如何对同一查询中的返回结果求和？

Question

如何在同一查询中在新列中求和结果（目标+交付）？

SELECT Sum(CASE 
             WHEN the_status = 'goal' THEN 1 
             ELSE 0 
           END) AS goal, 
       Sum(CASE 
             WHEN the_status = 'delivered' THEN 1 
             ELSE 0 
           END) AS delivered
FROM   the_data
where ....

Answer 1

您可以同时添加第三列并同时满足以下两个条件：

SELECT Sum(CASE 
             WHEN the_status = 'goal' THEN 1 
             ELSE 0 
           END) AS goal, 
       Sum(CASE 
             WHEN the_status = 'delivered' THEN 1 
             ELSE 0 
           END) AS delivered,
       Sum(CASE 
             WHEN the_status IN ('goal', 'delivered') THEN 1 
             ELSE 0 
           END) AS goal_and_delivered
FROM   the_data