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我在页面上正确显示数据时遇到了困难。我正在运行一个帐单报告查询，该报告搜索所有未结帐单，我想将它们显示在一个页面上，未结余额按余额的年龄显示。因此，如果客户 ABC 在过去一年中有 10 张发票，其中一些有未结余额，我想在 0-30 / 30-60 / 60-90 / 和 90+ 天的列中显示这些余额。这是我所拥有的...

    $sql17 = "SELECT $mysql_billing.primary_key, $mysql_billing.a_name, $mysql_billing.invoicedate, $mysql_billing.finaltotal, $mysql_billing_dates.paidtotal,
 ($mysql_billing.finaltotal - $mysql_billing_dates.paidtotal) AS total
 FROM
   (SELECT $mysql_billing.primary_key, $mysql_billing.a_name, $mysql_billing.login_username, $mysql_billing.invoicedate,
   SUM($mysql_billing.custotal) AS finaltotal 
   FROM $mysql_billing where $today >= invoicedate AND $start_search_prev180_date <= invoicedate AND custotal != payments GROUP BY login_username) $mysql_billing 
 LEFT JOIN 
   (SELECT $mysql_billing_dates.id, $mysql_billing_dates.username, 
   SUM($mysql_billing_dates.amount) AS paidtotal 
   FROM $mysql_billing_dates where complete != 'yes' GROUP BY username) $mysql_billing_dates 
 ON ($mysql_billing.login_username = $mysql_billing_dates.username) 
 GROUP BY a_name ORDER BY a_name ASC";

这似乎打印出结果，但是如何根据超过 1 个日期变量将结果放入不同的列中？我必须做 4 个单独的查询吗？

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2 回答 2

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您的 SQL Fiddle 很接近，但您的一些连接不正确。

SELECT 
  billing.a_name, 
  billing.finaltotal, 
  billing_dates.paidtotal,
  (billing.finaltotal - billing_dates.paidtotal) AS total,
   billing.TimePeriod
FROM
   (SELECT 
      a_name, 
      login_username, 
      SUM(custotal) AS finaltotal,
      CASE 
        WHEN invoicedate > DATE_SUB(CURDATE(),INTERVAL 30 DAY) THEN '30'
        WHEN invoicedate > DATE_SUB(CURDATE(),INTERVAL 60 DAY) THEN '60'
        WHEN invoicedate > DATE_SUB(CURDATE(),INTERVAL 90 DAY) THEN '90'
        ELSE '90+'
      END AS TimePeriod

    FROM billing 
    where CURDATE() >= invoicedate 
      AND CAST(20120601 AS DATETIME) <= invoicedate 
    GROUP BY login_username) billing 
 LEFT JOIN 
   (SELECT 
      username, 
      SUM(amount) AS paidtotal 
    FROM billing_dates
    GROUP BY username) billing_dates 
   ON (billing.a_name = billing_dates.username) 
ORDER BY a_name ASC;

这是更新的Fiddle。

于 2013-01-16T02:13:59.437 回答
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我建议为客户选择所有未结清的发票，然后使用代码将它们组织到每个时间段的列表中。

为此使用单个查询可能会更快，并且很容易在程序中对结果进行分类。

然后，您只需为每个列表选择一个元素即可在报告中生成行。

于 2013-01-16T00:36:27.607 回答