第五章：项目：我的租房网

--阶段1  
select top 5 * from hos_house as temp where   
HMID not in(select TOP 5 HMID from hos_house order by HMID)order by HMID  
  
--阶段2  
select dname,SNAME,HTID,PRICE,TOPIC,CONTENTS,HTIME,COPY from hos_street   
inner join hos_house on hos_house.SID=hos_street.SID  
inner join hos_district on hos_district.DID=hos_street.SDID  
where UID=(select UID from sys_user where UNAME='张三')  
  
--阶段3  
select htname,uname,dname,SNAME from hos_house  
inner join sys_user on sys_user.UID=hos_house.UID  
inner join hos_type on hos_type.HTID=hos_house.HTID   
inner join hos_street on hos_house.SID=hos_street.SID  
inner join hos_district on hos_district.DID=hos_street.SDID  
where Sdid in(select SDID from hos_street group by SDID having COUNT(SID)>1)