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POCount the "ratio?" for wins and losses
 

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  1. POCount the "ratio?" for wins and losses
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    <p>I've already got this to work but it's a really bad approach and i need some help with factorization of my query.</p> <pre><code>SELECT `GameDate`, COUNT(CASE WHEN `P1Outcome`= 'win' AND P2Param = 'a' THEN 1 END) AS a_win, COUNT(CASE WHEN `P1Outcome`= 'loss' AND P2Param = 'a' THEN 1 END) AS a_loss, COUNT(CASE WHEN `P1Outcome`= 'win' AND P2Param = 'b' THEN 1 END) AS b_win, COUNT(CASE WHEN `P1Outcome`= 'loss' AND P2Param = 'b' THEN 1 END) AS b_loss FROM games WHERE `P2Param` IN ( 'a', 'b', 'c' ) GROUP BY GameDate </code></pre> <p>This will get me an query that i can use in my php application but i would like to skip having to make the actual ratio calculation in php and fetch it directly with SQL.</p> <p>So basically what i've been trying to do is something similar to this:</p> <pre><code> COUNT(CASE WHEN `P1Outcome`= 'win' AND P2Param = 'a' THEN 1 Else -1 END) AS a_ratio, </code></pre> <p>But just as the beginer i'm, i can't figure it out how i can make this to work. </p> <p><strong>EDIT:</strong> Sorry for not explaining my regards in more details, here is the thing. I'm creating an statistics component and i need to fetch the ratio for a period of time in order to display it as an graph. So the following things are required:</p> <p>GameDate (1,2,3,4... days ago) The ratio for the player based on to different params (maps in this case)</p> <p>So in short this is what i got at the moment:</p> <pre><code>GameDate a_win a_loss b_win b_loss 2011/04/25 x x x x 2011/04/23 x x x x .... </code></pre> <p>So everything works out great, but i would like to have the actual ratio calculation made in SQL because at the moment i need to make it in php e.g <code>$ratio = $q[a_win]-$q[a_loss]</code> and due to the fact that I've a lot of different param my query is like double the size because i need to fetch both the win and loss instead of just the ratio like i want in the first place.</p>
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    1. USAlexander
    1. USAlexander
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      1. VTUpMod
    1. COWhat is the question?
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      1. USzerkms
    2. COWhat is the actual ratio calculation you're trying to perform (currently in PHP)?
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      1. USeggyal
    3. COSorry for the lack of details and i've updated the question so it's easier to follow what the problem is.
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      1. USAlexander
 

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