Retrieve column names based on judgment

/*
Get friend list
*/

Alter ProcedureDBO. sp_getfriendlist
@ OwneridInt
As

Select
Groupid, usernumber, nickname, sex, age, [ Name ] , Info, grade, tel, shopid, province, city, job, department, mphone, shopname, online, status, friendcheck, shopuid, underwrite,
Case  
When Truename Is   Null   Then   [ Name ] -- When truename is null, use name
When Truename =   ''   Then   [ Name ] -- When truename is '', use name
Else Truename
End
As   [ Namememo ]

From View_friendlist
Where Ownid =   @ Ownerid
Order   By Friendid
For XML Raw
Return
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