Question

我正在制作一个小型足球预测网站，我需要的一项功能是从我的数据库中生成包含过去结果的联赛表。我的数据库有5列;

Fixture_ID。

HOME_TEAM。

AWAY_TEAM。

Htgoals（主队进球数）。

Atgoals（客队取得的进球数）。

我有两个问题只能在主场比赛和远离主场比赛时返回球队的排名表

Home-" Select results.Home_team, 
SUM(if(results.Htgoals > results.Atgoals,3,0)) AS W,
SUM(IF(results.Htgoals = results.Atgoals,1,0)) AS D,
SUM(IF(results.Htgoals < results.Atgoals,1,0)) AS L
from results
GROUP BY results.Home_team
order by W desc";

Away table-" Select results.Away_team,
SUM(if(results.Atgoals > results.Htgoals,3,0)) AS W,
SUM(IF(results.Atgoals = results.Htgoals,1,0)) AS D,
SUM(IF(results.Atgoals < results.Htgoals,1,0)) AS L
FROM results
GROUP BY results.Away_team
ORDER BY W DESC";

我怎么能;

1.建立联盟以产生整体排名表

2.按分数而不是获胜次数对队伍进行评分

Answer 1

您的解决方案离我将使用的查询不远。我会在子查询中将没有group by子句的2个查询组合在一起，并通过外部查询中的求和，损失，绘制和点来进行组合：

select team, sum(W) as W, sum(D) as D, sum(L) as L, sum(W * 3 + D) as Points
FROM
((Select results.Home_team as team, 
if(results.Htgoals > results.Atgoals,1,0) AS W,
IF(results.Htgoals = results.Atgoals,1,0) AS D,
IF(results.Htgoals < results.Atgoals,1,0) AS L
from results)
UNION
(Select results.Away_team,
if(results.Atgoals > results.Htgoals,3,0) AS W,
IF(results.Atgoals = results.Htgoals,1,0) AS D,
IF(results.Atgoals < results.Htgoals,1,0) AS L
FROM results)) t
GROUP BY team
ORDER BY Points desc

在计算积分时，我假设3为胜利，1为抽奖。

生成整体排名表

1 个答案: