QUERY PLAN
Finalize GroupAggregate (cost=4254.97..4255.41 rows=25 width=10)
Group Key: object_type
-> Sort (cost=4254.97..4255.03 rows=25 width=10)
Sort Key: object_type
-> Gather (cost=4251.64..4254.39 rows=25 width=10)
Workers Planned: 1
-> Partial HashAggregate (cost=3251.64..3251.89 rows=25 width=10)
Group Key: object_type
-> Parallel Seq Scan on tbl_unread_comments (cost=0.00..3246.52 rows=1023 width=2)
Filter: ((NOT is_read) AND (remind_user_id = 1001))