$vfeed_query_part = "ttrss_feeds.title AS feed_title,";
} else if ($feed == -4) { // all articles virtual feed
$vfeed_query_part = "ttrss_feeds.title AS feed_title,";
} else if ($feed == -4) { // all articles virtual feed
$query_strategy_part = "true";
$vfeed_query_part = "ttrss_feeds.title AS feed_title,";
} else if ($feed <= LABEL_BASE_INDEX) { // labels
$query_strategy_part = "true";
$vfeed_query_part = "ttrss_feeds.title AS feed_title,";
} else if ($feed <= LABEL_BASE_INDEX) { // labels