private function isNotQuotable($val)
    {
        $keywords = [
            'true',
            'false',
            'null',
            'NOW\(\)',
            'COUNT\(.*\)',
            'MAX\(.*\)',
            '\d+'
        ];

        $keywords = array_merge($keywords, $_SESSION['behat']['GenesisSqlExtension']['notQuotableKeywords']);

        // Check if the val is a keyword
        foreach ($keywords as $keyword) {
            if (preg_match(sprintf('/^%s$/is', $keyword), $val)) {
                return true;
            }
        }

        return false;
    }