总结表中的列不会产生正确的结果

Question

SELECT 
SUM(p.mc_gross) AS totalsales, 
SUM(p.tax) AS totlatax, 
(SELECT SUM(totalamount) FROM table1 
    WHERE DATE_FORMAT(paydate, '%d-%m-%Y') = 
    DATE_FORMAT(p.payment_date, '%d-%m-%Y')) AS totalagentsales, 
DATE_FORMAT(p.payment_date, '%d-%m-%Y') AS filter, 
(p.mc_gross - p.tax - (SELECT SUM(totalamount) FROM table1)) AS TotalRevenue, 
(p.tax + (SELECT SUM(totalamount) FROM table1)) AS TotalPayment 
FROM table2 AS p GROUP BY filter LIMIT 0, 30 

此查询总和不会产生正确的结果。我做了TotalRevenue的减法和TotalPayment的加法。这个结果是不正确的。

这是我的输出：

totalsales totlatax totalagentsales filter  TotalRevenue TotalPayment 
38.99  3.54  NULL    11-03-2011 33.152   4.54 
6   0.09  NULL    14-02-2011 3.612   1.09 
2177.46  197.96  0.899    14-03-2011 1977.202  198.96 
299.94  27.27  1.399    15-03-2011 270.372  28.27 
19.98  1.82  NULL    21-01-2011 15.862   2.82 
3   0.27  NULL    22-01-2011 0.432   1.27 
14.77  1.82  NULL    28-02-2011 10.652   2.82 

Answer 1

不知道你的表的布局，在表中的数据，也没有你期待与你有什么，我只是猜测这里是什么东西。首先，您可能需要重复使用SUM作为您访问mc_gross和tax的其他实例。另外，我认为你使用子查询会让你感到困惑，特别是SELECT SUM(totalamount) FROM table1的两个实例。我想你想限制计算这些总和时使用的行，与你如何处理totalagentsales相似。您可以重复使用totalagentsales值，如果你将它插入FROM条款如下：

SELECT SUM(p.mc_gross) AS totalsales, SUM(p.tax) AS totlatax, 
     q.totalagentsales, DATE_FORMAT(p.payment_date, '%d-%m-%Y') AS filter, 
     (SUM(p.mc_gross) - SUM(p.tax) - q.totalagentsales) AS TotalRevenue, 
     (SUM(p.tax) + q.totalagentsales) AS TotalPayment 
FROM table2 AS p, 
    (SELECT SUM(totalamount) totalagentsales FROM table1 
     WHERE DATE_FORMAT(paydate, '%d-%m-%Y') = DATE_FORMAT(p.payment_date, '%d-%m-%Y') 
    ) AS q 
GROUP BY filter 
LIMIT 0, 30 

编辑

SELECT SUM(p.mc_gross) AS totalsales, SUM(p.tax) AS totlatax, 
     q.totalagentsales, DATE_FORMAT(p.payment_date, '%d-%m-%Y') AS filter, 
     (SUM(p.mc_gross) - SUM(p.tax) - q.totalagentsales) AS TotalRevenue, 
     (SUM(p.tax) + q.totalagentsales) AS TotalPayment 
FROM table2 AS p 
    LEFT JOIN (SELECT SUM(totalamount) totalagentsales, 
         DATE_FORMAT(paydate, '%d-%m-%Y') AS filter 
       FROM table1 GROUP BY filter) AS q 
       ON DATE_FORMAT(p.payment_date, '%d-%m-%Y') = q.filter 
GROUP BY filter 
LIMIT 0, 30