QUERY PLAN
Subquery Scan on sub (cost=302.60..302.63 rows=1 width=256)
Filter: (sub.id = 1575)
-> WindowAgg (cost=302.60..302.62 rows=1 width=256)
-> Sort (cost=302.60..302.60 rows=1 width=248)
Sort Key: sub_1.created_at DESC
-> Subquery Scan on sub_1 (cost=302.57..302.59 rows=1 width=248)
-> Group (cost=302.57..302.58 rows=1 width=248)
Group Key: s.id
InitPlan 1 (returns $0)
-> Aggregate (cost=149.79..149.80 rows=1 width=32)
-> Seq Scan on tbl_tasks s_1 (cost=0.00..149.79 rows=1 width=13)
Filter: ((tree_path IS NOT NULL) AND (head_of = 1001) AND (status = '0'::smallint))
-> Sort (cost=152.76..152.77 rows=1 width=248)
Sort Key: s.id
-> Seq Scan on tbl_tasks s (cost=0.00..152.75 rows=1 width=248)
Filter: ((parent_id IS NULL) AND (tree_path @> $0) AND (head_of = 1001) AND (status = '0'::smallint))