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 ('{4098,4111,4096,4086,4063,4057,4052,3991,4079,4078,4014,3950,3927,3949,3751,3874,3899,3886,3872,3857}'::integer[]))