protected function _selectLanguageParamValues($sParamName, $sShopId = null)
    {
        $oDb = \OxidEsales\Eshop\Core\DatabaseProvider::getDb(\OxidEsales\Eshop\Core\DatabaseProvider::FETCH_MODE_ASSOC);
        $oConfig = \OxidEsales\Eshop\Core\Registry::getConfig();

        $sQuery = "
            select " . $oConfig->getDecodeValueQuery() . " as oxvarvalue
            from oxconfig
            where oxvarname = '{$sParamName}' ";

        if (!empty($sShopId)) {
            $sQuery .= " and oxshopid = '{$sShopId}' limit 1";
        }

        return $oDb->getAll($sQuery);
    }