QUERY PLAN
GroupAggregate (cost=374.81..375.29 rows=27 width=12)
Group Key: project_id
-> Sort (cost=374.81..374.88 rows=27 width=8)
Sort Key: project_id
-> Seq Scan on tbl_cases (cost=0.00..374.17 rows=27 width=8)
Filter: (project_id = ANY ('{4137,4095,4065,4062,4049,4041,4040,4037,4035,4023}'::integer[]))