xp_grantlogin (Transact-SQL MetaData) Definition

Please note: that the following source code is provided and copyrighted by Microsoft and is for educational purpose only.
The meta data is from an SQL 2012 Server.

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Definition:

sys.xp_grantlogin(nvarchar @loginame
, varchar @logintype)

MetaData:

 create procedure sys.xp_grantlogin  
    @loginame       sysname,  
    @logintype      varchar(5) = Null       --  ignored unless 'admin'  
AS  
    set nocount on  
  
    --  IF NAME NOT 'DOMAIN\USER', ADD DEFAULT DOMAIN --   
    if (charindex('\', @loginame) = 0)  
    begin  
        select @loginame = default_domain() + '\' + @loginame  
    end  
  
    Declare @ret   int     --  return value of sp call  
    execute @ret = sys.sp_grantlogin @loginame  
    if (@ret = 0 and @logintype = 'admin')  
        execute @ret = sys.sp_addsrvrolemember @loginame, 'sysadmin'  
    return (@ret)