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 ('{4120,4103,4119,4118,4037,3993,3992,3986,3580,4113,4098,4116,4094,4115,4112,4111,4101,4100,4092,4096}'::integer[]))