Question

我需要您帮助我从一个表中提取金融交易及其行的查询，如下所示：帐号：例如（4568643） Transactionamount：例如（1000美元） Kindoftransaction（借记或贷记） transactionfile（此编号包含链接到此事务的文件编号）

我需要你的帮助来在总和之后提取每个（事务文件）的净余额的查询（Transactionamount）持有（Kindoftransaction）的“信用”并从All（Transactionamount）的总和减去它“借记”所在的地方（帐号）是（4568643）

Answer 1

这有帮助吗？ - 请注意，如果您可以发布表格定义

，这会有所帮助

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

Answer 2

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

Sql查询使用不同的sum和subtract函数

2 个答案: