下面的SQL有什么问题？ 100

可以更新成功的SQL

update
  db_quick_export_task
set
  sn = concat_ws('_', 'deleted', sn)
where
  company_id in (233463, 341719, 334481)
  and create_time >= '2023-04-11'
  and file_url is not null

不可以更新成功的SQL

update
  db_quick_export_task
set
  sn = concat_ws('_', sn, 'deleted')
where
  company_id in (233463, 341719, 334481)
  and create_time >= '2023-04-11'
  and file_url is not null

看起来没啥区别啊？为什么下面的SQL不能执行？