按范圍SQL Server分組

Question

UPDATE !!!!

我用其各自的輸出構建了以下SQL查詢：

我想有效地向每個聚合添加標簽，如下所示：

coupon percent   |   income level
-----------------------------------
 .023434355      |   0-20000
 .054888999      |   20000-35000
 .010000002      |   35000-100000

有什么建議么？

Answer 1

您可以將CASE語句添加到GROUP BY ，例如

GROUP BY CASE 
    WHEN storeAvgIncome <= 20000 THEN '0-20000' 
    WHEN storeAvgIncome > 20000 AND storeAvgIncome <=  35000 THEN '20000-35000' 
    WHEN storeAvgIncome > 35000 AND storeAvgIncome <= 100000 THEN '35000-100000'
    END

然后將其添加到您的SELECT

SELECT 
    CASE 
        WHEN storeAvgIncome <= 20000 THEN '0-20000' 
        WHEN storeAvgIncome > 20000 AND storeAvgIncome <=  35000 THEN '20000-35000' 
        WHEN storeAvgIncome > 35000 AND storeAvgIncome <= 100000 THEN '35000-100000'
        END AS [income level]