QUERY PLAN
GroupAggregate (cost=640.86..642.68 rows=89 width=36)
Group Key: c.project_id
-> Sort (cost=640.86..641.10 rows=94 width=36)
Sort Key: c.project_id
-> Hash Right Join (cost=448.33..637.78 rows=94 width=36)
Hash Cond: (tbl_case_assignments.case_id = c.id)
-> HashAggregate (cost=192.88..287.13 rows=7540 width=36)
Group Key: tbl_case_assignments.case_id
-> Seq Scan on tbl_case_assignments (cost=0.00..154.92 rows=7592 width=12)
-> Hash (cost=254.28..254.28 rows=94 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..254.28 rows=94 width=8)
Filter: (project_id = ANY ('{1018,1111}'::integer[]))