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POMySQL how to order based on user inputs with joined tables?
 

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  1. POMySQL how to order based on user inputs with joined tables?
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    <p>This is an "example version" of my current SQL query:</p> <pre class="lang-sql prettyprint-override"><code>SELECT DISTINCT files.* FROM vw_files files LEFT JOIN tbl_file_ext fext ON files.id = fext.fileID INNER JOIN tbl_extensions ext ON fext.extensionID = ext.id WHERE ext.extension = 'exe' OR ext.extension = 'com' </code></pre> <p>The <code>WHERE</code> clause is driven by a user entering a comma delimited string.</p> <p>What I'd like is to order/group by the input so say if a user enters:</p> <p><code>com, exe, jpg</code> the WHERE clause will be:</p> <pre class="lang-sql prettyprint-override"><code>WHERE ext.extension = 'com' OR ext.extension = 'exe' OR ext.extension = 'jpg' </code></pre> <p>The results need to be ordered by priority of the inputs something like:</p> <pre class="lang-none prettyprint-override"><code>File1 com exe jpg File2 com exe jpg File3 com exe File4 com jpg File5 com </code></pre> <p>The <code>WHERE</code> clause is constructed via PHP, but how can I construct a <code>ORDER</code> or <code>GROUP</code> clause which will retuern results ordered by priority of the usrs inputs.</p> <p>Edit as requested ---- </p> <p>The above was just an example as I stated, and didn't feel appropriate as i'm doing something similar to stackoverflow. However, the real setup is as follows:</p> <p>tbl_solutions - id, authorID, ipAddress, title, question, dateAdded, locked, active</p> <p>tbl_solution_tags - id, FK solutionID, FK tagID</p> <p>tbl_solution_files - id, FK solutionID, FK fileID</p> <p>vw_solution_and_file - username, id (solution id), authorID, ipAddress, title, question, dateAdded, locked, active, fileName, fileSize, removed, public</p> <pre class="lang-sql prettyprint-override"><code>select sol.*, files.fileName, files.fileSize, files.removed, files.public from tbl_solutions sol left join tbl_files files on (select sf.fileID from tbl_solution_files sf where sf.solutionID = sol.id) = files.id; </code></pre> <p>vw_solution_file_tags - same as above but also returns tags</p> <pre class="lang-sql prettyprint-override"><code>SELECT sf.*,GROUP_CONCAT(tags.tag SEPARATOR ', ') as 'tags' FROM vw_solution_and_file sf LEFT JOIN tbl_solution_tags st ON sf.id = st.solutionID INNER JOIN tbl_tags tags ON st.tagID = tags.id GROUP BY sf.id </code></pre> <p>Example output from vw_solution_file_tags:</p> <p>username id authorID ipAddress title question dateAdded locked active fileName fileSize removed public tags </p> <p>craig 24 81 127.0.0.1 "A Title" "A question" 2012-01-01 0 1 NULL NULL NULL 1 c++, ASP, gdb </p> <p>craig 25 81 127.0.0.1 "B Title" "B question" 2012-01-01 0 1 NULL NULL NULL 1 c++, ASP, Windows</p> <p>So at the moment all I'm doing is using vw_solution_file_tags in my page, however the user is going to be able to apply a filter on the tags. So he may say ASP, Windows so both results above will show. But they need to be in order of precedence of the users input.</p> <p>So the code I want to use in my PHP Query will be similar to vw_solution_file_tags but only where the tags match user input and ordered by that input.</p>
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    1. USCraig Stewart
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    1. COIf you can construct the WHERE clause via PHP, why can't you construct the ORDER Or GROUP BY clauses?
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    2. COTry `ORDER BY ext.extension = 'com' DESC, ext.extension = 'exe' DESC, ext.extension = 'jpg' DESC`
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    3. COWon't that give all Com then exe then jpg though? I need "com exe jpg", "com exe", "com, jpg" "exe, jpg" then com - exe -jpg etc
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      1. USCraig Stewart
 

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