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title: "预留关键字（MySQL 模式） - OceanBase 数据库 V4.6.0 | OceanBase 文档中心"
description: 预留关键字（MySQL 模式） 目前，OceanBase 数据库 MySQL 模式下的预留关键字如下所示。 以下是整理后的表格，保持了原有的内容结构，使其更清晰易读： 字母 A ACCESSIBLE ADD ALTER ANALYZE AS ASC ASENSITIVE B BEFORE BETWEEN BIGINT…
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# 预留关键字（MySQL 模式）

更新时间：2026-06-06 11:07:30

[编辑](https://github.com/oceanbase/oceanbase-doc/edit/V4.6.0/zh-CN/700.reference/500.sql-reference/800.reserved-keyword-of-mysql-mode.md)  

目前，OceanBase 数据库 MySQL 模式下的预留关键字如下所示。

以下是整理后的表格，保持了原有的内容结构，使其更清晰易读：

| 字母 |  |  |  | |
| --- | --- | --- | --- | --- |
| A | ACCESSIBLE | ADD | ALTER | ANALYZE |
|  | AS | ASC | ASENSITIVE | |
| B | BEFORE | BETWEEN | BIGINT | BINARY |
|  | BLOB |  |  | |
| C | CALL | CASCADE | CASE | CHANGE |
|  | CHAR | CHARACTER | CHECK | COLLATE |
|  | COLUMN | CONDITION | CONSTRAINT | CONTINUE |
|  | CONVERT | CREATE | CROSS | |
|  | CURRENT_DATE | CURRENT_TIME | CURRENT_TIMESTAMP | CURRENT_USER |
|  | CURSOR |  |  | |
| D | DATABASE | DATABASES | DAY_HOUR | DAY_MICROSECOND |
|  | DAY_MINUTE | DAY_SECOND | DECLARE | DECIMAL |
|  | DEFAULT | DELAYED | DELETE | DESC |
|  | DESCRIBE | DETERMINISTIC | DISTINCTROW | DIV |
|  | DOUBLE | DROP | DUAL | |
| E | EACH | ELSE | ELSEIF | ENCLOSED |
|  | ESCAPED | EXISTS | EXIT | EXPLAIN |
| F | FETCH | FLOAT | FLOAT4 | FLOAT8 |
|  | FOR | FORCE | FOREIGN | FULLTEXT |
| G | GENERATED | GET | GRANT | GROUP |
| H | HAVING | HIGH_PRIORITY | HOUR_MICROSECOND | HOUR_MINUTE |
|  | HOUR_SECOND |  |  | |
| I | IF | IGNORE | IN | INDEX |
|  | INFILE | INNER | INOUT | INSENSITIVE |
|  | INSERT | INT | INT1 | INT2 |
|  | INT3 | INT4 | INT8 | INTEGER |
|  | INTERVAL | INTO | IO_AFTER_GTIDS | IO_BEFORE_GTIDS |
|  | IS | ITERATE |  | |
| J | JOIN |  |  | |
| K | KEY | KEYS | KILL | |
| L | LEAVE | LEFT | LIKE | LIMIT |
|  | LINEAR | LINES | LOAD | LOCALTIME |
|  | LOCALTIMESTAMP | LONG | LONGBLOB | LONGTEXT |
|  | LOOP | LOW_PRIORITY |  | |
| M | MASTER_BIND | MASTER_SSL_VERIFY_SERVER_CERT | MATCH | MAXVALUE |
|  | MEDIUMBLOB | MEDIUMINT | MEDIUMTEXT | MIDDLEINT |
|  | MINUTE_MICROSECOND | MINUTE_SECOND | MOD | MODIFIES |
| N | NATURAL | NOT | NO_WRITE_TO_BINLOG | NUMERIC |
| O | ON | OPTIMIZE | OPTION | OPTIONALLY |
|  | OR | ORDER | OUT | OUTER |
|  | OUTFILE |  |  | |
| P | PARTITION | PRECISION | PRIMARY | PROCEDURE |
|  | PURGE |  |  | |
| R |  | READ | READS | READ_WRITE |
|  | REAL | REFERENCES | REGEXP | RELEASE |
|  | RENAME | REPEAT | REPLACE | REQUIRE |
|  | RESIGNAL | RESTRICT | RETURN | REVOKE |
|  | RIGHT | RLIKE |  | |
| S | SCHEMA | SCHEMAS | SECOND_MICROSECOND | SENSITIVE |
|  | SEPARATOR | SET | SHOW | SIGNAL |
|  | SMALLINT | SPATIAL | SPECIFIC | SQL |
|  | SQLEXCEPTION | SQLSTATE | SQLWARNING | SQL_BIG_RESULT |
|  | SQL_SMALL_RESULT | SSL | SKIP | STARTING |
|  | STORED |  |  | |
| T | TABLE | TERMINATED | THEN | TINYBLOB |
|  | TINYINT | TINYTEXT | TO | TRIGGER |
| U | UNDO | UNION | UNLOCK | UNSIGNED |
|  | UPDATE | USAGE | USE | USING |
|  | UTC_DATE | UTC_TIME | UTC_TIMESTAMP | |
| V | VALUES | VARBINARY | VARCHAR | VARCHARACTER |
|  | VARYING | VIRTUAL |  | |
| W | WHERE | WHILE | WITH | WRITE |
| X | XOR |  |  | |
| Y | YEAR_MONTH |  |  | |
| Z | ZEROFILL |  |  | |

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