fix & optimize catalog a little bit, don't expect anything big yet

templates/themes/catalog/theme.php

@@ -35,7 +35,12 @@
 			$recent_posts = array();
 			$stats = array();
 			
-                        $query = query(sprintf("SELECT *, `id` AS `thread_id`, (SELECT COUNT(*) FROM ``posts_%s`` WHERE `thread` = `thread_id`) AS `reply_count`, (SELECT COUNT(*) FROM ``posts_%s`` WHERE `thread` = `thread_id` AND `filehash` IS NOT NULL) AS `image_count`, (SELECT `time` FROM ``posts_%s`` WHERE `thread` = `thread_id` ORDER BY `time` DESC LIMIT 1) AS `last_reply`, (SELECT `name` FROM ``posts_%s`` WHERE `thread` = `thread_id` ORDER BY `time` DESC LIMIT 1) AS `last_reply_name`, (SELECT `subject` FROM ``posts_%s`` WHERE `thread` = `thread_id` ORDER BY `time` DESC LIMIT 1) AS `last_reply_subject`, '%s' AS `board` FROM ``posts_%s`` WHERE `thread`  IS NULL ORDER BY `bump` DESC", $board_name, $board_name, $board_name, $board_name, $board_name, $board_name, $board_name)) or error(db_error());
+                        $query = query(sprintf("SELECT *, `id` AS `thread_id`,
+				(SELECT COUNT(*) FROM ``posts_%s`` WHERE `thread` = `thread_id`) AS `reply_count`,
+				(SELECT SUM(`num_files`) FROM ``posts_%s`` WHERE `thread` = `thread_id` AND `num_files` IS NOT NULL) AS `image_count`,
+				(SELECT `time` FROM ``posts_%s`` WHERE `thread` = `thread_id` ORDER BY `time` DESC LIMIT 1) AS `last_reply`,
+				'%s' AS `board` FROM ``posts_%s`` WHERE `thread`  IS NULL ORDER BY `bump` DESC",
+			$board_name, $board_name, $board_name, $board_name, $board_name)) or error(db_error());
 			
 			while ($post = $query->fetch(PDO::FETCH_ASSOC)) {
 				$post['link'] = $config['root'] . $board['dir'] . $config['dir']['res'] . sprintf($config['file_page'], ($post['thread'] ? $post['thread'] : $post['id']));