QUERY PLAN
Aggregate (cost=49.06..49.07 rows=1 width=8)
-> Sort (cost=47.65..47.89 rows=94 width=218)
Sort Key: s.created_at DESC
-> HashAggregate (cost=43.63..44.57 rows=94 width=218)
Group Key: s.id
-> Hash Right Join (cost=20.99..41.15 rows=992 width=12)
Hash Cond: (turs.task_group_id = s.id)
-> Seq Scan on tbl_task_group_user_relationships turs (cost=0.00..7.83 rows=483 width=4)
-> Hash (cost=18.57..18.57 rows=193 width=12)
-> Hash Right Join (cost=14.12..18.57 rows=193 width=12)
Hash Cond: (thrs.task_group_id = s.id)
-> Seq Scan on tbl_task_group_head_of_relationships thrs (cost=0.00..3.93 rows=193 width=4)
-> Hash (cost=12.94..12.94 rows=94 width=20)
-> Seq Scan on tbl_task_groups s (cost=0.00..12.94 rows=94 width=20)