QUERY PLAN
GroupAggregate (cost=729.15..729.53 rows=19 width=36)
Group Key: c.project_id
-> Sort (cost=729.15..729.20 rows=19 width=36)
Sort Key: c.project_id
-> Hash Right Join (cost=527.03..728.74 rows=19 width=36)
Hash Cond: (tbl_case_assignments.case_id = c.id)
-> HashAggregate (cost=205.23..305.58 rows=8028 width=36)
Group Key: tbl_case_assignments.case_id
-> Seq Scan on tbl_case_assignments (cost=0.00..164.82 rows=8082 width=12)
-> Hash (cost=321.56..321.56 rows=19 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..321.56 rows=19 width=8)
Filter: (project_id = ANY ('{3932,3933,3895,3837,3888,3796,3807}'::integer[]))