介绍几种关于Mysql数据库增删改查的最简单写法

添加数据insert into user values(1,"lirixing","boy");

查询select * from user;

更新update user set name="liri" where id=1;

删除delete from user;

查询总条数select count(1) from user;

查询一个数的和select sum(id) from user;