEY_BLOCK_SIZE

  • KILL (R)

L

  • LAG (R); added in 8.0.2 (reserved)

  • LANGUAGE

  • LAST

  • LAST_VALUE (R); added in 8.0.2 (reserved)

  • LATERAL (R); added in 8.0.14 (reserved)

  • LEAD (R); added in 8.0.2 (reserved)

  • LEADING (R)

  • LEAVE (R)

  • LEAVES

  • LEFT (R)

  • LESS

  • LEVEL

  • LIKE (R)

  • LIMIT (R)

  • LINEAR (R)

  • LINES (R)

  • LINESTRING

  • LIST

  • LOAD (R)

  • LOCAL

  • LOCALTIME (R)

  • LOCALTIMESTAMP (R)

  • LOCK (R)

  • LOCKED; added in 8.0.1 (nonreserved)

  • LOCKS

  • LOGFILE

  • LOGS

  • LONG (R)

  • LONGBLOB (R)

  • LONGTEXT (R)

  • LOOP (R)

  • LOW_PRIORITY (R)

M

  • MASTER

  • MASTER_AUTO_POSITION

  • MASTER_BIND (R)

  • MASTER_COMPRESSION_ALGORITHMS; added in 8.0.18 (nonreserved)

  • MASTER_CONNECT_RETRY

  • MASTER_DELAY

  • MASTER_HEARTBEAT_PERIOD

  • MASTER_HOST

  • MASTER_LOG_FILE

  • MASTER_LOG_POS

  • MASTER_PASSWORD

  • MASTER_PORT

  • MASTER_PUBLIC_KEY_PATH; added in 8.0.4 (nonreserved)

  • MASTER_RETRY_COUNT

  • MASTER_SERVER_ID; removed in 8.0.23

  • 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 (R)

  • MASTER_TLS_CIPHERSUITES; added in 8.0.19 (nonreserved)

  • MASTER_TLS_VERSION

  • MASTER_USER

  • MASTER_ZSTD_COMPRESSION_LEVEL; added in 8.0.18 (nonreserved)

  • MATCH (R)

  • MAXVALUE (R)

  • MAX_CONNECTIONS_PER_HOUR

  • MAX_QUERIES_PER_HOUR

  • MAX_ROWS

  • MAX_SIZE

  • MAX_UPDATES_PER_HOUR

  • MAX_USER_CONNECTIONS

  • MEDIUM

  • MEDIUMBLOB (R)

  • MEDIUMINT (R)

  • MEDIUMTEXT (R)

  • MEMBER; added in 8.0.17 (reserved); became nonreserved in 8.0.19

  • MEMORY

  • MERGE

  • MESSAGE_TEXT

  • MICROSECOND

  • MIDDLEINT (R)

  • MIGRATE

  • MINUTE

  • MINUTE_MICROSECOND (R)

  • MINUTE_SECOND (R)

  • MIN_ROWS

  • MOD (R)

  • MODE

  • MODIFIES (R)

  • MODIFY

  • MONTH

  • MULTILINESTRING

  • MULTIPOINT

  • MULTIPOLYGON

  • MUTEX

  • MYSQL_ERRNO

N

  • NAME

  • NAMES

  • NATIONAL

  • NATURAL (R)

  • NCHAR

  • NDB

  • NDBCLUSTER

  • NESTED; added in 8.0.4 (nonreserved)

  • NETWORK_NAMESPACE; added in 8.0.16 (nonreserved)

  • NEVER

  • NEW

  • NEXT

  • NO

  • NODEGROUP

  • NONE

  • NOT (R)

  • NOWAIT; added in 8.0.1 (nonreserved)

  • NO_WAIT

  • NO_WRITE_TO_BINLOG (R)

  • NTH_VALUE (R); added in 8.0.2 (reserved)

  • NTILE (R); added in 8.0.2 (reserved)

  • NULL (R)

  • NULLS; added in 8.0.2 (nonreserved)

  • NUMBER

  • NUMERIC (R)

  • NVARCHAR

O

  • OF (R); added in 8.0.1 (reserved)

  • OFF; added in 8.0.20 (nonreserved)

  • OFFSET

  • OJ; added in 8.0.16 (nonreserved)

  • OLD; added in 8.0.14 (nonreserved)

  • ON (R)

  • ONE

  • ONLY

  • OPEN

  • OPTIMIZE (R)

  • OPTIMIZER_COSTS (R)

  • OPTION (R)

  • OPTIONAL; added in 8.0.13 (nonreserved)

  • OPTIONALLY (R)

  • OPTIONS

  • OR (R)

  • ORDER (R)

  • ORDINALITY; added in 8.0.4 (nonreserved)

  • ORGANIZATION; added in 8.0.4 (nonreserved)

  • OTHERS; added in 8.0.2 (nonreserved)

  • OUT (R)

  • OUTER (R)

  • OUTFILE (R)

  • OVER (R); added in 8.0.2 (reserved)

  • OWNER

P

  • PACK_KEYS

  • PAGE

  • PARSER

  • PARTIAL

  • PARTITION (R)

  • PARTITIONING

  • PARTITIONS

  • PASSWORD

  • PASSWORD_LOCK_TIME; added in 8.0.19 (nonreserved)

  • PATH; added in 8.0.4 (nonreserved)

  • PERCENT_RANK (R); added in 8.0.2 (reserved)

  • PERSIST; became nonreserved in 8.0.16

  • PERSIST_ONLY; added in 8.0.2 (reserved); became nonreserved in 8.0.16

  • PHASE

  • PLUGIN

  • PLUGINS

  • PLUGIN_DIR

  • POINT

  • POLYGON

  • PORT

  • PRECEDES

  • PRECEDING; added in 8.0.2 (nonreserved)

  • PRECISION (R)

  • PREPARE

  • PRESERVE

  • PREV

  • PRIMARY (R)

  • PRIVILEGES

  • PRIVILEGE_CHECKS_USER; added in 8.0.18 (nonreserved)

  • PROCEDURE (R)

  • PROCESS; added in 8.0.11 (nonreserved)

  • PROCESSLIST

  • PROFILE

  • PROFILES

  • PROXY

  • PURGE (R)

Q

  • QUARTER

  • QUERY

  • QUICK

R

  • RANDOM; added in 8.0.18 (nonreserved)

  • RANGE (R)

  • RANK (R); added in 8.0.2 (reserved)

  • READ (R)

  • READS (R)

  • READ_ONLY

  • READ_WRITE (R)

  • REAL (R)

  • REBUILD

  • RECOVER

  • RECURSIVE (R); added in 8.0.1 (reserved)

  • REDOFILE; removed in 8.0.3

  • REDO_BUFFER_SIZE

  • REDUNDANT

  • REFERENCE; added in 8.0.4 (nonreserved)

  • REFERENCES (R)

  • REGEXP (R)

  • RELAY

  • RELAYLOG

  • RELAY_LOG_FILE

  • RELAY_LOG_POS

  • RELAY_THREAD

  • RELEASE (R)

  • RELOAD

  • REMOTE; added in 8.0.3 (nonreserved); removed in 8.0.14

  • REMOVE

  • RENAME (R)

  • REORGANIZE

  • REPAIR

  • REPEAT (R)

  • REPEATABLE

  • REPLACE (R)

  • REPLICA; added in 8.0.22 (nonreserved)

  • REPLICAS; added in 8.0.22 (nonreserved)

  • 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 (R)

  • REQUIRE_ROW_FORMAT; added in 8.0.19 (nonreserved)

  • RESET

  • RESIGNAL (R)

  • RESOURCE; added in 8.0.3 (nonreserved)

  • RESPECT; added in 8.0.2 (nonreserved)

  • RESTART; added in 8.0.4 (nonreserved)

  • RESTORE

  • RESTRICT (R)

  • RESUME

  • RETAIN; added in 8.0.14 (nonreserved)

  • RETURN (R)

  • RETURNED_SQLSTATE

  • RETURNING; added in 8.0.21 (nonreserved)

  • RETURNS

  • REUSE; added in 8.0.3 (nonreserved)

  • REVERSE

  • REVOKE (R)

  • RIGHT (R)

  • RLIKE (R)

  • ROLE; became nonreserved in 8.0.1

  • ROLLBACK

  • ROLLUP

  • ROTATE

  • ROUTINE

  • ROW (R); became reserved in 8.0.2

  • ROWS (R); became reserved in 8.0.2

  • ROW_COUNT

  • ROW_FORMAT

  • ROW_NUMBER (R); added in 8.0.2 (reserved)

  • RTREE

S

  • SAVEPOINT

  • SCHEDULE

  • SCHEMA (R)

  • SCHEMAS (R)

  • SCHEMA_NAME

  • SECOND

  • SECONDARY; added in 8.0.16 (nonreserved)

  • SECONDARY_ENGINE; added in 8.0.13 (nonreserved)

  • SECONDARY_ENGINE_ATTRIBUTE; added in 8.0.21 (nonreserved)

  • SECONDARY_LOAD; added in 8.0.13 (nonreserved)

  • SECONDARY_UNLOAD; added in 8.0.13 (nonreserved)

  • SECOND_MICROSECOND (R)

  • SECURITY

  • SELECT (R)

  • SENSITIVE (R)

  • SEPARATOR (R)

  • SERIAL

  • SERIALIZABLE

  • SERVER

  • SESSION

  • SET (R)

  • SHARE

  • SHOW (R)

  • SHUTDOWN

  • SIGNAL (R)

  • SIGNED

  • SIMPLE

  • SKIP; added in 8.0.1 (nonreserved)

  • SLAVE

  • SLOW

  • SMALLINT (R)

  • SNAPSHOT

  • SOCKET

  • SOME

  • SONAME

  • SOUNDS

  • SOURCE

  • SOURCE_AUTO_POSITION; added in 8.0.23 (nonreserved)

  • SOURCE_BIND; added in 8.0.23 (nonreserved)

  • SOURCE_COMPRESSION_ALGORITHMS; added in 8.0.23 (nonreserved)

  • SOURCE_CONNECT_RETRY; added in 8.0.23 (nonreserved)

  • SOURCE_DELAY; added in 8.0.23 (nonreserved)

  • SOURCE_HEARTBEAT_PERIOD; added in 8.0.23 (nonreserved)

  • SOURCE_HOST; added in 8.0.23 (nonreserved)

  • SOURCE_LOG_FILE; added in 8.0.23 (nonreserved)

  • SOURCE_LOG_POS; added in 8.0.23 (nonreserved)

  • SOURCE_PASSWORD; added in 8.0.23 (nonreserved)

  • SOURCE_PORT; added in 8.0.23 (nonreserved)

  • SOURCE_PUBLIC_KEY_PATH; added in 8.0.23 (nonreserved)

  • SOURCE_RETRY_COUNT; added in 8.0.23 (nonreserved)

  • SOURCE_SSL; added in 8.0.23 (nonreserved)

  • SOURCE_SSL_CA; added in 8.0.23 (nonreserved)

  • SOURCE_SSL_CAPATH; added in 8.0.23 (nonreserved)

  • SOURCE_SSL_CERT; added in 8.0.23 (nonreserved)

  • SOURCE_SSL_CIPHER; added in 8.0.23 (nonreserved)

  • SOURCE_SSL_CRL; added in 8.0.23 (nonreserved)

  • SOURCE_SSL_CRLPATH; added in 8.0.23 (nonreserved)

  • SOURCE_SSL_KEY; added in 8.0.23 (nonreserved)

  • SOURCE_SSL_VERIFY_SERVER_CERT; added in 8.0.23 (nonreserved)

  • SOURCE_TLS_CIPHERSUITES; added in 8.0.23 (nonreserved)

  • SOURCE_TLS_VERSION; added in 8.0.23 (nonreserved)

  • SOURCE_USER; added in 8.0.23 (nonreserved)

  • SOURCE_ZSTD_COMPRESSION_LEVEL; added in 8.0.23 (nonreserved)

  • SPATIAL (R)

  • SPECIFIC (R)

  • SQL (R)

  • SQLEXCEPTION (R)

  • SQLSTATE (R)

  • SQLWARNING (R)

  • SQL_AFTER_GTIDS

  • SQL_AFTER_MTS_GAPS

  • SQL_BEFORE_GTIDS

  • SQL_BIG_RESULT (R)

  • SQL_BUFFER_RESULT

  • SQL_CACHE; removed in 8.0.3

  • SQL_CALC_FOUND_ROWS (R)

  • SQL_NO_CACHE

  • SQL_SMALL_RESULT (R)

  • 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; added in 8.0.3 (nonreserved)

  • SSL (R)

  • STACKED

  • START

  • STARTING (R)

  • STARTS

  • STATS_AUTO_RECALC

  • STATS_PERSISTENT

  • STATS_SAMPLE_PAGES

  • STATUS

  • STOP

  • STORAGE

  • STORED (R)

  • STRAIGHT_JOIN (R)

  • STREAM; added in 8.0.20 (nonreserved)

  • STRING

  • SUBCLASS_ORIGIN

  • SUBJECT

  • SUBPARTITION

  • SUBPARTITIONS

  • SUPER

  • SUSPEND

  • SWAPS

  • SWITCHES

  • SYSTEM (R); added in 8.0.3 (reserved)

T

  • TABLE (R)

  • TABLES

  • TABLESPACE

  • TABLE_CHECKSUM

  • TABLE_NAME

  • TEMPORARY

  • TEMPTABLE

  • TERMINATED (R)

  • TEXT

  • THAN

  • THEN (R)

  • THREAD_PRIORITY; added in 8.0.3 (nonreserved)

  • TIES; added in 8.0.2 (nonreserved)

  • TIME

  • TIMESTAMP

  • TIMESTAMPADD

  • TIMESTAMPDIFF

  • TINYBLOB (R)

  • TINYINT (R)

  • TINYTEXT (R)

  • TLS; added in 8.0.21 (nonreserved)

  • TO (R)

  • TRAILING (R)

  • TRANSACTION

  • TRIGGER (R)

  • TRIGGERS

  • TRUE (R)

  • TRUNCATE

  • TYPE

  • TYPES

U

  • UNBOUNDED; added in 8.0.2 (nonreserved)

  • UNCOMMITTED

  • UNDEFINED

  • UNDO (R)

  • UNDOFILE

  • UNDO_BUFFER_SIZE

  • UNICODE

  • UNINSTALL

  • UNION (R)

  • UNIQUE (R)

  • UNKNOWN

  • UNLOCK (R)

  • UNSIGNED (R)

  • UNTIL

  • UPDATE (R)

  • UPGRADE

  • USAGE (R)

  • USE (R)

  • USER

  • USER_RESOURCES

  • USE_FRM

  • USING (R)

  • UTC_DATE (R)

  • UTC_TIME (R)

  • UTC_TIMESTAMP (R)

V

  • VALIDATION

  • VALUE

  • VALUES (R)

  • VARBINARY (R)

  • VARCHAR (R)

  • VARCHARACTER (R)

  • VARIABLES

  • VARYING (R)

  • VCPU; added in 8.0.3 (nonreserved)

  • VIEW

  • VIRTUAL (R)

  • VISIBLE

W

  • WAIT

  • WARNINGS

  • WEEK

  • WEIGHT_STRING

  • WHEN (R)

  • WHERE (R)

  • WHILE (R)

  • WINDOW (R); added in 8.0.2 (reserved)

  • WITH (R)

  • WITHOUT

  • WORK

  • WRAPPER

  • WRITE (R)

X

  • X509

  • XA

  • XID

  • XML

  • XOR (R)

Y

  • YEAR

  • YEAR_MONTH (R)

Z

  • ZEROFILL (R)

  • ZONE; added in 8.0.22 (nonreserved)

MySQL 8.0 New Keywords and Reserved Words

The following list shows the keywords and reserved words that are added in MySQL 8.0, compared to MySQL 5.7. Reserved keywords are marked with (R).

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | R | S | T | U | V | W | Z

A

  • ACTIVE

  • ADMIN

  • ARRAY

  • ATTRIBUTE

B

  • BUCKETS

C

  • CLONE

  • COMPONENT

  • CUME_DIST (R)

D

  • DEFINITION

  • DENSE_RANK (R)

  • DESCRIPTION

E

  • EMPTY (R)

  • ENFORCED

  • ENGINE_ATTRIBUTE

  • EXCEPT (R)

  • EXCLUDE

F

  • FAILED_LOGIN_ATTEMPTS

  • FIRST_VALUE (R)

  • FOLLOWING

G

  • GEOMCOLLECTION

  • GET_MASTER_PUBLIC_KEY

  • GET_SOURCE_PUBLIC_KEY

  • GROUPING (R)

  • GROUPS (R)

H

  • HISTOGRAM

  • HISTORY

I

  • INACTIVE

  • INVISIBLE

J

  • JSON_TABLE (R)

  • JSON_VALUE

K

  • KEYRING

L

  • LAG (R)

  • LAST_VALUE (R)

  • LATERAL (R)

  • LEAD (R)

  • LOCKED

M

  • MASTER_COMPRESSION_ALGORITHMS

  • MASTER_PUBLIC_KEY_PATH

  • MASTER_TLS_CIPHERSUITES

  • MASTER_ZSTD_COMPRESSION_LEVEL

  • MEMBER

N

  • NESTED

  • NETWORK_NAMESPACE

  • NOWAIT

  • NTH_VALUE (R)

  • NTILE (R)

  • NULLS

O

  • OF (R)

  • OFF

  • OJ

  • OLD

  • OPTIONAL

  • ORDINALITY

  • ORGANIZATION

  • OTHERS

  • OVER (R)

P

  • PASSWORD_LOCK_TIME

  • PATH

  • PERCENT_RANK (R)

  • PERSIST

  • PERSIST_ONLY

  • PRECEDING

  • PRIVILEGE_CHECKS_USER

  • PROCESS

R

  • RANDOM

  • RANK (R)

  • RECURSIVE (R)

  • REFERENCE

  • REPLICA

  • REPLICAS

  • REQUIRE_ROW_FORMAT

  • RESOURCE

  • RESPECT

  • RESTART

  • RETAIN

  • RETURNING

  • REUSE

  • ROLE

  • ROW_NUMBER (R)

S

  • SECONDARY

  • SECONDARY_ENGINE

  • SECONDARY_ENGINE_ATTRIBUTE

  • SECONDARY_LOAD

  • SECONDARY_UNLOAD

  • SKIP

  • 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

  • SRID

  • STREAM

  • SYSTEM (R)

T

  • THREAD_PRIORITY

  • TIES

  • TLS

U

  • UNBOUNDED

V

  • VCPU

  • VISIBLE

W

  • WINDOW (R)

Z

  • ZONE

MySQL 8.0 Removed Keywords and Reserved WordsMySQL 8.0删除了关键字和保留字

The following list shows the keywords and reserved words that are removed in MySQL 8.0, compared to MySQL 5.7. Reserved keywords are marked with (R).以下列表显示了与MySQL 5.7相比，MySQL 8.0中删除的关键字和保留字。保留的关键字用（R）标记。

  • ANALYSE

  • DES_KEY_FILE

  • MASTER_SERVER_ID

  • PARSE_GCOL_EXPR

  • REDOFILE

  • SQL_CACHE