QUERY PLAN
GroupAggregate (cost=56.25..56.33 rows=5 width=12)
Group Key: parent_id
-> Sort (cost=56.25..56.26 rows=5 width=4)
Sort Key: parent_id
-> Seq Scan on tbl_tasks (cost=0.00..56.19 rows=5 width=4)
Filter: ((status = 1) AND (parent_id = ANY ('{1732,1714,1717,1716,1715}'::integer[])))