QUERY PLAN
Aggregate (cost=296.74..296.75 rows=1 width=8)
-> Sort (cost=296.72..296.73 rows=1 width=224)
Sort Key: s.created_at DESC
InitPlan 1 (returns $0)
-> Aggregate (cost=146.89..146.90 rows=1 width=32)
-> Seq Scan on tbl_tasks s_1 (cost=0.00..146.82 rows=27 width=13)
Filter: ((tree_path IS NOT NULL) AND (status = '0'::smallint))
-> Group (cost=149.80..149.81 rows=1 width=224)
Group Key: s.id
-> Sort (cost=149.80..149.80 rows=1 width=12)
Sort Key: s.id
-> Seq Scan on tbl_tasks s (cost=0.00..149.79 rows=1 width=12)
Filter: ((parent_id IS NULL) AND (tree_path @> $0) AND (status = '0'::smallint))