Question

Say I had the two tables below, how do I find all questions with no (0) answers?

question
---------
id
content

and

answer
------
id
question_id
content

ie, question 1->* answers

— Edit —

To add to my question, how would I retrieve count of answers for each question?

Answer 1

select * from question q where not exists (select 1 from answer a where a.question_id=q.id)

answer to edited question:

select q.id, content, count(a.id)
  from question q
  left outer join answer a
    on q.id = a.question_id
 group by q.id