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SQL 2005使用PARTITION and Rank實現group by to
來源：程序員人生 發布時間：2014-04-10 14:19:25 閱讀次數：3432次
DEMO1：
select * from
(
select Player, Year, HomeRuns, Rank() over (Partition BY Player order by HomeRuns DESC, Year DESC) as Rank
from
Batting
) tmp
where Rank = 1
DEMO2：
WITH ttts AS (
Select JournalID,ParentID,RANK() OVER (partition by ParentID orDER BY JournalID asc) AS rt From Journal_Category Where ParentID in (Select JournalID from Journal_Category where ParentID = 1) Group By ParentID,JournalID
)
Select * from ttts where ttts.rt <=1
輕松實現Group By Top
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