QUERY PLAN
Aggregate (cost=106.67..106.68 rows=1 width=8)
-> Sort (cost=106.65..106.66 rows=1 width=224)
Sort Key: s.end_at, s.created_at DESC
InitPlan 1 (returns $0)
-> Aggregate (cost=51.84..51.84 rows=1 width=32)
-> Seq Scan on tbl_tasks s_1 (cost=0.00..51.81 rows=10 width=13)
Filter: ((tree_path IS NOT NULL) AND (status = '0'::smallint) AND ((head_of = 5064) OR (head_of = 1000)))
-> Group (cost=54.79..54.80 rows=1 width=224)
Group Key: s.id
-> Sort (cost=54.79..54.80 rows=1 width=18)
Sort Key: s.id
-> Seq Scan on tbl_tasks s (cost=0.00..54.78 rows=1 width=18)
Filter: ((parent_id IS NULL) AND (tree_path @> $0) AND (status = '0'::smallint) AND ((head_of = 5064) OR (head_of = 1000)))