如何在Mysql中删除唯一约束？

Question

我的代码

alter table mytable drop unique constraint uk_mytable;

但显示以下错误...

"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 'unique constraint username' at line 1"

Answer 1

试试这个

alter table mytable drop uk_mytable;