QUERY PLAN
Aggregate (cost=50.86..50.87 rows=1 width=8)
-> Sort (cost=49.48..49.71 rows=92 width=222)
Sort Key: s.created_at DESC
-> HashAggregate (cost=45.56..46.48 rows=92 width=222)
Group Key: s.id
-> Hash Right Join (cost=21.26..40.71 rows=1942 width=12)
Hash Cond: (thrs.task_group_id = s.id)
-> Seq Scan on tbl_task_group_head_of_relationships thrs (cost=0.00..5.70 rows=370 width=4)
-> Hash (cost=15.22..15.22 rows=483 width=12)
-> Hash Right Join (cost=6.07..15.22 rows=483 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=4.92..4.92 rows=92 width=20)
-> Seq Scan on tbl_task_groups s (cost=0.00..4.92 rows=92 width=20)