protected function _getViewJoinAll($sTable)
    {
        $sJoin = ' ';
        $oMetaData = oxNew(\OxidEsales\Eshop\Core\DbMetaDataHandler::class);
        $aTables = $oMetaData->getAllMultiTables($sTable);
        if (count($aTables)) {
            foreach ($aTables as $sTableKey => $sTableName) {
                $sJoin .= "LEFT JOIN {$sTableName} USING (OXID) ";
            }
        }

        return $sJoin;
    }