效果如下：
SQLServer中查询的数字列前面补0返回指定长度的字符串
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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