QUERY PLAN
GroupAggregate (cost=330.28..330.71 rows=25 width=12)
Group Key: project_id
-> Sort (cost=330.28..330.34 rows=25 width=8)
Sort Key: project_id
-> Seq Scan on tbl_cases (cost=0.00..329.69 rows=25 width=8)
Filter: (project_id = ANY ('{3817,3777,3783,3805,3811,3731,3819,3814,3786,3818}'::integer[]))