QUERY PLAN
Group (cost=4027.00..4027.00 rows=2 width=4)
Group Key: remind_user_id
-> Sort (cost=4027.00..4027.00 rows=1 width=4)
Sort Key: remind_user_id
-> Gather (cost=4026.88..4026.99 rows=1 width=4)
Workers Planned: 1
-> Group (cost=3026.88..3026.89 rows=1 width=4)
Group Key: remind_user_id
-> Sort (cost=3026.88..3026.88 rows=1 width=4)
Sort Key: remind_user_id
-> Parallel Seq Scan on tbl_unread_comments (cost=0.00..3026.87 rows=1 width=4)
Filter: (comment_id = 170122)