QUERY PLAN
Finalize GroupAggregate (cost=4810.85..4813.66 rows=24 width=11)
Group Key: object_type
-> Gather Merge (cost=4810.85..4813.32 rows=19 width=11)
Workers Planned: 1
-> Partial GroupAggregate (cost=3810.84..3811.18 rows=19 width=11)
Group Key: object_type
-> Sort (cost=3810.84..3810.89 rows=19 width=3)
Sort Key: object_type
-> Parallel Seq Scan on tbl_unread_comments (cost=0.00..3810.44 rows=19 width=3)
Filter: ((NOT is_read) AND (remind_user_id = 1000))