Question

我需要在三个不同的组（30％，30％和40％）中对查询结果进行分区。如果我使用NTILE（3）函数，结果将分为三个等于组（33％，33％，33％）。我该怎么办？

这是我的查询架构：

;WITH TMP1 AS (
    SELECT
        Column0,
        ISNULL(SUM(Column1),0) AS Val
    FROM MyTable
    GROUP BY Column0
),
TMP2 AS (
SELECT NTILE (3) OVER (ORDER BY Column0 DESC) AS MyGroup, Val
FROM TMP1
)
SELECT MyGroup, ISNULL(SUM(Val),0) as Val
FROM TMP2
GROUP BY MyGroup
ORDER BY MyGroup

非常感谢

Answer 1

使用ntile(10)并(1,2,3) 30％，(4,5,6) 30％，(7,8,9,10) 40％

TSQL：按百分比划分结果

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