QUERY PLAN
GroupAggregate (cost=124.53..124.63 rows=6 width=12)
Group Key: remain_task.task_group_id
-> Sort (cost=124.53..124.54 rows=6 width=4)
Sort Key: remain_task.task_group_id
-> Hash Anti Join (cost=60.60..124.45 rows=6 width=4)
Hash Cond: (remain_task.id = child_task.parent_id)
-> Seq Scan on tbl_tasks remain_task (cost=0.00..63.78 rows=6 width=8)
Filter: ((status <> 1) AND (task_group_id = ANY ('{67,60,59,58,57,56,55,51,46,43}'::integer[])))
-> Hash (cost=44.71..44.71 rows=1271 width=4)
-> Seq Scan on tbl_tasks child_task (cost=0.00..44.71 rows=1271 width=4)