QUERY PLAN
GroupAggregate (cost=915.64..916.73 rows=54 width=36)
Group Key: c.project_id
-> Sort (cost=915.64..915.78 rows=55 width=36)
Sort Key: c.project_id
-> Hash Right Join (cost=699.55..914.05 rows=55 width=36)
Hash Cond: (tbl_case_assignments.case_id = c.id)
-> HashAggregate (cost=217.93..324.64 rows=8537 width=36)
Group Key: tbl_case_assignments.case_id
-> Seq Scan on tbl_case_assignments (cost=0.00..174.95 rows=8595 width=12)
-> Hash (cost=480.94..480.94 rows=55 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..480.94 rows=55 width=8)
Filter: (project_id = ANY ('{4184,4182,4183,4181,4174,4173,4172,4171,4170,4169,4168,4167,4166,4144,4161,4164,4151,4157,4155,4152}'::integer[]))