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Sql Server、Access數(shù)據(jù)排名的實現(xiàn)方法
但是,在SQL SERVER 2005 之前,SQL SERVER 2000 并沒有提供這個直接的函數(shù)供我們使用,同樣 ACCESS 也是如此。
下面我們分2種情況,來寫出數(shù)據(jù)排名的實現(xiàn)過程。測試數(shù)據(jù)如下:
Access
復制代碼 代碼如下:
select name, score, (select iif(isnull(sum(1)), 1, sum(1) + 1) from score_rank where score > a.score) as rank from score_rank a order by score desc
sqlserver
復制代碼 代碼如下:
select name, score, (select ISNULL(sum(1),0) + 1 from score_rank where score > a.score) as rank from score_rank a order by score desc
對于 SQL SERVER 2005 及更高版本
復制代碼 代碼如下:
SELECT name, score, RANK() OVER (ORDER BY score DESC) AS [rank], DENSE_RANK() OVER (ORDER BY score DESC) AS [rank1], NTILE(4) OVER(ORDER BY score DESC) AS [rank2] FROM score_rank ORDER BY score DESC;
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