1.创建表

create table test_tb(
Id int primary key not null,
Name varchar(50) not null,
Sex char(4) null,
Age int null
);

2.插入单条数据

insert into test_tb(Id,Name,Sex,Age) values(1,'PZ','男',10);

3.插入多条数据

insert into test_tb(Id,Name,Sex,Age)
values
(2,'PZ1','男',10),
(3,'PZ2','男',10),
(4,'PZ3','男',10);

4.查询所有数据

select * from test_tb

5.根据条件查询

select * from test_tb where Id=1

6.修改一列数据

update test_tb set Name='PK'WHERE Id=1

7.修改多列数据

update test_tb set Name='ZPP',Age=20 WHERE Id=2

8.根据条件删除

delete from test_tb where Id=1

9. 删除所有数据(from 可以省略)

delete test_tb