将一列数据拼接成一个字符串
SELECT STUFF( (SELECT Distinct '|'+ProductCode FROM [chexian].[dbo].[ProxyServer] WHERE CompanyID=1069 FOR XML PATH('') ),1,1,'')
SELECT STUFF( (SELECT Distinct '|'+ProductCode FROM [chexian].[dbo].[ProxyServer] WHERE CompanyID=1069 FOR XML PATH('') ),1,1,'')