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POselect statement with where condition (select all or some)
 

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  1. POselect statement with where condition (select all or some)
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    <p>I have to following tables:</p> <p>images:</p> <pre><code>imageID userId Translated theImage -------------------------------------------- 1 2 1 image1 2 3 0 image2 3 3 0 image3 4 3 0 image4 5 3 1 image5 </code></pre> <p>and translationChains:</p> <pre><code>imageID sourceLang targetLang ------------------------------------ 1 2 3 2 4 1 3 5 1 4 4 2 5 1 4 </code></pre> <p>now I have two options: I want either to choose all the images the wasn't translated for a specific user in any language or to choose all the images for this user that wasn't translated in a specific language.</p> <p>I have the following query for the first option:</p> <pre><code>"Select images.imageid, images.theimage, images.translationRating From images where images.userID=? And images.translated =0" </code></pre> <p>and for the second option I have:</p> <pre><code>"Select images.imageid, images.theimage, images.translationRating From images, translationchains where images.userID=? And images.translated =0 and translationchains.imageId = images.imageid and translationchains.targetLang = ? " </code></pre> <p>for example if i'll use the first query with user 3 I want the result to be:</p> <pre><code>2 3 0 image2 3 3 0 image3 4 3 0 image4 </code></pre> <p>and for the second query with user 3 and targerLang = 1 I want the result to be:</p> <pre><code> 2 3 0 image2 3 3 0 image3 </code></pre> <p>I want to combine this two queries into one query that will work in all cases (according to the parameters that i'll send)</p> <p>how can I do it?</p> <p>I was trying to send as the second parameter (translationchains.targetLang = ?) the string " " (empty string) so it will ignore this condition but it didn't work</p>
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    1. USShai Zarzewski
    1. USShai Zarzewski
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    1. COwhat is your desired output?
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      1. POselect statement with where condition (select all or some)
      1. USJohn Woo
    2. COrows from the 'images' table, in the first option I don't care about the image Lang (lang=all) in the second option I want all the rows where in the 'translationChains' table the targetLang is X
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      1. POselect statement with where condition (select all or some)
      1. USShai Zarzewski
 

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