QUERY PLAN
Group (cost=4322.50..4322.50 rows=2 width=4)
Group Key: remind_user_id
-> Sort (cost=4322.50..4322.50 rows=1 width=4)
Sort Key: remind_user_id
-> Gather (cost=4322.38..4322.49 rows=1 width=4)
Workers Planned: 1
-> Group (cost=3322.38..3322.39 rows=1 width=4)
Group Key: remind_user_id
-> Sort (cost=3322.38..3322.38 rows=1 width=4)
Sort Key: remind_user_id
-> Parallel Seq Scan on tbl_unread_comments (cost=0.00..3322.37 rows=1 width=4)
Filter: (comment_id = 191300)