QUERY PLAN
GroupAggregate (cost=915.64..916.73 rows=54 width=36)
Group Key: c.project_id
-> Sort (cost=915.64..915.78 rows=55 width=36)
Sort Key: c.project_id
-> Hash Right Join (cost=699.55..914.05 rows=55 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=480.94..480.94 rows=55 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..480.94 rows=55 width=8)
Filter: (project_id = ANY ('{4184,4182,4166,3991,4079,4078,3950,3899,3886,3855,3760,3590,3576,1983,1963,1938,1929,1925,1460,1240}'::integer[]))