QUERY PLAN
Group (cost=4808.42..4808.43 rows=2 width=4)
Group Key: remind_user_id
-> Sort (cost=4808.42..4808.43 rows=1 width=4)
Sort Key: remind_user_id
-> Gather (cost=4808.30..4808.41 rows=1 width=4)
Workers Planned: 1
-> Group (cost=3808.30..3808.31 rows=1 width=4)
Group Key: remind_user_id
-> Sort (cost=3808.30..3808.31 rows=1 width=4)
Sort Key: remind_user_id
-> Parallel Seq Scan on tbl_unread_comments (cost=0.00..3808.29 rows=1 width=4)
Filter: (comment_id = 220242)