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 ('{4184,4182,4166,3991,4079,4078,3950,3899,3886,3855,3760,3590,3576,1983,1963,1938,1929,1925,1460,1240}'::integer[]))