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POHow can I reduce the size of this Ranking Query in MySql?
 

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  1. POHow can I reduce the size of this Ranking Query in MySql?
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    <p>I've got a ranking query that ranks the performance of teams in challenges.</p> <p>The hierarchy of data is as follows: teams have members members have activities activities have activitytypes challenges have activitytypes</p> <p>If I want to rank the performance all teams in a single challenge, this query works great:</p> <pre><code>SELECT t.teamID, t.teamName, scoring.challengeID, outerchallenge.name AS ChallengeName, outerchallenge.description AS ChallengeDescription, outerchallenge.startDate, outerchallenge.endDate, scoring.standardValueSum, scoring.standardUnit, scoring.rank FROM challenge outerchallenge LEFT JOIN ( SELECT teamID, challengeID, standardValueSum, standardUnit, FIND_IN_SET(standardValueSum, scores ) AS rank FROM ( SELECT teammember.teamID, mc.challengeID, sum(v.standardValue) standardValueSum, v.standardUnit FROM v_activitystats v INNER JOIN memberchallenge mc ON v.memberID = mc.memberID AND v.standardValue &gt; 0 INNER JOIN teammember ON v.memberID = teammember.memberID INNER JOIN challenge c ON mc.challengeID = c.challengeID INNER JOIN challengeactivitytype cat ON c.challengeID = cat.challengeID AND cat.activityTypeID = v.activityTypeID WHERE v.activityDate BETWEEN c.startDate AND c.endDate AND c.challengeID = 33 GROUP BY standardUnit, challengeID, teamID ) vstats CROSS JOIN ( SELECT GROUP_CONCAT( DISTINCT standardValueSum ORDER BY standardValueSum DESC ) AS scores FROM ( SELECT teammember.teamID, mc.challengeID, sum(v.standardValue) standardValueSum FROM v_activitystats v INNER JOIN memberchallenge mc ON v.memberID = mc.memberID AND v.standardValue &gt; 0 INNER JOIN teammember ON v.memberID = teammember.memberID INNER JOIN challenge c ON mc.challengeID = c.challengeID INNER JOIN challengeactivitytype cat ON c.challengeID = cat.challengeID AND cat.activityTypeID = v.activityTypeID WHERE v.activityDate BETWEEN c.startDate AND c.endDate AND c.challengeID = 33 GROUP BY challengeID, teamID ) vstats ) scores ) scoring ON outerchallenge.challengeID = scoring.challengeID INNER JOIN team t ON scoring.teamID = t.teamID </code></pre> <h2>Here is a formatted query: <a href="http://mysql.pastebin.com/XggRL5kX" rel="nofollow noreferrer">http://mysql.pastebin.com/XggRL5kX</a></h2> <p>ChallengeID, Team, Ranking 99 Red Team 1 99 Blue Team 2</p> <p>Once again, this works just fine for a specific challenge, (ID = 33)</p> <p>I want to get a query with the same sort of rankings, but for multiple challenges, like those that have already ended.</p> <p>I tried this query:</p> <pre><code>SELECT rankings.teamID, stuff.teamName, rankings.challengeID, rankings.ChallengeName, rankings.ChallengeDescription, rankings.startDate, rankings.endDate, rankings.standardValueSum, rankings.standardUnit, rankings.rank FROM challenge chal LEFT JOIN ( SELECT t.teamID, t.teamName, scoring.challengeID, outerchallenge.name AS ChallengeName, outerchallenge.description AS ChallengeDescription, outerchallenge.startDate, outerchallenge.endDate, scoring.standardValueSum, scoring.standardUnit, scoring.rank FROM challenge outerchallenge LEFT JOIN ( SELECT teamID, challengeID, standardValueSum, standardUnit, FIND_IN_SET(standardValueSum, scores ) AS rank FROM ( SELECT teammember.teamID, mc.challengeID, sum(v.standardValue) standardValueSum, v.standardUnit FROM v_activitystats v INNER JOIN memberchallenge mc ON v.memberID = mc.memberID AND v.standardValue &gt; 0 INNER JOIN teammember ON v.memberID = teammember.memberID INNER JOIN challenge c ON mc.challengeID = c.challengeID INNER JOIN challengeactivitytype cat ON c.challengeID = cat.challengeID AND cat.activityTypeID = v.activityTypeID WHERE v.activityDate BETWEEN c.startDate AND c.endDate GROUP BY standardUnit, challengeID, teamID ) vstats CROSS JOIN ( SELECT GROUP_CONCAT( DISTINCT standardValueSum ORDER BY standardValueSum DESC ) AS scores FROM ( SELECT teammember.teamID, mc.challengeID, sum(v.standardValue) standardValueSum FROM v_activitystats v INNER JOIN memberchallenge mc ON v.memberID = mc.memberID AND v.standardValue &gt; 0 INNER JOIN teammember ON v.memberID = teammember.memberID INNER JOIN challenge c ON mc.challengeID = c.challengeID INNER JOIN challengeactivitytype cat ON c.challengeID = cat.challengeID AND cat.activityTypeID = v.activityTypeID WHERE v.activityDate BETWEEN c.startDate AND c.endDate GROUP BY challengeID, teamID ) vstats ) scores ) scoring ON outerchallenge.challengeID = scoring.challengeID INNER JOIN team t ON scoring.teamID = t.teamID ) rankings ON chal.challengeID = rankings.challengeID WHERE chal.endDate &lt;= current_date() </code></pre> <h2>Here is a formatted query: <a href="http://mysql.pastebin.com/mSZwtDm3" rel="nofollow noreferrer">http://mysql.pastebin.com/mSZwtDm3</a></h2> <p>But rather than every challenge having a 1st place, and a 2nd place, the rankings are across all of the challenges. Like this</p> <p>ChallengeID, Team, Ranking 99 Red Team 1 99 Blue Team 2 134 Red Team 3 134 Blue Team 4 443 Red Team 5 442 Blue Team 6</p> <p>So, I suppose, I'm evaluating the ranking at the wrong place, but I'm sort of out of ideas for how to make this work. How can I get results like this: ChallengeID, Team, Ranking 99 Red Team 1 99 Blue Team 2 134 Red Team 1 134 Blue Team 2 443 Red Team 1 443 Blue Team 2 </p>
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