Update an query using a loop valuee

Question

here is what i am doing?
getting the result from the query: showing the form as:
thereafter the updation is performed as:
<cfquery datasource="#DSN#">
UPDATE answer SET
answer = '#Form.ans1[idx]#'
where ID = #Form.G_Q#
</cfquery>
on new page, use of array or structure will be role playing
here, but i am confused how this is achieved..

Answer 1

In the example code you posted, you would have wound up with
4 form fields, all named "ans1". This would have resulted in a
comma-delimited list of your answers on the form's action page.
this is probably not a great solution, especially since you are
dealing with text that may contain commas. By creating a new
numbered field for each answer, you can separate out the answer
text and process it on the next page.
For the update, you can loop over the fields you created
using CF's scope structure notation: Form["MyVar"]. Using
<cfqueryparam> will speed up your query also give you some
protection against SQL injection.
In the future, its very helpful to use <cfdump
var="#Form#"> on the form processing page to see what form data
is being passed and what fields are available.