QUERY PLAN
GroupAggregate (cost=64.95..65.12 rows=9 width=12)
Group Key: parent_id
-> Sort (cost=64.95..64.98 rows=10 width=4)
Sort Key: parent_id
-> Seq Scan on tbl_tasks (cost=0.00..64.79 rows=10 width=4)
Filter: ((status = 1) AND (parent_id = ANY ('{1732,1809,1808,1807,1806,1805,1804,1800,1714,1717,1716}'::integer[])))