QUERY PLAN
Finalize GroupAggregate (cost=4499.43..4501.80 rows=21 width=11)
Group Key: object_type
-> Gather Merge (cost=4499.43..4501.51 rows=16 width=11)
Workers Planned: 1
-> Partial GroupAggregate (cost=3499.42..3499.70 rows=16 width=11)
Group Key: object_type
-> Sort (cost=3499.42..3499.46 rows=16 width=3)
Sort Key: object_type
-> Parallel Seq Scan on tbl_unread_comments (cost=0.00..3499.10 rows=16 width=3)
Filter: ((NOT is_read) AND (remind_user_id = 5064))