QUERY PLAN
Finalize GroupAggregate (cost=4797.59..4798.43 rows=48 width=11)
Group Key: object_type
-> Sort (cost=4797.59..4797.71 rows=48 width=11)
Sort Key: object_type
-> Gather (cost=4790.97..4796.25 rows=48 width=11)
Workers Planned: 1
-> Partial HashAggregate (cost=3790.97..3791.45 rows=48 width=11)
Group Key: object_type
-> Parallel Seq Scan on tbl_unread_comments (cost=0.00..3784.44 rows=1305 width=3)
Filter: ((NOT is_read) AND (remind_user_id = 1001))