MySQL 5.5 Keywords and Reserved Words

The following list shows the keywords and reserved words in MySQL 5.5, along with changes to individual words from version to version. Reserved keywords are marked with (R). In addition, _FILENAME is reserved.

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. Most of the reserved words in the list are forbidden by standard SQL as column or table names (for example, GROUP). A few are reserved because MySQL needs them and uses a yacc parser.

A

  • ACCESSIBLE (R)

  • ACTION

  • ADD (R)

  • AFTER

  • AGAINST

  • AGGREGATE

  • ALGORITHM

  • ALL (R)

  • ALTER (R)

  • ANALYZE (R)

  • AND (R)

  • ANY

  • AS (R)

  • ASC (R)

  • ASCII

  • ASENSITIVE (R)

  • AT

  • AUTHORS

  • 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

  • BY (R)

  • BYTE

C

  • CACHE

  • CALL (R)

  • CASCADE (R)

  • CASCADED

  • CASE (R)

  • CATALOG_NAME

  • CHAIN

  • CHANGE (R)

  • CHANGED

  • CHAR (R)

  • CHARACTER (R)

  • CHARSET

  • CHECK (R)

  • CHECKSUM

  • CIPHER

  • CLASS_ORIGIN

  • CLIENT

  • CLOSE

  • COALESCE

  • CODE

  • COLLATE (R)

  • COLLATION

  • COLUMN (R)

  • COLUMNS

  • COLUMN_NAME

  • COMMENT

  • COMMIT

  • COMMITTED

  • COMPACT

  • COMPLETION

  • COMPRESSED

  • CONCURRENT

  • CONDITION (R)

  • CONNECTION

  • CONSISTENT

  • CONSTRAINT (R)

  • CONSTRAINT_CATALOG

  • CONSTRAINT_NAME

  • CONSTRAINT_SCHEMA

  • CONTAINS

  • CONTEXT

  • CONTINUE (R)

  • CONTRIBUTORS

  • CONVERT (R)

  • CPU

  • CREATE (R)

  • CROSS (R)

  • CUBE

  • 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)

  • DEFINER

  • DELAYED (R)

  • DELAY_KEY_WRITE

  • DELETE (R)

  • DESC (R)

  • DESCRIBE (R)

  • DES_KEY_FILE

  • DETERMINISTIC (R)

  • 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)

  • ENABLE

  • ENCLOSED (R)

  • END

  • ENDS

  • ENGINE

  • ENGINES

  • ENUM

  • ERROR added in 5.5.3 (nonreserved)

  • ERRORS

  • ESCAPE

  • ESCAPED (R)

  • EVENT

  • EVENTS

  • EVERY

  • EXECUTE

  • EXISTS (R)

  • EXIT (R)

  • EXPANSION

  • EXPLAIN (R)

  • EXTENDED

  • EXTENT_SIZE

F

  • FALSE (R)

  • FAST

  • FAULTS

  • FETCH (R)

  • FIELDS

  • FILE

  • FIRST

  • FIXED

  • FLOAT (R)

  • FLOAT4 (R)

  • FLOAT8 (R)

  • FLUSH

  • FOR (R)

  • FORCE (R)

  • FOREIGN (R)

  • FOUND

  • FRAC_SECOND removed in 5.5.3

  • FROM (R)

  • FULL

  • FULLTEXT (R)

  • FUNCTION

G

  • GENERAL added in 5.5.3 (reserved); became nonreserved in 5.5.8

  • GEOMETRY

  • GEOMETRYCOLLECTION

  • GET_FORMAT

  • GLOBAL

  • GRANT (R)

  • GRANTS

  • GROUP (R)

H

  • HANDLER

  • HASH

  • HAVING (R)

  • HELP

  • HIGH_PRIORITY (R)

  • HOST

  • HOSTS

  • HOUR

  • HOUR_MICROSECOND (R)

  • HOUR_MINUTE (R)

  • HOUR_SECOND (R)

I

  • IDENTIFIED

  • IF (R)

  • IGNORE (R)

  • IGNORE_SERVER_IDS became nonreserved in 5.5.8

  • IMPORT

  • IN (R)

  • INDEX (R)

  • INDEXES

  • INFILE (R)

  • INITIAL_SIZE

  • INNER (R)

  • INNOBASE removed in 5.5.3

  • INNODB removed in 5.5.3

  • INOUT (R)

  • INSENSITIVE (R)

  • INSERT (R)

  • INSERT_METHOD

  • INSTALL

  • INT (R)

  • INT1 (R)

  • INT2 (R)

  • INT3 (R)

  • INT4 (R)

  • INT8 (R)

  • INTEGER (R)

  • INTERVAL (R)

  • INTO (R)

  • INVOKER

  • IO

  • IO_THREAD

  • IPC

  • IS (R)

  • ISOLATION

  • ISSUER

  • ITERATE (R)

J

  • JOIN (R)

K

  • KEY (R)

  • KEYS (R)

  • KEY_BLOCK_SIZE

  • KILL (R)

L

  • LANGUAGE

  • LAST

  • 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)

  • LOCKS

  • LOGFILE

  • LOGS

  • LONG (R)

  • LONGBLOB (R)

  • LONGTEXT (R)

  • LOOP (R)

  • LOW_PRIORITY (R)

M

  • MASTER

  • MASTER_CONNECT_RETRY

  • MASTER_HEARTBEAT_PERIOD became nonreserved in 5.5.8

  • MASTER_HOST

  • MASTER_LOG_FILE

  • MASTER_LOG_POS

  • MASTER_PASSWORD

  • MASTER_PORT

  • MASTER_SERVER_ID

  • MASTER_SSL

  • MASTER_SSL_CA

  • MASTER_SSL_CAPATH

  • MASTER_SSL_CERT

  • MASTER_SSL_CIPHER

  • MASTER_SSL_KEY

  • MASTER_SSL_VERIFY_SERVER_CERT (R)

  • MASTER_USER

  • 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)

  • 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

  • NEW

  • NEXT

  • NO

  • NODEGROUP

  • NONE

  • NOT (R)

  • NO_WAIT

  • NO_WRITE_TO_BINLOG (R)

  • NULL (R)

  • NUMERIC (R)

  • NVARCHAR

O

  • OFFSET

  • OLD_PASSWORD

  • ON (R)

  • ONE

  • ONE_SHOT

  • OPEN

  • OPTIMIZE (R)

  • OPTION (R)

  • OPTIONALLY (R)

  • OPTIONS

  • OR (R)

  • ORDER (R)

  • OUT (R)

  • OUTER (R)

  • OUTFILE (R)

  • OWNER

P

  • PACK_KEYS

  • PAGE

  • PARSER

  • PARTIAL

  • PARTITION

  • PARTITIONING

  • PARTITIONS

  • PASSWORD

  • PHASE

  • PLUGIN

  • PLUGINS

  • POINT

  • POLYGON

  • PORT

  • PRECISION (R)

  • PREPARE

  • PRESERVE

  • PREV

  • PRIMARY (R)

  • PRIVILEGES

  • PROCEDURE (R)

  • PROCESSLIST

  • PROFILE

  • PROFILES

  • PROXY added in 5.5.7 (nonreserved)

  • PURGE (R)

Q

  • QUARTER

  • QUERY

  • QUICK

R

  • RANGE (R)

  • READ (R)

  • READS (R)

  • READ_ONLY

  • READ_WRITE (R)

  • REAL (R)

  • REBUILD

  • RECOVER

  • REDOFILE

  • REDO_BUFFER_SIZE

  • REDUNDANT

  • REFERENCES (R)

  • REGEXP (R)

  • RELAY added in 5.5.3 (nonreserved)

  • RELAYLOG

  • RELAY_LOG_FILE

  • RELAY_LOG_POS

  • RELAY_THREAD

  • RELEASE (R)

  • RELOAD

  • REMOVE

  • RENAME (R)

  • REORGANIZE

  • REPAIR

  • REPEAT (R)

  • REPEATABLE

  • REPLACE (R)

  • REPLICATION

  • REQUIRE (R)

  • RESET

  • RESIGNAL (R)

  • RESTORE

  • RESTRICT (R)

  • RESUME

  • RETURN (R)

  • RETURNS

  • REVOKE (R)

  • RIGHT (R)

  • RLIKE (R)

  • ROLLBACK

  • ROLLUP

  • ROUTINE

  • ROW

  • ROWS

  • ROW_FORMAT

  • RTREE

S

  • SAVEPOINT

  • SCHEDULE

  • SCHEMA (R)

  • SCHEMAS (R)

  • SCHEMA_NAME

  • SECOND

  • SECOND_MICROSECOND (R)

  • SECURITY

  • SELECT (R)

  • SENSITIVE (R)

  • SEPARATOR (R)

  • SERIAL

  • SERIALIZABLE

  • SERVER

  • SESSION

  • SET (R)

  • SHARE

  • SHOW (R)

  • SHUTDOWN

  • SIGNAL (R)

  • SIGNED

  • SIMPLE

  • SLAVE

  • SLOW added in 5.5.3 (reserved); became nonreserved in 5.5.8

  • SMALLINT (R)

  • SNAPSHOT

  • SOCKET

  • SOME

  • SONAME

  • SOUNDS

  • SOURCE

  • SPATIAL (R)

  • SPECIFIC (R)

  • SQL (R)

  • SQLEXCEPTION (R)

  • SQLSTATE (R)

  • SQLWARNING (R)

  • SQL_BIG_RESULT (R)

  • SQL_BUFFER_RESULT

  • SQL_CACHE

  • SQL_CALC_FOUND_ROWS (R)

  • SQL_NO_CACHE

  • SQL_SMALL_RESULT (R)

  • SQL_THREAD

  • SQL_TSI_DAY

  • SQL_TSI_FRAC_SECOND removed in 5.5.3

  • SQL_TSI_HOUR

  • SQL_TSI_MINUTE

  • SQL_TSI_MONTH

  • SQL_TSI_QUARTER

  • SQL_TSI_SECOND

  • SQL_TSI_WEEK

  • SQL_TSI_YEAR

  • SSL (R)

  • START

  • STARTING (R)

  • STARTS

  • STATUS

  • STOP

  • STORAGE

  • STRAIGHT_JOIN (R)

  • STRING

  • SUBCLASS_ORIGIN

  • SUBJECT

  • SUBPARTITION

  • SUBPARTITIONS

  • SUPER

  • SUSPEND

  • SWAPS

  • SWITCHES

T

  • TABLE (R)

  • TABLES

  • TABLESPACE

  • TABLE_CHECKSUM

  • TABLE_NAME

  • TEMPORARY

  • TEMPTABLE

  • TERMINATED (R)

  • TEXT

  • THAN

  • THEN (R)

  • TIME

  • TIMESTAMP

  • TIMESTAMPADD

  • TIMESTAMPDIFF

  • TINYBLOB (R)

  • TINYINT (R)

  • TINYTEXT (R)

  • TO (R)

  • TRAILING (R)

  • TRANSACTION

  • TRIGGER (R)

  • TRIGGERS

  • TRUE (R)

  • TRUNCATE

  • TYPE

  • TYPES

U

  • 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

  • VALUE

  • VALUES (R)

  • VARBINARY (R)

  • VARCHAR (R)

  • VARCHARACTER (R)

  • VARIABLES

  • VARYING (R)

  • VIEW

W

  • WAIT

  • WARNINGS

  • WEEK

  • WHEN (R)

  • WHERE (R)

  • WHILE (R)

  • WITH (R)

  • WORK

  • WRAPPER

  • WRITE (R)

X

  • X509

  • XA

  • XML

  • XOR (R)

Y

  • YEAR

  • YEAR_MONTH (R)

Z

  • ZEROFILL (R)

MySQL 5.5 New Keywords and Reserved Words

The following list shows the keywords and reserved words that are added in MySQL 5.5, compared to MySQL 5.1. Reserved keywords are marked with (R).

C

  • CATALOG_NAME

  • CLASS_ORIGIN

  • COLUMN_NAME

  • CONSTRAINT_CATALOG

  • CONSTRAINT_NAME

  • CONSTRAINT_SCHEMA

  • CURSOR_NAME

E

  • ERROR

G

  • GENERAL

I

  • IGNORE_SERVER_IDS

M

  • MASTER_HEARTBEAT_PERIOD

  • MESSAGE_TEXT

  • MYSQL_ERRNO

P

  • PROXY

R

  • RELAY

  • RELAYLOG

  • RESIGNAL (R)

S

  • SCHEMA_NAME

  • SIGNAL (R)

  • SLOW

  • SUBCLASS_ORIGIN

T

  • TABLE_NAME

X

  • XML

MySQL 5.5 Removed Keywords and Reserved Words

The following list shows the keywords and reserved words that are removed in MySQL 5.5, compared to MySQL 5.1. Reserved keywords are marked with (R).

  • FRAC_SECOND

  • INNOBASE

  • INNODB

  • SQL_TSI_FRAC_SECOND

参考: https://dev.mysql.com/doc/refman/5.5/en/keywords.html#keywords-5-5-detailed-I

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