QUERY PLAN
GroupAggregate (cost=39.81..39.83 rows=1 width=12)
Group Key: task_group_id
-> Sort (cost=39.81..39.82 rows=1 width=4)
Sort Key: task_group_id
-> Seq Scan on tbl_tasks (cost=0.00..39.80 rows=1 width=4)
Filter: ((status = 0) AND (task_group_id = ANY ('{200,195,194,192}'::integer[])))