MySQL 字段注釋添加和查看

查看建表SQL

desc sys_user;

添加注釋、查看注釋

1、建表時添加

create table sys_user(
uid int primary key auto_increment,
user_number varchar(30) comment '用戶編號',
user_name varchar(255) comment '用戶名'
) comment '用戶表';
show create table sys_user;

2、建表后添加

alter table sys_user modify uid int comment '主鍵';
alter table sys_user comment '用戶表';
show create table sys_user;

#查看字段上的注釋
show  full  columns  from  sys_user;

查詢數據庫的表信息

use information_schema;
select * from TABLES where TABLE_SCHEMA='db_name';