QUERY PLAN
GroupAggregate (cost=374.21..374.68 rows=27 width=12)
Group Key: project_id
-> Sort (cost=374.21..374.27 rows=27 width=8)
Sort Key: project_id
-> Seq Scan on tbl_cases (cost=0.00..373.56 rows=27 width=8)
Filter: (project_id = ANY ('{3854,3796,4024,3957,4146,4005,4149,4136,4133,4165}'::integer[]))