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 ('{4165,4163,4162,4133,4132,4119,4118,4113,4109,4095,4091,4089,4083,4082,4075,4072,4060,4047,4046,4042}'::integer[]))