MySQL最基础常用语句

MySQL创建user表：
CREATE TABLE `user` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `name` varchar(32) DEFAULT NULL,
  `password` varchar(32) DEFAULT NULL,
  `create_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
  `phone` varchar(11) NOT NULL,
  `email` varchar(32) NOT NULL,
  `type` int(11) DEFAULT NULL,
  PRIMARY KEY (`id`)
)
user表增加一个性别字段
alter table user add sex varchar(10) not null;

修改性别字段为年龄
alter table user change sex age int(4) not null;

删除年龄字段
alter table user drop COLUMN age

查询数据
select * from user

select name,phone,email from user

select name,phone,email from user where name='张三'

select name,phone,email from user where name like '%张%'//模糊查询，查询名字里带“张”的

增加记录

insert into user（name,phone,email）values('sun','17798746531','[email protected]')

修改数据

update user set name='timy' where id=9

删除数据

delete from user where name = 'timy'