嗨有没有一种方法可以根据与SELECT语句的其余部分不同的条件来执行SUM(total_points),所以我希望SUM(total_points)为每行都是< =到$ chosenntrack?但SELECT语句的其余条件成为它们下面的内容。我需要他们都被一起归还..因为我正在填充一个联赛桌。SUM()基于不同条件的SELECT
非常感谢您的帮助。
SELECT
members.member_id,
members.teamname,
SUM(total_points) as total_points,
total_points as last_race_points
FROM
members,
members_leagues,
member_results
WHERE
members.member_id = members_leagues.member_id
AND members_leagues.league_id = '$chosenleague'
AND member_results.track_id = '$chosentrack'
AND members_leagues.start_race = '$chosentrack'
AND member_results.member_id = members_leagues.member_id
GROUP BY
members.member_id
ORDER BY
member_results.total_points DESC,
last_race_points DESC,
members.teamname DESC
[SQL sum with condition]的可能重复(http://stackoverflow.com/questions/4517681/sql-sum-with-condition) – Athafoud
@Athafoud你真的在挖掘东西了。令人印象深刻。 – Drew