MySQL插入记录

Question

我有这个SQL查询：

insert into messages 
(message, hash, date_add) 
values
('message', 'hash', NOW()) 
ON DUPLICATE KEY IGNORE

哈希是唯一的，查询有什么问题？我收到了错误：

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 'IGNORE' at line 1

Answer 1

根据MySQL doc，语法应为：

INSERT IGNORE INTO messages (message, hash, date_add)
  VALUES('message', 'hash', NOW());