当前位置：网站首页>MySQL primary key constraint deletion

MySQL primary key constraint deletion

2022-06-30 00:20:00 【CSDN Q & A】 

DROP TABLEIF    EXISTS emp;CREATE TABLE emp (    id INT PRIMARY KEY,    enam VARCHAR ( 50 ) UNIQUE,    joindate date NOT NULL,    salary DOUBLE ( 7, 2 ) NOT NULL,    bonus DOUBLE ( 7, 2 ) DEFAULT 0 );ALTER TABLE emp DROP PRIMARY KEY;

After running, it appears > 1091 - Can't DROP 'PRIMARY'; check that column/key exists How to solve

原网站

版权声明
本文为[CSDN Q & A]所创，转载请带上原文链接，感谢
https://yzsam.com/2022/180/202206221453018491.html

边栏推荐

猜你喜欢

随机推荐