同一天，同一客户但不同分行交易

Question

我有一个 table，其中包含帐号、交易日期、交易分行和金额。

我想生成一个包含以下信息的列：

if that specific customer, made a transaction from different branches on the same day.

结果示例如下：

    AccountNumber   Transaction_branch  tran_Date   Amount  Different_Branch_Tran
    11452           331                 20/07/2020  500     no
    11452           331                 21/07/2020  500     no
    5432            14                  22/07/2020  500     no
    5432            14                  22/07/2020  500     no
    11452           14                  24/07/2020  500     yes
    11452           420                 24/07/2020  500     yes
    11452           14                  26/07/2020  500     no

我有一个代码可以显示客户是否在同一天进行了相同数量的交易。但是我不知道如何修改或更改此代码以获得我想要的结果。

 select 
    a.*,
    case when count(*) over(partition by trandate, accountnumber, amount) > 1 then 'Yes' else 'No' end SameAmountSameDay
from Tran_table  a 
where trandate> '20190701'

Answer 1

一种方法是使用 EXISTS 和子查询，因为您不能在窗口 COUNT:

中使用 DISTINCT

SELECT TT.AccountNumber,
       TT.Tranasction_branch,
       TT.tran_date,
       TT.Amount,
       CASE WHEN EXISTS(SELECT 1
                        FROM dbo.Tran_table sq
                        WHERE sq.AccountNumber = TT.AccountNumber
                          AND sq.Tran_Date = TT.Tran_Date
                          AND sq.Tranasction_branch != TT.Transaction_branch) THEN 'Yes' ELSE 'No' END AS Different_Branch_Tran
FROM dbo.Tran_table TT
WHERE TT.trandate > '20190701'; --This is called Tran_Date in your sample data, are these different columns?

Answer 2

.....
case when 
min(Transaction_branch) over(partition by AccountNumber, tran_Date, Amount) 
= 
max(Transaction_branch) over(partition by AccountNumber, tran_Date, Amount) 
then 'No' else 'Yes' 
end as SameAmountSameDayDifferentBranch
.........

同一天，同一客户但不同分行交易

Same day, same customer but different branch transactions

sql-server

count

partition

case-when