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POMysql GROUP BY in LEFT JOIN and ORDER BY
 

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    <p>I have this query which works fine </p> <pre><code> $query = "SELECT beva_post.*, CONVERT_TZ(beva_post.date_published, '-00:00', '+00:00') as moment, beva_rubrique.titre_en, beva_user.image_user FROM beva_post LEFT JOIN beva_user ON beva_user.id_user = beva_post.id_user LEFT JOIN beva_rubrique ON beva_rubrique.id_rubrique = beva_post.id_rubrique LEFT JOIN beva_post_like ON beva_post_like.id_post = beva_post.id_post WHERE beva_post.id_user != '' AND beva_post.flag = 'true' "; $query .= "ORDER BY beva_post.id_post DESC "; $query .= "LIMIT 50"; </code></pre> <p>But I would like to ORDER this query not by id_post DESC but by id_post that have the most like by id_user (DESC) in the table beva_post_like</p> <p>The beva_post_like table looks like this :</p> <pre><code> +-------------+--------------+ | id_post | id_user | +-------------+--------------+ | 1 | 20 | | 1 | 11 | | 1 | 10 | | 2 | 20 | | 2 | 50 | | 1 | 15 | +-------------+--------------+ </code></pre> <p>I tried with GROUP BY in the LEFT JOIN beva_post_like but it does not work !</p> <p>Do I have to use more queries ?</p> <p>Thanks for your help...</p> <p>Chris</p> <p>After your answer I did this but I still have some posts with 'like' at the end</p> <pre><code> $query = "SELECT beva_post.*, COUNT(beva_post.id_post) as cpt, CONVERT_TZ(beva_post.date_published, '-00:00', '+00:00') as moment, beva_rubrique.titre_en, beva_user.image_user FROM beva_post LEFT JOIN beva_user ON beva_user.id_user = beva_post.id_user LEFT JOIN beva_rubrique ON beva_rubrique.id_rubrique = beva_post.id_rubrique LEFT JOIN beva_post_like ON beva_post_like.id_post = beva_post.id_post WHERE beva_post.id_user != '' AND beva_post.flag = 'true' "; $query .= "GROUP BY beva_post.id_post "; $query .= "ORDER BY cpt DESC "; $query .= "LIMIT 50"; </code></pre>
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