QUERY PLAN
Aggregate (cost=294.06..294.07 rows=1 width=8)
-> Sort (cost=294.04..294.04 rows=1 width=224)
Sort Key: s.created_at DESC
InitPlan 1 (returns $0)
-> Aggregate (cost=147.00..147.01 rows=1 width=32)
-> Seq Scan on tbl_tasks s_1 (cost=0.00..144.00 rows=1200 width=13)
Filter: (tree_path IS NOT NULL)
-> Group (cost=147.01..147.02 rows=1 width=224)
Group Key: s.id
-> Sort (cost=147.01..147.01 rows=1 width=12)
Sort Key: s.id
-> Seq Scan on tbl_tasks s (cost=0.00..147.00 rows=1 width=12)
Filter: ((parent_id IS NULL) AND (tree_path @> $0))