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-   -   Optimizing MySQL Query Help (https://vborg.vbsupport.ru/showthread.php?t=263665)

Boofo 05-15-2011 06:32 AM
Optimizing MySQL Query Help
 
Can one of you MySQL gurus look at the following query and tell me if there is a way to optimize it a little better? It works fine, but I kind of jerry-rigged it along the way to get what I needed from it.

Code:
$topattach = $vbulletin->db->query_first("
        SELECT counter AS aviews, a.attachmentid, a.dateline, a.filename, a.contenttypeid,
        post.userid as userid, post.username as username, post.postid AS postid,
        thread.threadid AS threadid, thread.title AS threadtitle,
        user.usergroupid
        FROM " . TABLE_PREFIX . "attachment AS a
        LEFT JOIN " . TABLE_PREFIX . "post AS post ON (post.postid = a.contentid)
        LEFT JOIN " . TABLE_PREFIX . "thread AS thread ON (thread.threadid = post.threadid)
        LEFT JOIN " . TABLE_PREFIX . "user AS user ON (user.userid = post.userid)
        WHERE a.contenttypeid = $contenttypeid
                " . iif(!empty($exuserids), "AND user.userid NOT IN ($exuserids)") . "
                " . iif(!empty($exgroups), "AND user.usergroupid NOT IN ($exgroups)") . "
        ORDER BY aviews
        DESC LIMIT 1

Boofo 05-16-2011 03:38 PM
We don't have any query experts here?


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