有兩個數據表City表和Price表，CIty表的結構如下：
Price表的結構如下：
查詢每個城市最大的銷售價格，並以最大價格進行降序排列，選取前5條記錄，SQL語句的代碼如下：
select top 5 * from (select ROW_NUMBER() over(order by TmpTable.AdultyPrice desc) NID, City.*, TmpTable.AdultyPrice from City,(select MAX(Price.AdultyPrice) as AdultyPrice,PID from City inner join Price on City.LID = Price.PID group by Price.PID) as TmpTable where LID = PID) as tmp
運行結果：
