在MySQL 5.6中现在使用“（）”的正确语法是什么？

Question

那么，我已经有一段时间了，需要一些帮助。谢谢！

ERROR: Error 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 '() now, 

    `Body` TEXT NULL, 

    `Created` TIMESTAMP NULL COMMENT 'This descrbes th' at line 2 



CREATE TABLE IF NOT EXISTS `Newsletters` (

    `Subject` INT NOT NULL DEFAULT() now, 

    `Body` TEXT NULL, 

    `Created` TIMESTAMP NULL COMMENT 'This descrbes the newsletter.', 

    PRIMARY KEY (`Subject`)) 

ENGINE = InnoDB 



SQL script execution finished: statements: 36 succeeded, 1 failed 



Fetching back view definitions in final form. 

Could not get definition for ABC_Blue.view1 from server 

1 views were read back. 

Answer 1

错位括号，尝试

DEFAULT now(), 

但你想现在的INT列默认也许对于timestamp列，在这种情况下，你做的？

Created TIMESTAMP DEFAULT CURRENT_TIMESTAMP, 

看看这里即使该字段是日期时间，您仍然无法将其默认设置为NOW。

Docs