QUERY PLAN
HashAggregate (cost=95.08..95.30 rows=22 width=12)
Group Key: parent_id
-> Seq Scan on tbl_tasks (cost=0.00..94.90 rows=36 width=4)
Filter: ((status = 1) AND (parent_id = ANY ('{1824,1772,1754,1751,1746,1735,1697,1696,1687,1684,1683,1671,1670,1647,1641,1426,1357,1350,1349,1348,1347,1252,1249,1248,1246,1245,1242,1240,1239,1238}'::integer[])))