QUERY PLAN
Group (cost=4033.46..4033.47 rows=2 width=4)
Group Key: remind_user_id
-> Sort (cost=4033.46..4033.46 rows=1 width=4)
Sort Key: remind_user_id
-> Gather (cost=4033.34..4033.45 rows=1 width=4)
Workers Planned: 1
-> Group (cost=3033.34..3033.35 rows=1 width=4)
Group Key: remind_user_id
-> Sort (cost=3033.34..3033.35 rows=1 width=4)
Sort Key: remind_user_id
-> Parallel Seq Scan on tbl_unread_comments (cost=0.00..3033.33 rows=1 width=4)
Filter: (comment_id = 170412)