sql 多列合并成一个字符串

for xml path()以xml形式展现

select ‘|’+Name from table for xml path('')

stuff(param1,startIndex,length,param2)
将param1中的startIndex开始，删除length字符串，用param2代替
//去掉第一个 ‘|’

SELECT DISTINCT Name, 
STUFF((SELECT ',' + Name FROM table 
WHERE Name = T.Name FOR XML PATH('')), 1,1, '') AS name2 FROM table AS T