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 ('{4132,4131,4130,4129,4128,4127,4126,4125,4124,4123,4122,4121,4120,4119,4118,4117,4116,4115,4114,4113}'::integer[]))