MySQL ON重複密鑰語法錯誤

Question

我想通過PHP使用「ON DUPLICATE KEY」查詢。這是它看起來像

INSERT INTO `application`.`invites` (`from`, `to`) VALUES ('123', '321') ON DUPLICATE KEY UPDATE `from`=VALUES(from), `to`=VALUES(to) 

我做錯了什麼？

#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 'from), `to`=VALUES(to)' at line 1 

Answer 1

你需要反引號周圍from和to，到處都使用它們：

INSERT INTO `application`.`invites` (`from`, `to`) 
    VALUES ('123', '321') 
    ON DUPLICATE KEY UPDATE `from` = VALUES(`from`), `to` = VALUES(`to`) 

其實，這些都是列非常糟糕的名字。您應該避免使用保留字作爲列名。