mysql 查看我的查询输出我需要不同的方式

Question

这是我的查询

Select Count(Case When campaign_pid != 0 Then 1 End) 
   As Email, Count(Case When sms_pid != 0 Then 1 End) 
   As Sms, Count(Case When survey_pid != 0 Then 1 End) 
   As Survey From tablename

请帮助我，这是我的查询输出

Email   Sms     Survey    
21      1       4

我需要这样的输出

 name    value  
 Email   21  
 Sms     1   
 Survey  4

请告诉我如何像上面的 optput 一样

Answer 1

像下面这样的东西应该可以工作

SELECT 'Email' AS Name, Count(Case When campaign_pid != 0 Then 1 End) As Value From tablename
 UNION SELECT 'SMS', Count(Case When sms_pid != 0 Then 1 End)s  From tablename
 UNION SELECT 'Survey', Count(Case When survey_pid != 0 Then 1 End) From tablename

或者更好

SELECT 'Email' AS Name, COUNT() AS Value FROM tablename WHERE campaign_pid <> 0
 UNION SELECT 'SMS', COUNT() FROM tablename WHERE sms_pid <> 0
 UNION SELECT 'Survey', COUNT() FROM tablename  WHERE survey_pid <> 0

不能 100% 确定您的附加问题，也许这就是您想要的

SELECT COUNT(DISTINCT some_unique_col)
  FROM table_name
 WHERE campaign_pid <> 0
   AND sms_pid <> 0
   AND survey_pid <> 0

也许您想要 SUM 而不是 COUNT，如果您可以提供一些示例数据和预期结果，这会有所帮助