QUERY PLAN
GroupAggregate (cost=482.52..483.48 rows=54 width=12)
Group Key: project_id
-> Sort (cost=482.52..482.66 rows=55 width=8)
Sort Key: project_id
-> Seq Scan on tbl_cases (cost=0.00..480.94 rows=55 width=8)
Filter: (project_id = ANY ('{4186,4185,4184,4183,4182,4181,4179,4175,4174,4173,4172,4171,4170,4169,4168,4167,4166,4164,4161,4158}'::integer[]))