MySQL--Common SQL commands

Show database

show databases;

Select database

use 数据库名

Show all tables in the library

show tables;
或者 show tables from 数据库名;

Show current database

select database();

Create table

create table stuinfo(
id int,
name varchar(20)
);

Add a primary key to the table

alter table 表名 add primary key (字段名);

Show table structure

desc 表名;

View table data

select * from 表名;

Insert data

insert into stuinfo(id,name) values(1,"john");

delete data

delete from stuinfo where id = 1;

change the data

update stuinfo set name="lilei" where id =1;