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6 Commits

Author SHA1 Message Date
GuanM
6b3de7ecba 外键约束 2024-11-19 16:29:23 +08:00
GuanM
6134ee513b 主键约束 2024-11-19 16:19:58 +08:00
GuanM
8d5940af35 创建表 2024-11-19 16:11:36 +08:00
GuanM
d2efbf40cb 数据的删除 2024-11-19 16:03:00 +08:00
GuanM
2639b09f0a 通配符[]的使用 2024-11-19 15:58:54 +08:00
GuanM
c4273f683e 数据的插入 2024-11-19 15:49:18 +08:00
6 changed files with 127 additions and 0 deletions

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sqlcmd -S localhost -U sa -P '<123123Aa!@>'
CREATE DATABASE MyDb;
go
USE MyDb;
go
CREATE TABLE t_user1 (userId INT PRIMARY KEY, name VARCHAR(32), password VARCHAR(32) ,phone VARCHAR(11),email VARCHAR(32));
go
CREATE TABLE t_user2 (name VARCHAR(32), phone VARCHAR(11), email VARCHAR(32), PRIMARY KEY (name, phone));
go

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sqlcmd -S localhost -U sa -P '<123123Aa!@>'
CREATE DATABASE TestDb;
go
USE TestDb;
go
CREATE TABLE t_emp
(
id INT,
name VARCHAR(32),
deptId INT,
salary FLOAT
)
go

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sqlcmd -S localhost -U sa -P '<123123Aa!@>'
CREATE DATABASE MyDb;
go
USE MyDb;
go
CREATE TABLE t_class (id INT PRIMARY KEY, name VARCHAR(22));
go
CREATE TABLE t_student (id INT PRIMARY KEY, name VARCHAR(22), classId INT ,CONSTRAINT fk_stu_class1 FOREIGN KEY (classId) REFERENCES t_class(id));
go

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-- ********** create database ********** --
-- ********** Begin ********** --
CREATE DATABASE website;
-- ********** End ********** --
go
use website
go
-- ********** create table ********** --
-- ********** Begin ********** --
CREATE TABLE shopping (
ID int IDENTITY(1,1) NOT NULL,
Name varchar(20) NOT NULL,
address varchar(30) NOT NULL
);
-- ********** End ********** --
go
SET NOCOUNT ON
insert into shopping (Name, address) values ('eBay', 'www.ebay.com')
go
SET NOCOUNT ON
-- ********** insert ********** --
-- ********** Begin ********** --
insert into shopping (Name, address) values ('amazon', 'www.amazon.com');
-- ********** End ********** --
go
SET NOCOUNT ON
-- ********** delete ********** --
-- ********** Begin ********** --
DELETE FROM shopping WHERE Name = 'eBay';
-- ********** End ********** --
go

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-- ********** create database ********** --
-- ********** Begin ********** --
create database school
-- ********** End ********** --
go
use school
go
-- ********** create table ********** --
-- ********** Begin ********** --
create table teacher(
ID int not null,
Name varchar(20) not null,
sex char(2) not null,
Phone varchar(20) null
)
-- ********** End ********** --
go
SET NOCOUNT ON
-- ********** insert ********** --
-- ********** Begin ********** --
insert into teacher(ID, Name, sex, Phone)
values(1, 'Lucy', 'F', NULL)
-- ********** End ********** --
go

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USE Mall
Go
SET NOCOUNT ON
---------- retrieving with wildcard [] ----------
-- ********** Begin ********** --
SELECT prod_id, prod_name, prod_price
FROM Products
WHERE prod_name NOT LIKE 'B%';
-- ********** End ********** --
GO