MySQL| MySQL关键字和保留字
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)ACTIONADD(R)AFTERAGAINSTAGGREGATEALGORITHMALL(R)ALTER(R)ANALYZE(R)AND(R)ANYAS(R)ASC(R)ASCIIASENSITIVE(R)ATAUTHORSAUTOEXTEND_SIZEAUTO_INCREMENTAVGAVG_ROW_LENGTH
B
BACKUPBEFORE(R)BEGINBETWEEN(R)BIGINT(R)BINARY(R)BINLOGBITBLOB(R)BLOCKBOOLBOOLEANBOTH(R)BTREEBY(R)BYTE
C
CACHECALL(R)CASCADE(R)CASCADEDCASE(R)CATALOG_NAMECHAINCHANGE(R)CHANGEDCHAR(R)CHARACTER(R)CHARSETCHECK(R)CHECKSUMCIPHERCLASS_ORIGINCLIENTCLOSECOALESCECODECOLLATE(R)COLLATIONCOLUMN(R)COLUMNSCOLUMN_NAMECOMMENTCOMMITCOMMITTEDCOMPACTCOMPLETIONCOMPRESSEDCONCURRENTCONDITION(R)CONNECTIONCONSISTENTCONSTRAINT(R)CONSTRAINT_CATALOGCONSTRAINT_NAMECONSTRAINT_SCHEMACONTAINSCONTEXTCONTINUE(R)CONTRIBUTORSCONVERT(R)CPUCREATE(R)CROSS(R)CUBECURRENT_DATE(R)CURRENT_TIME(R)CURRENT_TIMESTAMP(R)CURRENT_USER(R)CURSOR(R)CURSOR_NAME
D
DATADATABASE(R)DATABASES(R)DATAFILEDATEDATETIMEDAYDAY_HOUR(R)DAY_MICROSECOND(R)DAY_MINUTE(R)DAY_SECOND(R)DEALLOCATEDEC(R)DECIMAL(R)DECLARE(R)DEFAULT(R)DEFINERDELAYED(R)DELAY_KEY_WRITEDELETE(R)DESC(R)DESCRIBE(R)DES_KEY_FILEDETERMINISTIC(R)DIRECTORYDISABLEDISCARDDISKDISTINCT(R)DISTINCTROW(R)DIV(R)DODOUBLE(R)DROP(R)DUAL(R)DUMPFILEDUPLICATEDYNAMIC
E
EACH(R)ELSE(R)ELSEIF(R)ENABLEENCLOSED(R)ENDENDSENGINEENGINESENUMERRORadded in 5.5.3 (nonreserved)ERRORSESCAPEESCAPED(R)EVENTEVENTSEVERYEXECUTEEXISTS(R)EXIT(R)EXPANSIONEXPLAIN(R)EXTENDEDEXTENT_SIZE
F
FALSE(R)FASTFAULTSFETCH(R)FIELDSFILEFIRSTFIXEDFLOAT(R)FLOAT4(R)FLOAT8(R)FLUSHFOR(R)FORCE(R)FOREIGN(R)FOUNDFRAC_SECONDremoved in 5.5.3FROM(R)FULLFULLTEXT(R)FUNCTION
G
GENERALadded in 5.5.3 (reserved); became nonreserved in 5.5.8GEOMETRYGEOMETRYCOLLECTIONGET_FORMATGLOBALGRANT(R)GRANTSGROUP(R)
H
HANDLERHASHHAVING(R)HELPHIGH_PRIORITY(R)HOSTHOSTSHOURHOUR_MICROSECOND(R)HOUR_MINUTE(R)HOUR_SECOND(R)
I
IDENTIFIEDIF(R)IGNORE(R)IGNORE_SERVER_IDSbecame nonreserved in 5.5.8IMPORTIN(R)INDEX(R)INDEXESINFILE(R)INITIAL_SIZEINNER(R)INNOBASEremoved in 5.5.3INNODBremoved in 5.5.3INOUT(R)INSENSITIVE(R)INSERT(R)INSERT_METHODINSTALLINT(R)INT1(R)INT2(R)INT3(R)INT4(R)INT8(R)INTEGER(R)INTERVAL(R)INTO(R)INVOKERIOIO_THREADIPCIS(R)ISOLATIONISSUERITERATE(R)
J
JOIN(R)
K
KEY(R)KEYS(R)KEY_BLOCK_SIZEKILL(R)
L
LANGUAGELASTLEADING(R)LEAVE(R)LEAVESLEFT(R)LESSLEVELLIKE(R)LIMIT(R)LINEAR(R)LINES(R)LINESTRINGLISTLOAD(R)LOCALLOCALTIME(R)LOCALTIMESTAMP(R)LOCK(R)LOCKSLOGFILELOGSLONG(R)LONGBLOB(R)LONGTEXT(R)LOOP(R)LOW_PRIORITY(R)
M
MASTERMASTER_CONNECT_RETRYMASTER_HEARTBEAT_PERIODbecame nonreserved in 5.5.8MASTER_HOSTMASTER_LOG_FILEMASTER_LOG_POSMASTER_PASSWORDMASTER_PORTMASTER_SERVER_IDMASTER_SSLMASTER_SSL_CAMASTER_SSL_CAPATHMASTER_SSL_CERTMASTER_SSL_CIPHERMASTER_SSL_KEYMASTER_SSL_VERIFY_SERVER_CERT(R)MASTER_USERMATCH(R)MAXVALUE(R)MAX_CONNECTIONS_PER_HOURMAX_QUERIES_PER_HOURMAX_ROWSMAX_SIZEMAX_UPDATES_PER_HOURMAX_USER_CONNECTIONSMEDIUMMEDIUMBLOB(R)MEDIUMINT(R)MEDIUMTEXT(R)MEMORYMERGEMESSAGE_TEXTMICROSECONDMIDDLEINT(R)MIGRATEMINUTEMINUTE_MICROSECOND(R)MINUTE_SECOND(R)MIN_ROWSMOD(R)MODEMODIFIES(R)MODIFYMONTHMULTILINESTRINGMULTIPOINTMULTIPOLYGONMUTEXMYSQL_ERRNO
N
NAMENAMESNATIONALNATURAL(R)NCHARNDBNDBCLUSTERNEWNEXTNONODEGROUPNONENOT(R)NO_WAITNO_WRITE_TO_BINLOG(R)NULL(R)NUMERIC(R)NVARCHAR
O
OFFSETOLD_PASSWORDON(R)ONEONE_SHOTOPENOPTIMIZE(R)OPTION(R)OPTIONALLY(R)OPTIONSOR(R)ORDER(R)OUT(R)OUTER(R)OUTFILE(R)OWNER
P
PACK_KEYSPAGEPARSERPARTIALPARTITIONPARTITIONINGPARTITIONSPASSWORDPHASEPLUGINPLUGINSPOINTPOLYGONPORTPRECISION(R)PREPAREPRESERVEPREVPRIMARY(R)PRIVILEGESPROCEDURE(R)PROCESSLISTPROFILEPROFILESPROXYadded in 5.5.7 (nonreserved)PURGE(R)
Q
QUARTERQUERYQUICK
R
RANGE(R)READ(R)READS(R)READ_ONLYREAD_WRITE(R)REAL(R)REBUILDRECOVERREDOFILEREDO_BUFFER_SIZEREDUNDANTREFERENCES(R)REGEXP(R)RELAYadded in 5.5.3 (nonreserved)RELAYLOGRELAY_LOG_FILERELAY_LOG_POSRELAY_THREADRELEASE(R)RELOADREMOVERENAME(R)REORGANIZEREPAIRREPEAT(R)REPEATABLEREPLACE(R)REPLICATIONREQUIRE(R)RESETRESIGNAL(R)RESTORERESTRICT(R)RESUMERETURN(R)RETURNSREVOKE(R)RIGHT(R)RLIKE(R)ROLLBACKROLLUPROUTINEROWROWSROW_FORMATRTREE
S
SAVEPOINTSCHEDULESCHEMA(R)SCHEMAS(R)SCHEMA_NAMESECONDSECOND_MICROSECOND(R)SECURITYSELECT(R)SENSITIVE(R)SEPARATOR(R)SERIALSERIALIZABLESERVERSESSIONSET(R)SHARESHOW(R)SHUTDOWNSIGNAL(R)SIGNEDSIMPLESLAVESLOWadded in 5.5.3 (reserved); became nonreserved in 5.5.8SMALLINT(R)SNAPSHOTSOCKETSOMESONAMESOUNDSSOURCESPATIAL(R)SPECIFIC(R)SQL(R)SQLEXCEPTION(R)SQLSTATE(R)SQLWARNING(R)SQL_BIG_RESULT(R)SQL_BUFFER_RESULTSQL_CACHESQL_CALC_FOUND_ROWS(R)SQL_NO_CACHESQL_SMALL_RESULT(R)SQL_THREADSQL_TSI_DAYSQL_TSI_FRAC_SECONDremoved in 5.5.3SQL_TSI_HOURSQL_TSI_MINUTESQL_TSI_MONTHSQL_TSI_QUARTERSQL_TSI_SECONDSQL_TSI_WEEKSQL_TSI_YEARSSL(R)STARTSTARTING(R)STARTSSTATUSSTOPSTORAGESTRAIGHT_JOIN(R)STRINGSUBCLASS_ORIGINSUBJECTSUBPARTITIONSUBPARTITIONSSUPERSUSPENDSWAPSSWITCHES
T
TABLE(R)TABLESTABLESPACETABLE_CHECKSUMTABLE_NAMETEMPORARYTEMPTABLETERMINATED(R)TEXTTHANTHEN(R)TIMETIMESTAMPTIMESTAMPADDTIMESTAMPDIFFTINYBLOB(R)TINYINT(R)TINYTEXT(R)TO(R)TRAILING(R)TRANSACTIONTRIGGER(R)TRIGGERSTRUE(R)TRUNCATETYPETYPES
U
UNCOMMITTEDUNDEFINEDUNDO(R)UNDOFILEUNDO_BUFFER_SIZEUNICODEUNINSTALLUNION(R)UNIQUE(R)UNKNOWNUNLOCK(R)UNSIGNED(R)UNTILUPDATE(R)UPGRADEUSAGE(R)USE(R)USERUSER_RESOURCESUSE_FRMUSING(R)UTC_DATE(R)UTC_TIME(R)UTC_TIMESTAMP(R)
V
VALUEVALUES(R)VARBINARY(R)VARCHAR(R)VARCHARACTER(R)VARIABLESVARYING(R)VIEW
W
WAITWARNINGSWEEKWHEN(R)WHERE(R)WHILE(R)WITH(R)WORKWRAPPERWRITE(R)
X
X509XAXMLXOR(R)
Y
YEARYEAR_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_NAMECLASS_ORIGINCOLUMN_NAMECONSTRAINT_CATALOGCONSTRAINT_NAMECONSTRAINT_SCHEMACURSOR_NAME
E
ERROR
G
GENERAL
I
IGNORE_SERVER_IDS
M
MASTER_HEARTBEAT_PERIODMESSAGE_TEXTMYSQL_ERRNO
P
PROXY
R
RELAYRELAYLOGRESIGNAL(R)
S
SCHEMA_NAMESIGNAL(R)SLOWSUBCLASS_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_SECONDINNOBASEINNODBSQL_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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