QUERY PLAN
GroupAggregate (cost=810.08..811.62 rows=76 width=36)
Group Key: c.project_id
-> Sort (cost=810.08..810.28 rows=79 width=36)
Sort Key: c.project_id
-> Hash Right Join (cost=593.09..807.59 rows=79 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=374.17..374.17 rows=79 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..374.17 rows=79 width=8)
Filter: (project_id = ANY ('{1018,4185,4184,4182,4183,4181,4174,4173,4179,4079}'::integer[]))