QUERY PLAN
Aggregate (cost=30.73..30.74 rows=1 width=8)
-> Sort (cost=29.31..29.55 rows=95 width=218)
Sort Key: s.created_at DESC
-> HashAggregate (cost=25.24..26.19 rows=95 width=218)
Group Key: s.id
-> Hash Right Join (cost=12.35..24.67 rows=227 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=11.82..11.82 rows=42 width=12)
-> Hash Join (cost=7.14..11.82 rows=42 width=12)
Hash Cond: (thrs.task_group_id = s.id)
-> Seq Scan on tbl_task_group_head_of_relationships thrs (cost=0.00..4.58 rows=42 width=4)
Filter: (user_id = 1000)
-> 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)