当前位置：网站首页>MySQL replace primary key delete primary key add primary key

MySQL replace primary key delete primary key add primary key

2022-07-05 23:25:00 【Risehuxyc】

Add primary key

alter table humanidentity.citycode add primary key(adcode);

Delete primary key

alter table humanidentity.citycode drop primary key;

Replace primary key

alter table humanidentity.citycode drop primary key;
alter table humanidentity.citycode add primary key(adcode);

Inspection effect

desc humanidentity.citycode;

Reference documents ：

版权声明
本文为[Risehuxyc]所创，转载请带上原文链接，感谢
https://yzsam.com/2022/02/202202140322329644.html