QUERY PLAN
GroupAggregate (cost=464.60..465.52 rows=52 width=12)
Group Key: project_id
-> Sort (cost=464.60..464.74 rows=53 width=8)
Sort Key: project_id
-> Seq Scan on tbl_cases (cost=0.00..463.09 rows=53 width=8)
Filter: (project_id = ANY ('{3515,3514,3513,3503,3467,3424,3441,3372,3371,3216,3300,3281,3251,3276,3274,3263,3246,3225,3209,3208}'::integer[]))