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MySQL SUM多列

更新时间:2023-01-29 16:41:41

SELECT Team,
       SUM(Score) AS Score,
       SUM(Won)   AS Won,
       SUM(Lost)  AS Lost
FROM   (SELECT IdTeamHome     AS Team,
               SUM(ScoreHome) AS Score,
               SUM(CASE
                     WHEN ScoreHome > ScoreAway THEN 1
                     ELSE 0
                   END)       AS Won,
        SUM(CASE
              WHEN ScoreHome < ScoreAway THEN 1
              ELSE 0
            END)       AS Lost
        FROM   matches
        WHERE  Status = 'Played'
        GROUP  BY IdTeamHome
        UNION ALL
        SELECT IdTeamAway     AS Team,
               SUM(ScoreAway) AS Score,
               SUM(CASE
                     WHEN ScoreHome < ScoreAway THEN 1
                     ELSE 0
                   END)       AS Won,
        SUM(CASE
              WHEN ScoreHome > ScoreAway THEN 1
              ELSE 0
            END)       AS Lost
        FROM   matches
        WHERE  Status = 'Played'
        GROUP  BY IdTeamAway) D
GROUP  BY Team