QUERY PLAN
Finalize GroupAggregate (cost=4033.63..4035.82 rows=16 width=10)
Group Key: object_type
-> Gather Merge (cost=4033.63..4035.58 rows=15 width=10)
Workers Planned: 1
-> Partial GroupAggregate (cost=3033.62..3033.89 rows=15 width=10)
Group Key: object_type
-> Sort (cost=3033.62..3033.66 rows=15 width=2)
Sort Key: object_type
-> Parallel Seq Scan on tbl_unread_comments (cost=0.00..3033.33 rows=15 width=2)
Filter: ((NOT is_read) AND (remind_user_id = 1000))