getting a subset of records from one table that don't match a second table

[Nick Abelson]

Hi
I have two tables: questions and correct questions for user x
I need to get all the questions that aren't in the correct questions table
So i think i need to do this:
get all the questions then looping through all the correctly answered questions for user x to check there is not a match. If there is a match then get the next question and repeat until i don't get a match

is that correct approach? if so how do i do this in sql? if there is a better way how would i do it?

thanks