Fixing a bug in searching for a users posts when using PgSQL, reporte…

…d by delroth. #95

search.php

@@ -311,7 +311,7 @@
 			// If it's a search for posts by a specific user ID
 			else if ($action == 'show_user')
 			{
-				$result = $db->query('SELECT t.id FROM '.$db->prefix.'topics AS t INNER JOIN '.$db->prefix.'posts AS p ON t.id=p.topic_id LEFT JOIN '.$db->prefix.'forum_perms AS fp ON (fp.forum_id=t.forum_id AND fp.group_id='.$pun_user['g_id'].') WHERE (fp.read_forum IS NULL OR fp.read_forum=1) AND p.poster_id='.$user_id.' GROUP BY t.id ORDER BY t.last_post DESC') or error('Unable to fetch topic list', __FILE__, __LINE__, $db->error());
+				$result = $db->query('SELECT t.id FROM '.$db->prefix.'topics AS t INNER JOIN '.$db->prefix.'posts AS p ON t.id=p.topic_id LEFT JOIN '.$db->prefix.'forum_perms AS fp ON (fp.forum_id=t.forum_id AND fp.group_id='.$pun_user['g_id'].') WHERE (fp.read_forum IS NULL OR fp.read_forum=1) AND p.poster_id='.$user_id.' GROUP BY t.id'.($db_type == 'pgsql' ? ', t.last_post' : '').' ORDER BY t.last_post DESC') or error('Unable to fetch topic list', __FILE__, __LINE__, $db->error());
 				$num_hits = $db->num_rows($result);
 
 				if (!$num_hits)