MySQL保留字 ERROR 1064 (42000)

在MySQL（5.7.18）数据库中建表

 CREATE TABLE SA_ACT_ITEM
 (
    ITEMID               BIGINT(14) NOT NULL,
    REGION               INT(5),
    ACTIONID             VARCHAR(32),
    ITEMNAME             VARCHAR(64),
    MINVALUE             BIGINT(16),
    MAXVALUE             BIGINT(16),
    USESCORE             BIGINT(16),
    USETIMES             INT(5),
    STARTDATE            DATETIME,
    ENDDATE              DATETIME,
    NOTES                VARCHAR(256),
    CREATEDATE           DATETIME,
    STATUS               INT(1),
    STATUSDATE           DATETIME,
    REASON               VARCHAR(64)
 );

出现ERROR 1064 (42000)的错误，如下

 root@localhost:mysql3306.sock [(none)]>use zxl;
 Database changed
 root@localhost:mysql3306.sock [zxl]>CREATE TABLE SA_ACT_ITEM
     -> (
     ->    ITEMID               BIGINT(14) NOT NULL,
     ->    REGION               INT(5),
     ->    ACTIONID             VARCHAR(32),
     ->    ITEMNAME             VARCHAR(64),
     ->    MINVALUE             BIGINT(16),
     ->    MAXVALUE             BIGINT(16),
     ->    USESCORE             BIGINT(16),
     ->    USETIMES             INT(5),
     ->    STARTDATE            DATETIME,
     ->    ENDDATE              DATETIME,
     ->    NOTES                VARCHAR(256),
     ->    CREATEDATE           DATETIME,
     ->    STATUS               INT(1),
     ->    STATUSDATE           DATETIME,
     ->    REASON               VARCHAR(64)
     -> );
 ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'MAXVALUE             BIGINT(16),
    USESCORE             BIGINT(16),
    USETIMES' at line 8
 root@localhost:mysql3306.sock [zxl]>

建议不要在创建表的过程中使用mysql保留字，往这里看https://dev.mysql.com/doc/refman/5.5/en/keywords.html

上述连接中看到MAXVALUE是mysql的保留字，当使用了mysql保留字，需要用反引号将其引起来，也就是键盘数字1旁边的键（` `）

下面将该字段使用反引号引起来，再次执行即可，如下：

 root@localhost:mysql3306.sock [zxl]>CREATE TABLE SA_ACT_ITEM
     -> (
     ->    ITEMID               BIGINT(14) NOT NULL,
     ->    REGION               INT(5),
     ->    ACTIONID             VARCHAR(32),
     ->    ITEMNAME             VARCHAR(64),
     ->    MINVALUE             BIGINT(16),
     ->    `MAXVALUE`             BIGINT(16),
     ->    USESCORE             BIGINT(16),
     ->    USETIMES             INT(5),
     ->    STARTDATE            DATETIME,
     ->    ENDDATE              DATETIME,
     ->    NOTES                VARCHAR(256),
     ->    CREATEDATE           DATETIME,
     ->    STATUS               INT(1),
     ->    STATUSDATE           DATETIME,
     ->    REASON               VARCHAR(64)
     -> );

 Query OK, 0 rows affected (1.20 sec)

 root@localhost:mysql3306.sock [zxl]>