if not exists (select * FROM sys.syscolumns where name = 'SortPriority' AND id = object_id(N'dbo.ConnectionHandbook'))
	alter table dbo.ConnectionHandbook add
        SortPriority int not null constraint DF_ConnectionHandbook_SortPriority default (0),
        IsDefault bit not null constraint DF_ConnectionHandbook_IsDefault default (0);