mssqlserver把数据库所有用户存储过程的EXEC权限赋另一角色

$sql="create procedure sp_GrantProce(@username varchar(40))
as
begin
declare @user varchar(20),@name varchar(40)
declare t_cursor cursor for
select user_name(uid) as users,name from sysobjects where (xtype= 'P ' or xtype= 'X ') and status> 0

open t_cursor

fetch next from t_cursor into @user,@name

while @@fetch_status=0
begin
exec( 'grant execute on + '. + ' to )
fetch next from t_cursor into @user,@name
end

close t_cursor
deallocate t_cursor
end
go";