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<title>[12141] trunk/wp-includes/post.php:
  Fix comment and postmeta delete queries when deleting a post.</title>
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<div id="msg">
<dl>
<dt>Revision</dt> <dd><a href="http://trac.wordpress.org/changeset/12141">12141</a></dd>
<dt>Author</dt> <dd>ryan</dd>
<dt>Date</dt> <dd>2009-11-04 17:39:53 +0000 (Wed, 04 Nov 2009)</dd>
</dl>

<h3>Log Message</h3>
<pre>Fix comment and postmeta delete queries when deleting a post. see <a href="http://trac.wordpress.org/ticket/11073">#11073</a></pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkwpincludespostphp">trunk/wp-includes/post.php</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkwpincludespostphp"></a>
<div class="modfile"><h4>Modified: trunk/wp-includes/post.php (12140 => 12141)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/wp-includes/post.php        2009-11-04 15:52:23 UTC (rev 12140)
+++ trunk/wp-includes/post.php        2009-11-04 17:39:53 UTC (rev 12141)
</span><span class="lines">@@ -1202,15 +1202,21 @@
</span><span class="cx">         // Point all attachments to this post up one level
</span><span class="cx">         $wpdb-&gt;update( $wpdb-&gt;posts, $parent_data, $parent_where + array( 'post_type' =&gt; 'attachment' ) );
</span><span class="cx"> 
</span><del>-        $commentids = $wpdb-&gt;get_col( $wpdb-&gt;prepare( &quot;SELECT comment_ID FROM $wpdb-&gt;comments WHERE comment_post_ID = %d&quot;, $postid ));
-        do_action( 'delete_comment', $commentids );
-        $wpdb-&gt;query( $wpdb-&gt;prepare( &quot;DELETE FROM $wpdb-&gt;comments WHERE comment_ID IN(%s)&quot;, implode( ',', $commentids ) ));
-        do_action( 'deleted_comment', $commentids );
</del><ins>+        $comment_ids = $wpdb-&gt;get_col( $wpdb-&gt;prepare( &quot;SELECT comment_ID FROM $wpdb-&gt;comments WHERE comment_post_ID = %d&quot;, $postid ));
+        if ( ! empty($comment_ids) ) {
+                do_action( 'delete_comment', $comment_ids );
+                $in_comment_ids = &quot;'&quot; . implode(&quot;', '&quot;, $comment_ids) . &quot;'&quot;;
+                $wpdb-&gt;query( &quot;DELETE FROM $wpdb-&gt;comments WHERE comment_ID IN($in_comment_ids)&quot; );
+                do_action( 'deleted_comment', $comment_ids );
+        }
</ins><span class="cx"> 
</span><del>-        $postmetaids = $wpdb-&gt;get_col( $wpdb-&gt;prepare( &quot;SELECT meta_id FROM $wpdb-&gt;postmeta WHERE post_id = %d &quot;, $post_id ));
-        do_action( 'delete_postmeta', $postmetaids );
-        $wpdb-&gt;query( $wpdb-&gt;prepare( &quot;DELETE FROM $wpdb-&gt;postmeta WHERE meta_id IN(%s)&quot;, implode( ',', $postmetaids ) ));
-        do_action( 'deleted_postmeta', $postmetaids );
</del><ins>+        $post_meta_ids = $wpdb-&gt;get_col( $wpdb-&gt;prepare( &quot;SELECT meta_id FROM $wpdb-&gt;postmeta WHERE post_id = %d &quot;, $postid ));
+        if ( !empty($post_meta_ids) ) {
+                do_action( 'delete_postmeta', $post_meta_ids );
+                $in_post_meta_ids = &quot;'&quot; . implode(&quot;', '&quot;, $post_meta_ids) . &quot;'&quot;;
+                $wpdb-&gt;query( &quot;DELETE FROM $wpdb-&gt;postmeta WHERE meta_id IN($in_post_meta_ids)&quot; );
+                do_action( 'deleted_postmeta', $post_meta_ids );
+        }
</ins><span class="cx"> 
</span><span class="cx">         do_action( 'delete_post', $post_id );
</span><span class="cx">         $wpdb-&gt;query( $wpdb-&gt;prepare( &quot;DELETE FROM $wpdb-&gt;posts WHERE ID = %d&quot;, $postid ));
</span><span class="lines">@@ -2729,15 +2735,21 @@
</span><span class="cx"> 
</span><span class="cx">         $wpdb-&gt;query( $wpdb-&gt;prepare( &quot;DELETE FROM $wpdb-&gt;postmeta WHERE meta_key = '_thumbnail_id' AND meta_value = %d&quot;, $post_id ));
</span><span class="cx"> 
</span><del>-        $commentids = $wpdb-&gt;get_col( $wpdb-&gt;prepare( &quot;SELECT comment_ID FROM $wpdb-&gt;comments WHERE comment_post_ID = %d&quot;, $post_id ));
-        do_action( 'delete_comment', $commentids );
-        $wpdb-&gt;query( $wpdb-&gt;prepare( &quot;DELETE FROM $wpdb-&gt;comments WHERE comment_ID IN(%s)&quot;, implode( ',', $commentids ) ));
-        do_action( 'deleted_comment', $commentids );
</del><ins>+        $comment_ids = $wpdb-&gt;get_col( $wpdb-&gt;prepare( &quot;SELECT comment_ID FROM $wpdb-&gt;comments WHERE comment_post_ID = %d&quot;, $post_id ));
+        if ( ! empty($comment_ids) ) {
+                do_action( 'delete_comment', $comment_ids );
+                $in_comment_ids = &quot;'&quot; . implode(&quot;', '&quot;, $comment_ids) . &quot;'&quot;;
+                $wpdb-&gt;query( &quot;DELETE FROM $wpdb-&gt;comments WHERE comment_ID IN($in_comment_ids)&quot; );
+                do_action( 'deleted_comment', $comment_ids );
+        }
</ins><span class="cx"> 
</span><del>-        $postmetaids = $wpdb-&gt;get_col( $wpdb-&gt;prepare( &quot;SELECT meta_id FROM $wpdb-&gt;postmeta WHERE post_id = %d &quot;, $post_id ));
-        do_action( 'delete_postmeta', $postmetaids );
-        $wpdb-&gt;query( $wpdb-&gt;prepare( &quot;DELETE FROM $wpdb-&gt;postmeta WHERE meta_id IN(%s)&quot;, implode( ',', $postmetaids ) ));
-        do_action( 'deleted_postmeta', $postmetaids );
</del><ins>+        $post_meta_ids = $wpdb-&gt;get_col( $wpdb-&gt;prepare( &quot;SELECT meta_id FROM $wpdb-&gt;postmeta WHERE post_id = %d &quot;, $post_id ));
+        if ( !empty($post_meta_ids) ) {
+                do_action( 'delete_postmeta', $post_meta_ids );
+                $in_post_meta_ids = &quot;'&quot; . implode(&quot;', '&quot;, $post_meta_ids) . &quot;'&quot;;
+                $wpdb-&gt;query( &quot;DELETE FROM $wpdb-&gt;postmeta WHERE meta_id IN($in_post_meta_ids)&quot; );
+                do_action( 'deleted_postmeta', $post_meta_ids );
+        }
</ins><span class="cx"> 
</span><span class="cx">         do_action( 'delete_post', $post_id );
</span><span class="cx">         $wpdb-&gt;query( $wpdb-&gt;prepare( &quot;DELETE FROM $wpdb-&gt;posts WHERE ID = %d&quot;, $post_id ));
</span></span></pre>
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