QUERY PLAN
GroupAggregate (cost=761.29..762.52 rows=61 width=36)
Group Key: c.project_id
-> Sort (cost=761.29..761.45 rows=63 width=36)
Sort Key: c.project_id
-> Hash Right Join (cost=557.69..759.41 rows=63 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=351.67..351.67 rows=63 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..351.67 rows=63 width=8)
Filter: (project_id = ANY ('{3927,3807,3580,3666,3461,3949,3827,3751,3931,3902}'::integer[]))