DboSource::_quoteFields PHP Method

    protected function _quoteFields($conditions)
    {
        $start = $end = null;
        $original = $conditions;
        if (!empty($this->startQuote)) {
            $start = preg_quote($this->startQuote);
        }
        if (!empty($this->endQuote)) {
            $end = preg_quote($this->endQuote);
        }
        $conditions = str_replace(array($start, $end), '', $conditions);
        $conditions = preg_replace_callback('/(?:[\'\\"][^\'\\"\\\\]*(?:\\\\.[^\'\\"\\\\]*)*[\'\\"])|([a-z0-9_][a-z0-9\\-_]*\\.[a-z0-9_][a-z0-9_\\-]*)/i', array(&$this, '_quoteMatchedField'), $conditions);
        if ($conditions !== null) {
            return $conditions;
        }
        return $original;
    }