两种形式的分组排名

--建表

CREATE TABLE TEST

(

[ID] INT,

IDS DECIMAL(18,4),

[TIME] DATETIME

)

--测试数据

INSERT INTO TEST

SELECT 20.36,1,'2009-09-30'

UNION ALL

SELECT 20.36,1,'2009-09-30'

UNION ALL

SELECT 14.37,1,'2009-09-30'

UNION ALL

SELECT 23.56,1,'2009-09-30'

UNION ALL

SELECT 25.16,1,'2009-09-30'

UNION ALL

SELECT 20.36,2,'2009-06-30'

UNION ALL

SELECT 14.37,2,'2009-06-30'

UNION ALL

SELECT 23.56,2,'2009-06-30'

UNION ALL

SELECT 25.16,2,'2009-06-30'

UNION ALL

SELECT NULL,2,'2009-06-30'

--形式1：

--此形式排名结果类似于1 2 2 3 的结果显示

SELECT *,ORID=(SELECT COUNT(DISTINCT IDS)--IDS 排序字段

FROM TEST

WHERE IDS>=A.IDS AND [ID]=A.[ID] AND [TIME]=A.[TIME]

GROUP BY [TIME],[ID] --分类字段

)

FROM TEST AS A

--形式2：

--此形式排名结果类似于1 2 2 3 的结果显示

SELECT *,ORID=CASE

WHEN IDS IS NULL THEN NULL

ELSE ISNULL((SELECT COUNT(IDS)--IDS 排序字段

FROM TEST

WHERE IDS>A.IDS AND [ID]=A.[ID] AND [TIME]=A.[TIME]

GROUP BY [TIME],[ID] --分类字段

),0)+1 END

FROM TEST AS A