QUERY PLAN
GroupAggregate (cost=896.64..898.59 rows=96 width=36)
Group Key: c.project_id
-> Sort (cost=896.64..896.89 rows=101 width=36)
Sort Key: c.project_id
-> Hash Right Join (cost=678.77..893.27 rows=101 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=459.58..459.58 rows=101 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..459.58 rows=101 width=8)
Filter: (project_id = ANY ('{4184,4182,4174,4173,4170,4167,4166,4144,4152,4150,3991,4014,3703,3679,3623,3265,2939,1018}'::integer[]))