QUERY PLAN
GroupAggregate (cost=810.04..812.16 rows=104 width=36)
Group Key: c.project_id
-> Sort (cost=810.04..810.31 rows=109 width=36)
Sort Key: c.project_id
-> Hash Right Join (cost=592.48..806.35 rows=109 width=36)
Hash Cond: (tbl_case_assignments.case_id = c.id)
-> HashAggregate (cost=217.55..323.95 rows=8512 width=36)
Group Key: tbl_case_assignments.case_id
-> Seq Scan on tbl_case_assignments (cost=0.00..174.70 rows=8570 width=12)
-> Hash (cost=373.56..373.56 rows=109 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..373.56 rows=109 width=8)
Filter: (project_id = ANY ('{4146,4135,3954,3461,3488,3702,3699,3700,3451,3417}'::integer[]))