Question

需要从信用卡和借记卡帐号相同的借方总计中减去信用总额。如果某个值仅存在于借方帐号，则无需减去任何内容，只需获取该值即可。

一个名为18_7_ChartOfAccounts的表如下所示：

ID | AccountNumber
-------------
1  | 2310
2  | 2380

另一个名为2_1_journal的表格如下：

ID | Amount | DebitAccount | CreditAccount
-------------------------------------------
1  | 25.00  | 2310         | 2380
2  | 200.00 | 2310         | 2380
3  | 4.00   | 2380         | 2310
4  | 200.00 | 2380         | 2310
5  | 50.00  | 2380         | 2620

根据建议创建的查询，该查询汇总Amount列中DebitAccount中的值相同的所有值。

查询执行以下操作：SUM(Amount) FROM table 2_1_journal表DebitAccount中的2_1_journal与表AccountNumber中的18_7_ChartOfAccounts相同< / p>

$query_debit_beginning = "SELECT SUM(j.Amount), j.DebitAccount FROM 18_7_ChartOfAccounts AS c LEFT JOIN 2_1_journal AS j ON (c.AccountNumber = j.DebitAccount) group by j.DebitAccount";

不明白如何减去其他的总和。

需要像这样输出

帐号为2310，值为21.00（25 + 200-4-200）

帐号为2380，值为29.00（4 + 200 + 50-25-200）

帐号为2620，值为-50.00（0（DebitAccount营业额） - 50（CreditAccount营业额））

查询应如下：

（SUM(Amount) FROM table 2_1_journal表DebitAccount中的2_1_journal与表AccountNumber中的18_7_ChartOfAccounts相同

然后

SUM(Amount) FROM table 2_1_journal表CreditAccount中的2_1_journal与表AccountNumber中的18_7_ChartOfAccounts相同

然后

如果DebitAccount等于CreditAccount，则从SUM(Amount) CreditAccount减去SUM(Amount) DebitAccount

不知道如何创建此类查询。请，建议。

根据建议试图为select添加条件。这是修改。代码是否正确？尝试并且似乎在必要时起作用

SELECT
a.AccountNumber, 
IFNULL( d.Amount, 0 ) - IFNULL( c.Amount, 0 ) AS Amount

FROM 18_7_ChartOfAccounts AS a

LEFT JOIN (
SELECT
    DebitAccount, RecordYear,
    SUM( Amount ) AS Amount
FROM 2_1_journal WHERE RecordYear = 2013
GROUP BY DebitAccount
) d ON (a.AccountNumber = d.DebitAccount)

LEFT JOIN (
SELECT
    CreditAccount, RecordYear,
    SUM( Amount ) AS Amount
FROM 2_1_journal WHERE RecordYear = 2013
GROUP BY CreditAccount
) c ON (a.AccountNumber = c.CreditAccount)

Answer 1

SELECT
    a.AccountNumber,
    IFNULL( d.Amount, 0 ) - IFNULL( c.Amount, 0 ) AS Amount

FROM 18_7_ChartOfAccounts AS a

LEFT JOIN (
    SELECT
        DebitAccount,
        SUM( Amount ) AS Amount
    FROM 2_1_journal
    GROUP BY DebitAccount
) d ON a.AccountNumber = d.DebitAccount

LEFT JOIN (
    SELECT
        CreditAccount,
        SUM( Amount ) AS Amount
    FROM 2_1_journal
    GROUP BY CreditAccount
) c ON a.AccountNumber = d.CreditAccount

Answer 2

这样的事情应该做（未经测试）

SELECT a.ID, a.AccountNumber, IFNULL( CreditAmount, 0 ) - IFNULL( DebitAmount, 0 ) 
FROM 18_7_ChartOfAccounts a
LEFT OUTER JOIN (SELECT DebitAccount AS AccountNo, SUM(Amount) AS DebitAmount FROM 2_1_journal GROUP BY DebitAccount) b ON a.AccountNumber = b.AccountNo
LEFT OUTER JOIN (SELECT CreditAccount AS AccountNo, SUM(Amount) AS CreditAmount FROM 2_1_journal GROUP BY CreditAccount) c ON a.AccountNumber = c.AccountNo
LEFT OUTER JOIN 2_1_journal c ON a.AccountNumber = c.CreditAccount
GROUP BY a.ID, a.AccountNumber

如果DebitAccount == CreditAccount，Mysql从SUM（金额）CreditAccount减去SUM（金额）DebitAccount

2 个答案: