Possible to do a delete with a HAVING clause?

Question

I want to do something like below:

DELETE UserPredictions
  GROUP BY UserId
  HAVING COUNT(*) < 500

But I\'m getting a syntax error. Is

Answer 1

Try this nested query:

DELETE FROM UserPredictions  
WHERE UserId IN (SELECT UserId
                 FROM UserPredictions 
                 GROUP BY UserId
                 HAVING COUNT(*) < 500)