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How to use the sum query for specific rows

开发者 https://www.devze.com 2023-04-10 10:20 出处:网络
I am having a bit of a problem with my MYSQL query, here I am returning all the results to populate a league table.

I am having a bit of a problem with my MYSQL query, here I am returning all the results to populate a league table.

The table looks like a bigger version of this

MEMBERS RESULTS TABLE
member_id      1   2   1   2
track_id       1   1   2   2
total_points  234 432 222 234

The SUM(total) is returning the SUM for all the total_points together no matter what the member_id is, when I need them to calcul开发者_JS百科ate just for where each member_id row is.

SELECT members.member_id, members.teamname, SUM(total_points)
FROM members, members_leagues, member_results
   WHERE members.member_id = members_leagues.member_id
     AND members_leagues.league_id = '45'
       AND member_results.track_id = '1'
          AND member_results.member_id = members_leagues.member_id
             AND members_leagues.start_race >= member_results.track_id 


You need a GROUP BY clause

SELECT members.member_id, members.teamname, SUM(total_points)
FROM members, members_leagues, member_results
   WHERE members.member_id = members_leagues.member_id
     AND members_leagues.league_id = '45'
       AND member_results.track_id = '1'
          AND member_results.member_id = members_leagues.member_id
             AND members_leagues.start_race >= member_results.track_id 
GROUP BY members.memberID


just add a group by

GROUP BY members.member_id
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