我的租房网

[sql] view plain copy 在CODE上查看代码片派生到我的代码片
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)