QUERY PLAN
GroupAggregate (cost=64.42..64.58 rows=9 width=12)
Group Key: parent_id
-> Sort (cost=64.42..64.44 rows=10 width=4)
Sort Key: parent_id
-> Seq Scan on tbl_tasks (cost=0.00..64.25 rows=10 width=4)
Filter: ((status = 1) AND (parent_id = ANY ('{1596,1734,58,63,76,67,64,65,79,134}'::integer[])))