Question

我得到了这个视图（这是示例数据）：

HomeTeam          HomeTeamScore        AwayTeamScore       AwayTeam
---------------------------------------------------------------
Middlesbrough         3                       1            Manchester United
Manchester City       1                       1            Liverpool
Liverpool             2                       0            Middlesbrough
Manchester United     3                       2            Manchester City

我计算主队以这种方式得分的数量（类似于我计算客场球队得分的数量）：

SELECT HomeTeam, SUM (HomeTeamScore) AS CountGoals
FROM vW_Match   
GROUP BY HomeTeam ORDER BY CountGoals DESC

我如何计算球队积分？如果结果吸引两支球队获得1分，如果第一支球队获得更多进球然后离开球队，则获得3分，如果客队得分更多，则得到3分？

Answer 1

你可以尝试一下

  ;WITH temps AS
  (SELECT HomeTeam AS Team, 
          case when HomeTeamScore = AwayTeamScore then 1 
               when HomeTeamScore > AwayTeamScore then 3
                 ELSE 0
          end AS Point
   FROM vW_Match   
   UNION ALL 
   SELECT AwayTeam AS Team, 
          case when HomeTeamScore = AwayTeamScore then 1 
               when AwayTeamScore  > HomeTeamScore  then 3
               ELSE 0
          end AS Point
   FROM vW_Match  
   )
  select  t.Team, sum(t.Point) as TotalPoint
  from temps t
  group by t.Team

Answer 2

试试这个：

SELECT team, sum(points) from (
    select   HomeTeam as team, 
    case 
    when HomeTeamScore > AwayTeamScore then 3
    when HomeTeamScore = AwayTeamScore then 1
    ELSE 0
    end as points
    FROM vW_Match   

    UNION ALL 

    select AwayTeam as team, 
    case 
    when HomeTeamScore > AwayTeamScore then 0
    when HomeTeamScore = AwayTeamScore then 1
    ELSE 3
    end as points 
    FROM vW_Match   
) t
GROUP BY team

Answer 3

使用CASE语句比较每个团队的结果，您可以获得每场比赛的相应得分：

select HomeTeam, 
       HomeTeamScore,
       case when HomeTeamScore = AwayTeamScore then 1 
        when HomeTeamScore > AwayTeamScore then 3
        when HomeTeamScore < AwayTeamScore then 0
        end as HomeTeamPoints,
       AwayTeam,
       AwayTeamScore,
       case when AwayTeamScore = HomeTeamScore then 1 
        when AwayTeamScore > HomeTeamScore then 3
        when AwayTeamScore < HomeTeamScore then 0
        end as AwayTeamPoints
from vW_Match

这将为不同列中的两个团队提供结果。

从View中计算点数

3 个答案: