QUERY PLAN
GroupAggregate (cost=827.52..828.18 rows=33 width=36)
Group Key: c.project_id
-> Sort (cost=827.52..827.60 rows=33 width=36)
Sort Key: c.project_id
-> Hash Right Join (cost=612.81..826.69 rows=33 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=394.85..394.85 rows=33 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..394.85 rows=33 width=8)
Filter: (project_id = ANY ('{4184,4182,4183,4181,4173,4171,4152,4150,4158,2939,4179,4175}'::integer[]))