QUERY PLAN
GroupAggregate (cost=352.32..352.79 rows=27 width=12)
Group Key: project_id
-> Sort (cost=352.32..352.38 rows=27 width=8)
Sort Key: project_id
-> Seq Scan on tbl_cases (cost=0.00..351.67 rows=27 width=8)
Filter: (project_id = ANY ('{3955,3946,3944,3952,3942,3943,3888,3778,3486,3580}'::integer[]))