Question

我有一个麻烦的SQL查询，我正在尝试使用 Entrinsik的线人。我希望Informer对我进行计算结果使用javascript制作一个百分比。然而，线人缺乏能够访问列中的数据（即我的总数）所以我需要我的SQL查询来为我生成这个。结果目前看起来像这样：

refund_code    refund_amount    month_group
-----------    -------------    -----------
ref1               10           january
ref2               20           january
ref3               30           january
ref1               40           february
ref2               50           february
ref3               60           february

我想要的是这样的：

refund_code    refund_amount    month_group    month_total  
-----------    -------------    -----------    -----------  
ref1               10           january                 60  
ref2               20           january                 60  
ref3               30           january                 60  
ref1               40           february               150  
ref2               50           february               150  
ref3               60           february               150

我的查询如下：

SELECT mr.month_group,
    bd.transaction_code AS refund_code,
    SUM(bd.extended) AS refund_amount
FROM   billing_details AS bd
    LEFT JOIN monthly_ranges AS mr
        ON ( bd.entry_date BETWEEN mr.start_date AND mr.end_date )
WHERE  bd.transaction_code IN ( 'REFPRI', 'REFSEC', 'REFPT', 'REFREQPRI' )
    AND bd.entry_date >= '2012-01-05'
GROUP BY mr.month_group, bd.transaction_code
ORDER BY mr.month_group, bd.transaction_code

第二个用于生成每月总计表的查询如下所示：

SELECT mr.month_group,
    SUM(bd.extended) AS refund_amount
FROM   billing_details AS bd
    LEFT JOIN monthly_ranges AS mr
        ON ( bd.entry_date BETWEEN mr.start_date AND mr.end_date )
WHERE  bd.transaction_code IN ( 'REFPRI', 'REFSEC', 'REFPT', 'REFREQPRI' )
    AND bd.entry_date >= '2012-01-05'
GROUP BY mr.month_group
ORDER BY mr.month_group

那么有没有办法将两者合并？

Answer 1

从技术上讲，你可以将两者作为子查询加入。

即

SELECT m.refund_code, m.refund_amount, m.month_group, t.month_total
 FROM (your refund query above) m
 JOIN (your total query above) t
   ON m.month_group = t.month_group

只需确保将“总查询”中的“refund_amount”重命名为“month_total”或类似内容。

使用MySQL / Javascript计算百分比

1 个答案: