I have a form element that contains about 5 fields which final query is going to create by processing values those fields. So I want to send only final query, not all of tho
Remove the name attribute on the fields you do not want submitted to the server.
This is the simplest way to achieve what you want, and it works on all major browsers.
W3 spec talks about only submitting form values when name is present: http://www.w3.org/TR/html401/interact/forms.html#h-17.2