使用不同總和和減法函數的sql查詢

Question

我需要您來幫助我從一張表中爲金融交易及其行提取查詢，如下所示： 帳號：例如（4568643） Transactionamount：例如（1000美元） Kindoftransaction（借記卡或信用卡） transactionfile（並且這個數字保持和後鏈接到該交易的文件編號）

我需要你的幫助，以提取查詢每一個（transactionfile的淨餘額）全部 （Transactionamount ）從（Kindoftransaction）中持有「信用」，並從All（Transactionamount）的總和中扣除「借方」，其中 （ Accountnumber）是（4568643）

Answer 1

select transactionfile, sum(case when kindoftransaction = 'debit' then -1 else 1 end * transactionamount) 
from financial 
where accountnumber = 4568643 
group by transactionfile 

Answer 2

這有幫助嗎？ - 注意它幫助，如果你可以發佈你的表定義

DECLARE @transactions TABLE 
(
    [AccountNumber] INT NOT NULL, 
    [TransactionAmount] DECIMAL(18, 10) NOT NULL, 
    [KindOfTransaction] CHAR(1) NOT NULL, -- this could be better served as a boolean/bit field 
    [TransactionFile] INT NOT NULL 
) 

-- dummy data 
INSERT INTO @transactions VALUES(4568643, 100, 'C', 123) 
INSERT INTO @transactions VALUES(4568643, 150, 'C', 124) 
INSERT INTO @transactions VALUES(4568643, 50, 'D', 125) 
INSERT INTO @transactions VALUES(2345623, 100, 'C', 126) 
INSERT INTO @transactions VALUES(2345623, 79, 'C', 127) 

    -- here's the actual query to return your data using a common table expression 
;WITH cteAccountSummary (AccountNumber, TotalCredits, TotalDebits) AS (
    SELECT [AccountNumber], 
      SUM(
       CASE [KindOfTransaction] 
        WHEN 'C' THEN [TransactionAmount] 
        ELSE 0 
       END 
      ), 
      SUM(
       CASE [KindOfTransaction] 
        WHEN 'D' THEN [TransactionAmount] 
        ELSE 0 
       END 
      ) 
    FROM @transactions 
    GROUP BY [AccountNumber] 
) 
SELECT [AccountNumber], TotalCredits - TotalDebits AS 'NetFinancialPosition' 
FROM cteAccountSummary