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