protected function _getSimList($sAttributeSql, $iCnt)
    {
        // #523A
        $iAttrPercent = \OxidEsales\Eshop\Core\Registry::getConfig()->getConfigParam('iAttributesPercent') / 100;
        // 70% same attributes
        if (!$iAttrPercent || $iAttrPercent < 0 || $iAttrPercent > 1) {
            $iAttrPercent = 0.70;
        }
        // #1137V iAttributesPercent = 100 doesn't work
        $iHitMin = ceil($iCnt * $iAttrPercent);

        $aExcludeIds = [];
        $aExcludeIds[] = $this->getId();
        if ($this->getParentId()) {
            $aExcludeIds[] = $this->getParentId();
        }

        // we do not use lists here as we don't need this overhead right now
        $sSelect = "select oxobjectid from oxobject2attribute as t1 where
                    ( $sAttributeSql )
                    and t1.oxobjectid NOT IN (" . implode(', ', \OxidEsales\Eshop\Core\DatabaseProvider::getDb()->quoteArray($aExcludeIds)) . ")
                    group by t1.oxobjectid having count(*) >= $iHitMin LIMIT 0, 20";

        return \OxidEsales\Eshop\Core\DatabaseProvider::getDb()->getCol($sSelect);
    }