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 ('{4113,4112,4111,4109,4103,4102,4101,4100,4099,4098,4097,4096,4095,4094,4093,4092,4091,4090,4089,4088}'::integer[]))