QUERY PLAN
Limit (cost=27.99..28.04 rows=20 width=424)
-> Sort (cost=27.99..28.20 rows=85 width=424)
Sort Key: s.created_at DESC
-> HashAggregate (cost=24.24..25.73 rows=85 width=424)
Group Key: s.id
-> Hash Right Join (cost=12.90..23.90 rows=136 width=408)
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=12.60..12.60 rows=24 width=408)
-> Hash Join (cost=5.91..12.60 rows=24 width=408)
Hash Cond: (thrs.task_group_id = s.id)
-> Seq Scan on tbl_task_group_head_of_relationships thrs (cost=0.00..6.62 rows=24 width=4)
Filter: (user_id = 1001)
-> Hash (cost=4.85..4.85 rows=85 width=408)
-> Seq Scan on tbl_task_groups s (cost=0.00..4.85 rows=85 width=408)