QUERY PLAN
GroupAggregate (cost=481.58..482.53 rows=54 width=12)
Group Key: project_id
-> Sort (cost=481.58..481.72 rows=55 width=8)
Sort Key: project_id
-> Seq Scan on tbl_cases (cost=0.00..479.99 rows=55 width=8)
Filter: (project_id = ANY ('{4024,4149,4136,4165,4131,4125,4088,3778,4181,4177,4174,4173,4148,4143,4097,4034,4002,4172,4171,4170}'::integer[]))