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 ('{4127,4111,4098,4096,4086,4079,4078,4063,4057,4052,4014,3991,3950,3949,3927,3899,3886,3874,3872,3857}'::integer[]))