Question

I have a grouped query, and would like to filter it based on count(*)

Can I do this without a subquery?

This is what I have currently:

select * 
  from (select ID,
               count(*) cnt
          from name
      group by ID)
 where cnt > 1;

Answer 1

what you are looking for is the HAVING clause:

select ID, count(*) cnt
from name
group by ID
having count(*) > 1;