QUERY PLAN
Finalize GroupAggregate (cost=4802.27..4805.07 rows=24 width=11)
Group Key: object_type
-> Gather Merge (cost=4802.27..4804.74 rows=19 width=11)
Workers Planned: 1
-> Partial GroupAggregate (cost=3802.26..3802.59 rows=19 width=11)
Group Key: object_type
-> Sort (cost=3802.26..3802.30 rows=19 width=3)
Sort Key: object_type
-> Parallel Seq Scan on tbl_unread_comments (cost=0.00..3801.85 rows=19 width=3)
Filter: ((NOT is_read) AND (remind_user_id = 1000))