Manny Posted February 13, 2010 Share Posted February 13, 2010 I have made a query which creates a league table based upon points specified in another table. Below is just a snippet with 3 members, but the actual source code has more than 50 members. Is there any way to cut down this code or am I doing it as I'm supposed to? Also, is there a maximum number of union statements you can make in the query? (SELECT `ID_MEMBER`, `memberName`, SUM(`Perfect`) AS `Perfect`, SUM(`Outcome`) AS `Outcome`, SUM(`Goalscorer`) AS `Goalscorer`, (((SUM(`Perfect`) * 3) + SUM(`Outcome`)) + (SUM(`Goalscorer`) * 5)) AS `Points` FROM `prediction_league_predictions` WHERE `memberName` = 'Member1')UNION(SELECT `ID_MEMBER`, `memberName`, SUM(`Perfect`) AS `Perfect`, SUM(`Outcome`) AS `Outcome`, SUM(`Goalscorer`) AS `Goalscorer`, (((SUM(`Perfect`) * 3) + SUM(`Outcome`)) + (SUM(`Goalscorer`) * 5)) AS `Points` FROM `prediction_league_predictions` WHERE `memberName` = 'Member2')UNION(SELECT `ID_MEMBER`, `memberName`, SUM(`Perfect`) AS `Perfect`, SUM(`Outcome`) AS `Outcome`, SUM(`Goalscorer`) AS `Goalscorer`, (((SUM(`Perfect`) * 3) + SUM(`Outcome`)) + (SUM(`Goalscorer`) * 5)) AS `Points` FROM `prediction_league_predictions` WHERE `memberName` = 'Member3')ORDER BY `Points` DESC, `Perfect` DESC, `Outcome` DESC, `Goalscorer` DESC, `memberName` ASC Link to comment Share on other sites More sharing options...
justsomeguy Posted February 16, 2010 Share Posted February 16, 2010 That's what GROUP BY is for, you can group all of those fields by member name. is there a maximum number of union statements you can make in the query?That's generally not a great question to ask, if you're worried about hitting the limit of unions you're probably doing things the wrong way. I doubt there's a limit on the number of unions, but there's probably a limit as to how large a query can be (in fact, I know there is, because I've hit it). Link to comment Share on other sites More sharing options...
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