QUERY PLAN
Aggregate (cost=44.43..44.44 rows=1 width=8)
-> Sort (cost=43.00..43.24 rows=95 width=218)
Sort Key: s.created_at DESC
-> HashAggregate (cost=38.93..39.88 rows=95 width=218)
Group Key: s.id
-> Hash Right Join (cost=14.34..36.15 rows=1112 width=12)
Hash Cond: (turs.task_group_id = s.id)
-> Seq Scan on tbl_task_group_user_relationships turs (cost=0.00..8.13 rows=513 width=4)
-> Hash (cost=11.76..11.76 rows=206 width=12)
-> Hash Right Join (cost=7.14..11.76 rows=206 width=12)
Hash Cond: (thrs.task_group_id = s.id)
-> Seq Scan on tbl_task_group_head_of_relationships thrs (cost=0.00..4.06 rows=206 width=4)
-> Hash (cost=5.95..5.95 rows=95 width=16)
-> Seq Scan on tbl_task_groups s (cost=0.00..5.95 rows=95 width=16)