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 ('{3478,3464,3455,3454,3440,3439,3438,3437,3428,3398,3366,3363,3348,3309,3293,3280,3257,3256,3254,3244}'::integer[]))