SQL Sever 基本命令案例

创建表

用户表

create table Users(
User_Id varchar(50) not null primary key,
Password varchar(50) not null,
User_Type varchar(50),
Full_Name varchar(50),
Email varchar(50),
Phone varchar(50)
)

课程表

create table Courses(
course_id int primary key,
course_name varchar(50),
category varchar(50),
course_fees varchar(50),
detail_content varchar(500),
video_link varchar(500),
img varchar(500)
)

课程内容

create table Courses_Content(
Content_Id int primary key,
Course_Id int,
Content_Topic_Name varchar(50),
Detail_Content varchar(20),
Video_Link varchar(20)
)

购买信息

create table Courses_Registration(
User_Id int primary key,
Course_id int,
Payment_Id int
)

支付信息

create table Payment(
Payment_Id int primary key,
User_Id int,
Course_Id int,
Payment_Date varchar(50),
Payment_Amount varchar(50),
Payment_Type varchar(50),
Payment_Remarks varchar(50)
)

create table Payment(
pay_Id varchar(50),
Course_Id int,
user_id  varchar(50),
Payment_Date varchar(50)
)
)

删除表

drop table Users

插入数据

insert into Users (字段1,字段2) values('Charles','123456')

删除指定数据

语法：delete from 表名 where 条件;

delete from Users where uname = 'Charles6666666666';