Question

Select AdClick.AdMonth AS DATE,
(SELECT SUM(AdBudget) FROM AdBudget GROUP BY AdMonth) / 
(SELECT SUM(AdClicks) FROM AdClick, AdReport 
WHERE AdReport.AdSourceID != 4
AND AdReport.AdSourceID = AdClick.AdSourceID
GROUP BY AdMonth) AS CPC
FROM AdClick, AdBudget, AdReport
WHERE AdClick.AdYear = '2016' 
GROUP BY AdClick.AdMonth

SUM(AdBudget)和SUM(AdClicks)在表格中附加了AdMonth值以分隔月份，但我需要划分具有相同月份值的SUM。分组不起作用，因为我不能将子查询中的多个值除以具有多个值的另一个子查询，所以有没有办法将AdMonth 1的总和除以AdMonth 1的总和和2总和2 ...？

仅供参考：我使用代码创建ColdFusion图表，但这些查询在ColdFusion文档中调用，因此使用图表的ColdFusion解决方案不在桌面之外。

Answer 1

应该是这样的。内部将表连接在月份和源ID上，并按月分组：

SELECT   AdClick.AdMonth  AS `DATE`
         , SUM(AdBudget.AdBudget)
         , SUM(AdClick.AdClicks)
         , SUM(AdBudget.AdBudget) / SUM(AdClick.AdClicks)
FROM    AdClick
           INNER JOIN AdBudget ON AdClick.AdMonth = AdBudget.AdMonth
           INNER JOIN  AdReport ON AdReport.AdSourceID = AdClick.AdSourceID
WHERE   AdClick.AdYear = '2016' 
AND     AdReport.AdSourceID != 4
GROUP BY AdClick.AdMonth

SQL - 将多个值除以多个值

1 个答案: