将 2 table 加入 php

Question

我正在尝试使用 SUM 从 MYSQL 加入 PHP 中的 2 table。但是当我得到结果时，它显示乘法结果。我不知道我的脚本有什么问题。请帮忙。我的脚本如下所示 table:

  table1: sale
  id    party    amount
  1     Topu     1000
  2     Rashed   2000
  3     Topu     5000 
  4     Topu     7000
  5     Rashed   5000

  table2: party_ledger

  id    party    payment_amount
  1     Topu          2000
  2     Rashed        7000
  3     Topu          4000 
  4     Topu          5000
  5     Rashed        4000

  <?php
  $sql= "SELECT sale.party, party_ledger.party, SUM(sale.amount) AS amount,
  SUM(party_ledger.payment_amount) AS pamount FROM sale
  INNER JOIN party_ledger ON sale.party=party_ledger.party
  GROUP BY sale.party,party_ledger.party";

  $result = $cn->query($sql);

  while($row = $result->fetch_assoc()) { ?>

  <tr style="font-size: 10px">

  <td><?php echo $row['amount']; ?></td>

  <td><?php echo $row['pamount']; ?></td>

  </tr>

  <?php   }
  $cn->close(); ?>

不幸的是我得到了错误的结果。请帮忙。

Answer 1

我不确定它是否会起作用...但我想它会给您一个想法..您需要先在第一个 table 上查询您想要的结果并执行相同的操作之后的第二个你可以加入他们两个。

SELECT SUM(tbl_sale.total_amt) as sale_total, SUM(tbl_pt_ledger.ledger_total_amt) as ledger_total FROM (SELECT party, SUM(amount) as total_amt FROM sale GROUP BY party) tbl_sale INNER JOIN (SELECT party, SUM(payment_amount) as ledger_total_amt FROM party_ledger GROUP BY party) tbl_pt_ledger ON tbl_sale.party = tbl_pt_ledger.party

Answer 2

$sql= "SELECT sale.party, party_ledger.party, SUM(sale.amount) AS amount,
      SUM(party_ledger.payment_amount) AS pamount FROM (select party,sum(amount) as amount from sale group by party) sale
      INNER JOIN (select party,sum(payment_amount) as payment_amount from party_ledger group by party) party_ledger ON sale.party=party_ledger.party GROUP BY sale.party,party_ledger.party";

你可以试试上面的查询

将 2 table 加入 php

joining 2 table with sum in php

php

mysqli