按SUM值範圍分組SQL

Question

我有一個UserID和付款金額的表。我想彙總所有UserID的付款，然後將它們分組到範圍中。 「中等」（500英鎊到4999英鎊）和「大」（5000英鎊+）

因此，如果用戶標識已經支付了4英鎊100那麼他就會出現用戶名：76867範圍金額「小」

我當前的查詢給我的每一個用戶名和範圍的總分爲

SELECT 
SERIALNUMBER , Case when SUM(BATCHDETAIL.PAYMENTAMOUNT) > 1 and SUM(BATCHDETAIL.PAYMENTAMOUNT) < 500 then 'small' when SUM(BATCHDETAIL.PAYMENTAMOUNT) > 499 and SUM(BATCHDETAIL.PAYMENTAMOUNT) < 5000 then 'medium' when SUM(BATCHDETAIL.PAYMENTAMOUNT) > 5000 and SUM(BATCHDETAIL.PAYMENTAMOUNT) < 10000000 then 'large' END AS 'Sum of PAYMENTAMOUNT' 
FROM BATCHDETAIL 
WHERE (DATEOFPAYMENT > '2017/07/31') AND (DATEOFPAYMENT < '2018/08/01') 
GROUP BY SERIALNUMBER 

但我需要現在是總結多少用戶ID屬於每個範圍

Range | Count of UserIDs 
-------|---------------- 
Small |  23 
-------|---------------- 
Medium |  08 

（道歉爲格式不好）。任何幫助/問題將不勝感激一如既往！ 謝謝 Lee

Answer 1

你可以把你的select語句放到子查詢中。我假定Serialnumber是一個用戶標識，並且你想要統計每個組中不同的用戶。

 Select [Sum of PAYMENTAMOUNT] as 'Range', 
count(distinct Serialnumber) as 'Count of UserIDs' FROM 
      (
      SELECT 
      SERIALNUMBER , 
     Case when SUM(BATCHDETAIL.PAYMENTAMOUNT) > 1 and SUM(BATCHDETAIL.PAYMENTAMOUNT) < 500 then 'small' 
     when SUM(BATCHDETAIL.PAYMENTAMOUNT) > 499 and SUM(BATCHDETAIL.PAYMENTAMOUNT) < 5000 then 'medium' 
     when SUM(BATCHDETAIL.PAYMENTAMOUNT) > 5000 and SUM(BATCHDETAIL.PAYMENTAMOUNT) < 10000000 then 'large' END AS 'Sum of PAYMENTAMOUNT' 
      FROM BATCHDETAIL 
      WHERE (DATEOFPAYMENT > '2017/07/31') AND (DATEOFPAYMENT < '2018/08/01') 
     GROUP BY SERIALNUMBER 
     ) s 
group by [Sum of PAYMENTAMOUNT] 

Answer 2

您可以使用原始選擇定義CTE（公用表表達式），以便您可以輕鬆地將其結果分組以計算每個範圍的外觀。

with Ranges as 
(
    SELECT SERIALNUMBER , Case when SUM(BATCHDETAIL.PAYMENTAMOUNT) > 1 and SUM(BATCHDETAIL.PAYMENTAMOUNT) < 500 then 'small' when SUM(BATCHDETAIL.PAYMENTAMOUNT) > 499 and SUM(BATCHDETAIL.PAYMENTAMOUNT) < 5000 then 'medium' when SUM(BATCHDETAIL.PAYMENTAMOUNT) > 5000 and SUM(BATCHDETAIL.PAYMENTAMOUNT) < 10000000 then 'large' END AS 'Sum of PAYMENTAMOUNT' 
    FROM BATCHDETAIL 
    WHERE (DATEOFPAYMENT > '2017/07/31') AND (DATEOFPAYMENT < '2018/08/01') 
    GROUP BY SERIALNUMBER 
) 

select 'Sum of PAYMENTAMOUNT', count(*) as 'Count of UserIDs' 
from Ranges 
group by 'Sum of PAYMENTAMOUNT' 

Answer 3

通過它再次

select [Sum of PAYMENTAMOUNT] , count(SERIALNUMBER) 
from (
SELECT 
SERIALNUMBER , Case when SUM(BATCHDETAIL.PAYMENTAMOUNT) > 1 and SUM(BATCHDETAIL.PAYMENTAMOUNT) < 500 then 'small' 
when SUM(BATCHDETAIL.PAYMENTAMOUNT) > 499 and SUM(BATCHDETAIL.PAYMENTAMOUNT) < 5000 then 'medium' 
when SUM(BATCHDETAIL.PAYMENTAMOUNT) > 5000 and SUM(BATCHDETAIL.PAYMENTAMOUNT) < 10000000 then 'large' END AS [Sum of PAYMENTAMOUNT] 
    FROM BATCHDETAIL 
    WHERE (DATEOFPAYMENT > '2017/07/31') AND (DATEOFPAYMENT < '2018/08/01') 
GROUP BY SERIALNUMBER 
) as t1 
group by [Sum of PAYMENTAMOUNT] 

Answer 4

最有效的方法「的PAYMENTAMOUNT總和」用你的查詢作爲子查詢和組將做它在兩個層面（使用子查詢）：

select 
    count(*) as cnt 
, Case 
     when a.total_payment >= 10000000 then 'large+' 
     when a.total_payment >= 5000 then 'large' 
     when a.total_payment >= 500 then 'medium' 
     when a.total_payment >= 1 then 'small' 
     else 'too small' 
     end AS "Sum of PAYMENTAMOUNT" 

from (
    SELECT 
     SERIALNUMBER 
    , SUM(BATCHDETAIL.PAYMENTAMOUNT) as total_payment 
    FROM BATCHDETAIL 
    WHERE (DATEOFPAYMENT > '2017/07/31') AND (DATEOFPAYMENT < '2018/08/01') 
    GROUP BY SERIALNUMBER 
) as a 
group by "Sum of PAYMENTAMOUNT" 

順便說一句，你錯過了一些範圍。