SQL Server 手机、身份证中间转为星号

 SELECT 
      UniqID as 账号,isnull(NickName,'') as 姓名,
      case when Tel1 is null or Tel1='' then '' else 
    CONCAT(
        LEFT(Tel1, 3), -- 前三位
        '****',               -- 四个星号
        RIGHT(Tel1, 4) -- 后四位
    ) end AS 手机号,

     case when IDCard is null or IDCard='' then '' else 
    CONCAT(
        LEFT(IDCard, 3), 
        '***********',               
        RIGHT(IDCard, 4) 
    ) end AS 身份证,
    isnull(b.ShortName,'') 地区,
    TypeCode 用户类型
FROM  Acc_Persons a with(nolock) left join WS_Department b with(nolock)
on a.Detail=b.DepartmentCode
where TypeCode in('主管部门','市县主管部门')
order by b.SortNum