CCalendarEvent::CleanEventsWithDeadParents

static function CleanEventsWithDeadParents()
{
	global $DB;
	$strSql = "SELECT PARENT_ID from b_calendar_event where PARENT_ID in (SELECT ID from b_calendar_event where MEETING_STATUS='H' and DELETED='Y') AND DELETED='N'";
	$res = $DB->Query($strSql, false, "FILE: ".__FILE__."
 LINE: ".__LINE__);

	$strItems = "0";
	while($result = $res->Fetch())
	{
		$strItems .= ",". (int)$result['ID'];
	}

	if ($strItems != "0")
	{
		$strSql =
			"UPDATE b_calendar_event SET ".
			$DB->PrepareUpdate("b_calendar_event", array("DELETED" => "Y")).
			" WHERE PARENT_ID in (".$strItems.")";
		$DB->Query($strSql, false, "File: ".__FILE__."
Line: ".__LINE__);
	}
	CCalendar::ClearCache(['section_list', 'event_list']);
}