Sql查询电子商务解决方案的转换公式

Question

我需要一次性计算转换率，我可以获得计算的总计数值，以便用户在网站上取得全部成功：

SELECT COUNT(*) AS TotalSuccess FROM Orders Where Success like 'OK'

用户的全部内容可以找到：

SELECT COUNT(*) AS TotalTrialMade FROM productTrials

我如何能够成功地完成对话率，一次性使用sql，任何想法或帮助都将受到赞赏 感谢

Answer 1

SELECT TotalSuccess/TotalTrialMade AS ConversionRate FROM
(SELECT COUNT(*) AS TotalSuccess FROM Orders Where Success like 'OK') AS SuccessCount,
(SELECT COUNT(*) AS TotalTrialMade FROM productTrials) AS TrialCount