QUERY PLAN
Finalize GroupAggregate (cost=4795.27..4803.18 rows=48 width=11)
Group Key: object_type
-> Gather Merge (cost=4795.27..4802.46 rows=48 width=11)
Workers Planned: 1
-> Partial GroupAggregate (cost=3795.26..3797.05 rows=48 width=11)
Group Key: object_type
-> Sort (cost=3795.26..3795.69 rows=175 width=3)
Sort Key: object_type
-> Parallel Seq Scan on tbl_unread_comments (cost=0.00..3788.74 rows=175 width=3)
Filter: ((NOT is_read) AND (remind_user_id = 1015))