QUERY PLAN
Aggregate (cost=32.00..32.01 rows=1 width=8)
-> Sort (cost=31.97..31.98 rows=2 width=222)
Sort Key: s.created_at DESC
-> HashAggregate (cost=31.94..31.96 rows=2 width=222)
Group Key: s.id
-> Hash Right Join (cost=19.97..31.84 rows=40 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=19.87..19.87 rows=8 width=12)
-> Hash Right Join (cost=13.18..19.87 rows=8 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=13.15..13.15 rows=2 width=20)
-> Seq Scan on tbl_task_groups s (cost=0.00..13.15 rows=2 width=20)
Filter: (client_id = 982)