Question

我有两个mysql表，一个是tblvouchers，第二个是tblinvoices，我正在研究一个小会计系统。两个表都有不同的字段帐户代码，借方和贷方金额字段等。现在我想计算总净余额从两个表代码明智我得到了多个小临时表和查询，但我想用单个查询实现这一点，请任何人指导我如何用单个mysql查询实现这一点。

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."';
  ");

Answer 1

首先，您需要使用UNION ALL从这两个表创建一个表。然后，您只需使用GROUP BY汇总数据：

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

参见SQLFiddle：http://sqlfiddle.com/#!2/07a12/10

来自多个MySQL表的净额

1 个答案: