When inserting something in your database, is zend escaping the input given through an example like this:
$options = array(
'bla'=>input
);
$this->insert($options);
— I am still checking the length and validity of the content, partially with Zend_Form
Zend will not escape the input, it will use prepared statements (which is even better).
That’s why you can’t use DB expressions directly, you have to use
Zend_Db_Exprlike this: