mysql - #1064 - 您的 SQL 语法有错误；

Question

每当我想在 MySQL 中创建表时，我都会收到以下错误。

#1064 - 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 '( 32 ) NOT NULL DEFAULT CURRENT_TIMESTAMP , `visitor_day` SMALLINT( 2 ) NOT NUL' at line 7

代码：

CREATE TABLE `visitors_table` (
`ID` INT( 11 ) NOT NULL AUTO_INCREMENT PRIMARY KEY ,
`visitor_ip` VARCHAR( 32 ) NULL ,
`visitor_browser` VARCHAR( 255 ) NULL ,
`visitor_hour` SMALLINT( 2 ) NOT NULL DEFAULT '00',
`visitor_minute` SMALLINT( 2 ) NOT NULL DEFAULT '00',
`visitor_date` TIMESTAMP( 32 ) NOT NULL DEFAULT CURRENT_TIMESTAMP ,
`visitor_day` SMALLINT( 2 ) NOT NULL ,
`visitor_month` SMALLINT( 2 ) NOT NULL ,
`visitor_year` SMALLINT( 4 ) NOT NULL ,
`visitor_refferer` VARCHAR( 255 ) NULL ,
`visitor_page` VARCHAR( 255 ) NULL
) TYPE = MYISAM ;

Answer 1

此处修复了几个错误：

CREATE TABLE `visitors_table` (
`ID` INT( 11 ) NOT NULL AUTO_INCREMENT PRIMARY KEY ,
`visitor_ip` VARCHAR( 32 ) NULL ,
`visitor_browser` VARCHAR( 255 ) NULL ,
`visitor_hour` SMALLINT( 2 ) NOT NULL DEFAULT '00',
`visitor_minute` SMALLINT( 2 ) NOT NULL DEFAULT '00',
`visitor_date` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
`visitor_day` SMALLINT( 2 ) NOT NULL ,
`visitor_month` SMALLINT( 2 ) NOT NULL ,
`visitor_year` SMALLINT( 4 ) NOT NULL ,
`visitor_refferer` VARCHAR( 255 ) NULL ,
`visitor_page` VARCHAR( 255 ) NULL
) ENGINE = MYISAM ;

Answer 2

TIMESTAMP不支持精度。直到 MySQL 5.6，也就是说，亚秒级分辨率是可能的。

( 32 )从TIMESTAMP定义中删除。

Answer 3

TIMESTAMP没有尺寸，您应该使用engine而不是type

CREATE TABLE `visitors_table` (
`ID` INT( 11 ) NOT NULL AUTO_INCREMENT PRIMARY KEY ,
`visitor_ip` VARCHAR( 32 ) NULL ,
`visitor_browser` VARCHAR( 255 ) NULL ,
`visitor_hour` SMALLINT( 2 ) NOT NULL DEFAULT '00',
`visitor_minute` SMALLINT( 2 ) NOT NULL DEFAULT '00',
`visitor_date` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ,
`visitor_day` SMALLINT( 2 ) NOT NULL ,
`visitor_month` SMALLINT( 2 ) NOT NULL ,
`visitor_year` SMALLINT( 4 ) NOT NULL ,
`visitor_refferer` VARCHAR( 255 ) NULL ,
`visitor_page` VARCHAR( 255 ) NULL
) engine = MYISAM ;