_ck_

        if ( ! empty($groupby) )
            $groupby = 'GROUP BY ' . $groupby;
        if ( !empty( $orderby ) )
            $orderby = 'ORDER BY ' . $orderby;
        $found_rows = '';
        // if ( !empty($limits) )
        //  $found_rows = 'SQL_CALC_FOUND_ROWS';

        // $request = " SELECT $found_rows $distinct $fields FROM $wpdb->posts $join WHERE 1=1 $where $groupby $orderby $limits";
        $request = " SELECT $distinct $fields FROM $wpdb->posts $join WHERE 1=1 $where $groupby $orderby $limits";
        $this->request = apply_filters('posts_request', $request);

        $this->posts = $wpdb->get_results($this->request);
        // Raw results filter.  Prior to status checks.
        $this->posts = apply_filters('posts_results', $this->posts);

        if ( !empty($this->posts) && $this->is_comment_feed && $this->is_singular ) {
            $cjoin = apply_filters('comment_feed_join', '');
            $cwhere = apply_filters('comment_feed_where', "WHERE comment_post_ID = '{$this->posts[0]->ID}' AND comment_approved = '1'");
            $comments_request = "SELECT $wpdb->comments.* FROM $wpdb->comments $cjoin $cwhere ORDER BY comment_date_gmt DESC LIMIT " . get_option('posts_per_rss');
            $this->comments = $wpdb->get_results($comments_request);
            $this->comment_count = count($this->comments);
        }

        if ( !empty($limits) ) {
            // $found_posts_query = apply_filters( 'found_posts_query', 'SELECT FOUND_ROWS()' );
            $count="$distinct $fields"; $first=strpos($count,','); if ($first!==false) {$count=substr($count,0,$first-1);}
            $found_posts_query = " SELECT count($count) FROM $wpdb->posts $join WHERE 1=1 $where $groupby";
            $this->found_posts = $wpdb->get_var( $found_posts_query );
            $this->found_posts = apply_filters( 'found_posts', $this->found_posts );
            $this->max_num_pages = ceil($this->found_posts / $q['posts_per_page']);
        }