QUERY PLAN
Aggregate (cost=98.76..98.77 rows=1 width=8)
-> Sort (cost=98.74..98.75 rows=1 width=224)
Sort Key: s.status, s.end_at, s.created_at DESC
InitPlan 1 (returns $0)
-> Aggregate (cost=47.84..47.84 rows=1 width=32)
-> Seq Scan on tbl_tasks s_1 (cost=0.00..47.73 rows=43 width=13)
Filter: ((tree_path IS NOT NULL) AND (head_of = 1001))
-> Group (cost=50.88..50.89 rows=1 width=224)
Group Key: s.id
-> Sort (cost=50.88..50.89 rows=1 width=18)
Sort Key: s.id
-> Seq Scan on tbl_tasks s (cost=0.00..50.87 rows=1 width=18)
Filter: ((parent_id IS NULL) AND (tree_path @> $0) AND (head_of = 1001))