MySchool 05 租房网项目

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USE MASTER
GO
EXEC XP_CMDSHELL 'MKDIR E:\HOUSE1'
GO
SET NOCOUNT ON----不显示影响行数
IF EXISTS(SELECT * FROM SYS.DATABASES WHERE NAME='HOUSE')
DROP DATABASE HOUSE
GO
----创建数据库HOUSE
CREATE DATABASE HOUSE
ON
(NAME='HOUSE_DATA',
FILENAME='E:\HOUSE1\HOUSE_DATA.MDF',
SIZE=3,FILEGROWTH=1
)
LOG ON
(NAME='HOUSE_LOG',
FILENAME='E:\HOUSE1\HOUSE_DATA.LDF',
SIZE=10,FILEGROWTH=10%
)
GO
/*------创建表-----------*/
--------建表:sys_user(用户信息表)
USE HOUSE
GO
IF EXISTS(SELECT * FROM SYS.OBJECTS WHERE NAME='sys_user')
DROP TABLE sys_user
GO
CREATE TABLE sys_user
(UID INT IDENTITY (1,1) NOT NULL,---用户编号
UNAME VARCHAR(20) NOT NULL ,---姓名
UPASSWORD VARCHAR(20) NOT NULL---密码
)
GO
------建表sys_user的约束
ALTER TABLE sys_user
ADD CONSTRAINT PK_UID PRIMARY KEY (UID),
CONSTRAINT CK_UPASSWORD CHECK(LEN(UPASSWORD)>6)
GO
-----建表hos_district
IF EXISTS( SELECT * FROM SYS.OBJECTS WHERE NAME='hos_district')
DROP TABLE hos_district
GO
CREATE TABLE hos_district
(
DID INT IDENTITY (1,1) PRIMARY KEY NOT NULL ,---区县编号(主键)
DNAME VARCHAR(20) NOT NULL ----区县名称
)
GO
----建表hos_street
IF EXISTS (SELECT * FROM SYS.OBJECTS WHERE NAME='hos_street')
DROP TABLE hos_street
GO
CREATE TABLE hos_street
(
SID INT IDENTITY(1,1) PRIMARY KEY NOT NULL,---街道编号(主键)
SNAME VARCHAR(100) NOT NULL,---街道名称
SDID INT FOREIGN KEY (SDID) REFERENCES hos_district (DID) NOT NULL
)
GO
-----建表hos_type
IF EXISTS (SELECT * FROM SYS.OBJECTS WHERE NAME='hos_type')
DROP TABLE hos_type
GO
CREATE TABLE hos_type
(
HTID INT IDENTITY(1,1) PRIMARY KEY NOT NULL,----房屋类型编号(主键)
HTNAME VARCHAR(20) NOT NULL ---房屋类型
)
GO
-----建表：hos_house
IF EXISTS(SELECT * FROM SYS.OBJECTS WHERE NAME='hos_house')
DROP TABLE hos_house
GO
CREATE TABLE hos_house
(
HMID INT IDENTITY(1,1) NOT NULL,---(房屋信息编号)
UID INT NOT NULL,----用户编号
--DID INT NOT NULL,----区县编号
SID INT NOT NULL,----街道编号
HTID INT NOT NULL,---房屋类型编号
PRICE DECIMAL(18,2) NOT NULL,--价格
TOPIC VARCHAR(20) NOT NULL,---标题
CONTENTS VARCHAR(100) NOT NULL,---描述
HTIME DATETIME NOT NULL,---发布时间
COPY VARCHAR(20) ---备注
)
GO
-----添加约束(house)
ALTER TABLE hos_house
ADD CONSTRAINT PK_HMID PRIMARY KEY (HMID),
CONSTRAINT DF_PRICE DEFAULT(0) FOR PRICE,
CONSTRAINT CK_PRICE CHECK(PRICE>0),
CONSTRAINT DF_HTIME DEFAULT(GETDATE()) FOR HTIME,
CONSTRAINT CK_HTIME CHECK(HTIME<=GETDATE()),
CONSTRAINT FK_UID FOREIGN KEY (UID) REFERENCES sys_user(UID) ,
-- CONSTRAINT FK_DID FOREIGN KEY (DID) REFERENCES hos_district(DID),
CONSTRAINT FK_SID FOREIGN KEY (SID) REFERENCES hos_street (SID),
CONSTRAINT FK_HTID FOREIGN KEY(HTID) REFERENCES hos_type(HTID)
GO
--------添加测试数据
-----sys_user插入数据
INSERT INTO sys_user(UNAME,UPASSWORD) VALUES('张三','s217701')
INSERT INTO sys_user(UNAME,UPASSWORD) VALUES('李四','s217702')
INSERT INTO sys_user(UNAME,UPASSWORD) VALUES('王鑫','s217703')
INSERT INTO sys_user(UNAME,UPASSWORD) VALUES('张建','s217704')
INSERT INTO sys_user(UNAME,UPASSWORD) VALUES('李剑','s217705')
INSERT INTO sys_user(UNAME,UPASSWORD) VALUES('蒋以然','s217706')
INSERT INTO sys_user(UNAME,UPASSWORD) VALUES('王晓超','s217707')
INSERT INTO sys_user(UNAME,UPASSWORD) VALUES('张冬雪','s217708')
INSERT INTO sys_user(UNAME,UPASSWORD) VALUES('孙鹏','s217709')
INSERT INTO sys_user(UNAME,UPASSWORD) VALUES('蒋连昌','s217710')
GO
-----表hos_district插入数据
INSERT INTO hos_district (DNAME) VALUES('海淀区')
INSERT INTO hos_district (DNAME) VALUES('西城区')
INSERT INTO hos_district (DNAME) VALUES('东城区')
INSERT INTO hos_district (DNAME) VALUES('朝阳区')
INSERT INTO hos_district (DNAME) VALUES('景山区')
INSERT INTO hos_district (DNAME) VALUES('宣武区')
INSERT INTO hos_district (DNAME) VALUES('大兴')
INSERT INTO hos_district (DNAME) VALUES('丰台')
GO
----表hos_street插入数据
INSERT INTO hos_street (SNAME,SDID) VALUES('中关村',1)
INSERT INTO hos_street (SNAME,SDID) VALUES('苏州街',1)
INSERT INTO hos_street (SNAME,SDID) VALUES('万泉庄',1)
INSERT INTO hos_street (SNAME,SDID) VALUES('东四',3)
INSERT INTO hos_street (SNAME,SDID) VALUES('东单',3)
INSERT INTO hos_street (SNAME,SDID) VALUES('西四',2)
INSERT INTO hos_street (SNAME,SDID) VALUES('西单',2)
INSERT INTO hos_street (SNAME,SDID) VALUES('东湖',4)
INSERT INTO hos_street (SNAME,SDID) VALUES('八里庄',4)
INSERT INTO hos_street (SNAME,SDID) VALUES('双井',5)
INSERT INTO hos_street (SNAME,SDID) VALUES('陶然亭',5)
INSERT INTO hos_street (SNAME,SDID) VALUES('南菜园',6)
INSERT INTO hos_street (SNAME,SDID) VALUES('兴丰街',7)
INSERT INTO hos_street (SNAME,SDID) VALUES('黄村',7)
INSERT INTO hos_street (SNAME,SDID) VALUES('南苑街',8)
INSERT INTO hos_street (SNAME,SDID) VALUES('东铁营',8)
GO
-----表hos_type插入数据
INSERT INTO hos_type (HTNAME) VALUES('一室一卫')
INSERT INTO hos_type (HTNAME) VALUES('一室一厅')
INSERT INTO hos_type (HTNAME) VALUES('两室一卫')
INSERT INTO hos_type (HTNAME) VALUES('两室一厅')
INSERT INTO hos_type (HTNAME) VALUES('三室一厅')
INSERT INTO hos_type (HTNAME) VALUES('三室两厅')
GO
----表hos_house插入数据
INSERT INTO hos_house(UID,SID,HTID,PRICE,TOPIC,CONTENTS,HTIME,COPY)
VALUES(1,1,2,2600,'中关村','中关村一条街','2009-1-2','中关村')
INSERT INTO hos_house(UID,SID,HTID,PRICE,TOPIC,CONTENTS,HTIME,COPY)
VALUES(2,2,3,3600,'苏州街','苏州街一条街','2009-1-3','苏州街')
INSERT INTO hos_house(UID,SID,HTID,PRICE,TOPIC,CONTENTS,HTIME,COPY)
VALUES(3,3,4,4600,'万泉庄','万泉庄一条街','2009-1-4','万泉庄')
INSERT INTO hos_house(UID,SID,HTID,PRICE,TOPIC,CONTENTS,HTIME,COPY)
VALUES(1,3,2,1500,'万泉庄附近','万泉庄附近一条街','2009-7-2','万泉庄附近')
INSERT INTO hos_house(UID,SID,HTID,PRICE,TOPIC,CONTENTS,HTIME,COPY)
VALUES(1,5,2,2700,'东单','东单很多美食','2009-9-2','东单')
INSERT INTO hos_house(UID,SID,HTID,PRICE,TOPIC,CONTENTS,HTIME,COPY)
VALUES(3,1,2,2600,'中关村','中关村电脑城','2009-4-1','中关村')
INSERT INTO hos_house(UID,SID,HTID,PRICE,TOPIC,CONTENTS,HTIME,COPY)
VALUES(4,4,1,2000,'东四','东四一条街','2009-4-2','东四')
INSERT INTO hos_house(UID,SID,HTID,PRICE,TOPIC,CONTENTS,HTIME,COPY)
VALUES(5,6,3,3600,'西四','西四一条街','2009-1-2','西四')
INSERT INTO hos_house(UID,SID,HTID,PRICE,TOPIC,CONTENTS,HTIME,COPY)
VALUES(5,7,2,3600,'西单','西单购物城','2009-4-2','西单')
INSERT INTO hos_house(UID,SID,HTID,PRICE,TOPIC,CONTENTS,HTIME,COPY)
VALUES(6,2,2,2600,'苏州街','苏州街美食','2009-2-2','苏州街')
INSERT INTO hos_house(UID,SID,HTID,PRICE,TOPIC,CONTENTS,HTIME,COPY)
VALUES(7,8,3,2900,'朝阳东湖','朝阳东湖一景','2009-3-2','朝阳')
INSERT INTO hos_house(UID,SID,HTID,PRICE,TOPIC,CONTENTS,HTIME,COPY)
VALUES(8,3,1,700,'万泉庄','万泉庄一条街','2009-5-2','万泉庄')
INSERT INTO hos_house(UID,SID,HTID,PRICE,TOPIC,CONTENTS,HTIME,COPY)
VALUES(3,2,3,4200,'苏州街','苏州街二条街','2009-1-3','苏州街')
INSERT INTO hos_house(UID,SID,HTID,PRICE,TOPIC,CONTENTS,HTIME,COPY)
VALUES(4,2,3,4100,'苏州街','苏州街西街','2009-1-3','苏州街')
GO
[sql] view plain copy 在CODE上查看代码片派生到我的代码片
use HOUSE
select * from hos_house --房间信息表
select * from hos_district --区县表
select * from hos_street --街道表
select * from hos_type --房间类型表
--1.内容扩充：临时表
--如果表名前面有#，那么创建的表是临时表，位于tempdb数据库下
--的临时表文件夹下。
create table #mytemp2222
(
id int identity(1,1) primary key not null,
name nvarchar(20)
)
--使用临时表的好处：临时表中的数据当我们断开连接后自动释放，这样
--可以节省数据库服务器的空间
--任务一：分页显示查询出租房信息
--经典分页思路(一、双top，双order by 二、Row_number()函数三、临时表方式(和Row_Number()原理一致))
--将出租房屋记录批量插入临时表
--*******************方式一：双top，双order by分页************************
--查询输出第6条~第10条房屋出租信息
--did:区县编号(hos_district)
select top 5 *,hos_district.did
from hos_house,hos_street,hos_district
where hmid
not in(select top 5 hmid from hos_house)
and hos_house.sid=hos_street.sid
and hos_street.sdid=hos_district.did
--*******************方式二：Row_Number() over(order by id)***************
select * from
(select *,row_number() over(order by hmid) as myid
from hos_house) as temp
where myid between 6 and 10
--*******************方式三：临时表分页***********************************
--查询输出第6条~第10条房屋出租信息
use house
select identity(int,1,1) as myid, UID, SID, HTID, PRICE, TOPIC, CONTENTS, HTIME, COPY
into #housetemp
from hos_house
--通过临时表我们发现，其实实现分页只有两中思路，一种是通过双top，双order by方式，
--另外一种方式就是用一定的手段(可以使系统提供Row_NUmber()函数，也
--可以通过identity(int,1,1)来产生)，在现有表上加上一个自动增长列。
select * from #housetemp
where myid between 6 and 10
--如何将临时表释放
drop table #housetemp
--练习2——查询指定客户发布的出租房屋信息
--需求说明::
--查询“张三”发布的所有出租房屋信息，并显示房屋分布的街道、区县
select DNAME as 区县,SNAME as 街道,HTNAME as 户型,price as 价格,topic as 标题,contents as 描述,htime as 时间,copy as 备注
from hos_district,
hos_street,
hos_type,
hos_house
where hos_house.sid=hos_street.sid
and hos_house.htid=hos_type.htid
and hos_street.sdid=hos_district.did
and uid=
(
select uid from sys_user
where uname='张三'
)
--阶段3：练习——按区县制作房屋出租清单
--根据户型和房屋所在区县和街道,为至少有2个街道有房屋出租的区县制作出租房屋清单
--方式一(推荐)：
select HTNAME as 户型,UNAME as 姓名,DNAME as 区县, SNAME as 街道
from hos_type,sys_user,hos_district,hos_street,hos_house
where hos_house.sid=hos_street.sid
and hos_type.htid=hos_house.htid
and sys_user.uid=hos_house.uid
and hos_district.did=hos_street.sdid
and hos_street.sdid in
(
select hos_street.sdid
from hos_street,hos_district,
(select distinct sid from hos_house) as temp
where hos_street.sid=temp.sid
and hos_street.sdid=hos_district.did
group by hos_street.sdid
having count(hos_street.sid)>=2
)
--方式二：
select HTNAME as 户型,UNAME as 姓名,DNAME as 区县, SNAME as 街道
from hos_type,sys_user,hos_district,hos_street,hos_house
where hos_house.sid=hos_street.sid
and hos_type.htid=hos_house.htid
and sys_user.uid=hos_house.uid
and hos_district.did=hos_street.sdid
and hos_house.SID in
(
select hos_street.SID
from hos_street
where sdid in
(
select sdid
from hos_street,(select distinct(SID) from hos_house) as temp
where hos_street.sid=temp.sid
group by sdid
having count(hos_street.SID)>=2
)
)
--阶段4：按季度统计本年发布的房屋出租数量
--要求输出本年1月1日至今的全部出租房屋数量，各区县
--出租房屋数量以及各街道、户型出租房屋数量。
use house
DECLARE @year int
--SET @year = DATEPART(yy,GETDATE())
set @year=2009
SELECT tmp.quarter AS '季度',hos_district.DNAME AS '区县',hos_street.SNAME AS '街道',
hos_type.HTNAME AS '户型',tmp.cnt AS '房屋数量'
FROM (
SELECT SID,HTID,COUNT(*) cnt,DATEPART(qq,HTIME) quarter
FROM hos_house
WHERE DATEPART(yy,HTIME)=@year
GROUP BY DATEPART(qq,HTIME),SID,HTID
) tmp
--INNER JOIN sys_user ON (tmp.UID=sys_user.UID)
INNER JOIN hos_street ON(tmp.SID=hos_street.SID)
INNER JOIN hos_district ON(hos_street.SDID=hos_district.DID)
INNER JOIN hos_type ON(tmp.HTID=hos_type.HTID)
UNION
SELECT DATEPART(qq,HTIME),hos_district.DNAME,' 小计 ',' ',COUNT(*) AS '房屋数量'
FROM hos_house
INNER JOIN hos_street ON(hos_house.SID=hos_street.SID)
INNER JOIN hos_district ON(hos_street.SDID=hos_district.DID)
WHERE DATEPART(yy,HTIME)=@year
GROUP BY DATEPART(qq,HTIME),hos_district.DNAME
union
SELECT DATEPART(qq,HTIME),' 合计 ',' ',' ',COUNT(*) AS '房屋数量'
FROM hos_house
WHERE DATEPART(yy,HTIME)=@year
GROUP BY DATEPART(qq,HTIME)

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