Question

Is it possible to make query like this? That has some error…
Query should check if user did answer question with q.id.

SELECT pictureid,
       id,
       points 
  FROM questions q 
 WHERE IF (q.id NOT IN (SELECT questions_id 
                          FROM history h 
                         WHERE h.users_id = 3))

Answer 1

SELECT pictureid,id,points 
FROM questions q 
WHERE q.id NOT IN (
    SELECT questions_id 
    FROM history  
    WHERE users_id = 3)