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 ('{4091,4081,4080,3974,3970,3959,3256,4154,4152,4150,4139,4142,4128,4158,4130,4124,4127,4123,4121,4120}'::integer[]))