选择时和总计

Question

我有表匹配和我需要总和的目标。如果Match.Home_team='Tupesy'我需要总和Match.Home_team='Tupesy'，否则sum的Match.Away_goals。

现在我有这个，但是是完全错误的：/

SELECT *, 
    CASE (Match.Home_team) 
     WHEN (Match.Home_team='Tupesy')THEN (SUM(Match.Home_goals)) 
     ELSE (SUM(Match.Away_goals)) 
     END 
FROM Match 
Where (Match.ID_match='1'); 

Answer 1

这可能是这样的（SUM和本案应以相反的顺序来写的）：

select Sum(case 
      when (Home_Team = 'Tupesy') then 
       Home_goals 
      else 
       Away_goals 
      end) 
    from Match 
where (ID_match = '1')