UsageStatTable::deleteByFilter

static function deleteByFilter(array $filter)
{
	$entity = static::getEntity();
	$sqlTableName = static::getTableName();

	$where = MainEntityQuery::buildFilterSql($entity, $filter);
	if ($where <> '')
	{
		$sql = "DELETE FROM {$sqlTableName} WHERE ".$where;
		$entity->getConnection()->queryExecute($sql);
	}
}