来自多个MySQL表的净收益

我有两个mysql表，一个是tblvouchers，另一个是tblinvoices，我正在开发一个小型会计系统。这两个表都有不同的字段帐户代码，借记卡和信用额度字段等。现在我想从两个表中计算总净余额代码明智我用多个小临时表和查询实现这一点，但我想用单个查询来实现这一点，请任何人指导我如何实现这与单个MySQL查询。来自多个MySQL表的净收益

我的示例表如下。

TBLVOUCHERS

VOU_ACC_CODE DR_AMOUNT CR_AMOUNT 
------------ --------- ----------- 
3-01-0001    0   4600 
3-01-0002   10000   0 
3-01-0005   15000   0 
6-02-0001    0  27500 
6-02-0002    0  315432 
6-03-0001   27500   0

TBLINVOICES

ACCOUNT_CODE DR_AMOUNT CR_AMOUNT 
------------ --------- ----------- 
3-01-0001    0  11400 
3-01-0005    0  10454.2 
3-01-0001    0   4600 
3-01-0001    0   7500 
6-01-0002   1250   0 
6-02-0007    0   750 
7-01-0001    0   1250 


ACCOUNT_CODE DR_AMOUNT CR_AMOUNT NET_BALANCE 
------------ --------- ----------- ----------- 
3-01-0001   0  28100  -28100 
3-01-0002  10000   0  10000  
3-01-0005 4545.8   0  4545.8 
6-02-0001   0  27500  -27500 
6-02-0002   0  315432  -315432 
6-02-0007   0  750   -750 
6-03-0001  27500   0   27500 
7-01-0001   0  1250   -1250

我的PHP代码：

$empty = mysql_query("TRUNCATE `tblaccountingledger`"); 
    $VOUCHERS = mysql_query(" 
    INSERT INTO `tblaccountingledger` 
    SELECT 
    `tblvouchers`.`VOU_DATE`, 
    `tblvouchers`.`VOU_NO`, 
    `tblvouchers`.`BILL_NO`, 
    `tblvouchers`.`VOU_CROSS_ACC_CODE`, 
    `tblcharts`.`ACC_NAME`, 
    `tblvouchers`.`VOU_NARRATION`, 
    `tblvouchers`.`DR_AMOUNT`, 
    `tblvouchers`.`CR_AMOUNT` 
    FROM 
    `tblvouchers` 
    INNER JOIN `tblcharts` 
     ON (
     `tblvouchers`.`VOU_CROSS_ACC_CODE` = `tblcharts`.`ACC_CODE` 
    ) 
    WHERE `tblvouchers`.`VOU_ACC_CODE` = '".$ACC_CODE."' 
    AND `tblvouchers`.`VOU_DATE` BETWEEN '".$START_DATE."' 
    AND '".$END_DATE."'; 
    "); 


    $INVOICES = mysql_query(" 
    INSERT INTO `tblaccountingledger` 
    SELECT 
    `tblinvoices`.`INVOICE_DATE`, 
    `tblinvoices`.`INVOICE_NO`, 
    `tblinvoices`.`BILL_NO`, 
    `tblinvoices`.`CROSS_ACCOUNT_CODE`, 
    `tblcharts`.`ACC_NAME`, 
    `tblinvoices`.`NARRATION`, 
    `tblinvoices`.`DR_AMOUNT`, 
    `tblinvoices`.`CR_AMOUNT` 
    FROM 
    `shop_system`.`tblinvoices` 
    INNER JOIN `shop_system`.`tblcharts` 
     ON (
     `tblinvoices`.`CROSS_ACCOUNT_CODE` = `tblcharts`.`ACC_CODE` 
    ) 
    WHERE `tblinvoices`.`ACCOUNT_CODE` = '".$ACC_CODE."' 
    AND `tblinvoices`.`INVOICE_DATE` BETWEEN '".$START_DATE."' 
    AND '".$END_DATE."'; 
    ");

来源

2014-11-06 khizar123456

为什么净额为3-01-0001'-28100'，那么你已经在一个帐户了'4600'和另一个'11400'？ 4600 + 11400 = 28100怎么样？ – 2014-11-06 19:02:23

@Marc B，对不起，这是我的示例表。 – khizar123456 2014-11-06 19:04:19

首先，你需要从这两使用创建一个表。

SELECT VOU_ACC_CODE, SUM(DR_AMOUNT), SUM(CR_AMOUNT), (SUM(DR_AMOUNT) - SUM(CR_AMOUNT)) AS NET_BALANCE FROM 
    (SELECT VOU_ACC_CODE, DR_AMOUNT, CR_AMOUNT FROM TBLVOUCHERS 
    UNION ALL 
    SELECT ACCOUNT_CODE AS VOU_ACC_CODE, DR_AMOUNT, CR_AMOUNT FROM TBLINVOICES) AS tbl1 
GROUP BY VOU_ACC_CODE

见SQLFiddle：使用GROUP BY然后你只需汇总数据http://sqlfiddle.com/#!2/07a12/10

来源

2014-11-06 19:23:25 Heavy

来自多个MySQL表的净收益

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