SQLServer中查询的数字列前面补0返回指定长度的字符串

/****** Script for SelectTopNRows command from SSMS  ******/
SELECT TOP 1000 [ID]
      ,[SN]
      ,[Name]
  FROM [EduDB].[dbo].[TestTab]
  select Right(‘0123456‘,SN) from TestTab;
  select RIGHT(REPLICATE(‘0‘,5)+CAST(SN AS varchar(10)),5) AS ‘SN‘ from TestTab;
  select RIGHT(‘00000000‘+CAST(SN as varchar(10)),5) as ‘sn‘ from TestTab