QUERY PLAN
Finalize GroupAggregate (cost=4050.13..4056.49 rows=25 width=10)
Group Key: object_type
-> Gather Merge (cost=4050.13..4056.11 rows=25 width=10)
Workers Planned: 1
-> Partial GroupAggregate (cost=3050.12..3053.29 rows=25 width=10)
Group Key: object_type
-> Sort (cost=3050.12..3051.09 rows=390 width=2)
Sort Key: object_type
-> Parallel Seq Scan on tbl_unread_comments (cost=0.00..3033.33 rows=390 width=2)
Filter: ((NOT is_read) AND (remind_user_id = 5300))