此查询将返回所有重复的ids，并以逗号分隔的ids名称共享相同的名称：

This query will return all duplicated ids with a comma separated list of ids that share the same name:

select
  t1.id,
  group_concat(t2.id)
from
  tablename t1 inner join tablename t2
  on t1.id<>t2.id and t1.name=t2.name
group by
  t1.id

，此查询将更新说明：

update tablename inner join (
  select
    t1.id,
    group_concat(t2.id) dup
  from
    tablename t1 inner join tablename t2
    on t1.id<>t2.id and t1.name=t2.name
  group by
    t1.id
  ) s on tablename.id = s.id
set
  description = concat('duplicate id in (', s.dup, ')')

请看一个工作小提琴在这里。