QUERY PLAN
GroupAggregate (cost=482.52..483.48 rows=54 width=12)
Group Key: project_id
-> Sort (cost=482.52..482.66 rows=55 width=8)
Sort Key: project_id
-> Seq Scan on tbl_cases (cost=0.00..480.94 rows=55 width=8)
Filter: (project_id = ANY ('{4024,4005,4149,4136,4133,4184,4182,4165,4163,4147,4134,4131,4125,4109,4088,4083,3976,3778,4185,4183}'::integer[]))