mysql基本语句

访问所有库：show databases
新建库：create database
删除指定库：drop database
使用库：use
库名

显示所有表：show tables
创建表：
create table student{
name varchar(10) not null,
Age int not null,
Id primary key auto_increment
};
查看表：desc student;
更换表名：Alter table student rename to stu
添加字段：alter table student add address varchar(50) not null;
更改字段：alter table student change name newname char(20) not null;
删除字段：alter table student drop column age;

插入一条数据：insert into studnet name
‘张三’，’李四’，‘王泽’;
删除一条数据：delete from student where name=’张三’;
修改一条数据：update student set time=100 where age =20;

选择查找：select from student where age=20;