One more thing: if you click on ColumnB first to sort its values, then click on columnA to sort its values, you will see what you want. The results will be primarily sorted alphabetically based on ColumnA values, but then a secondary sort is done on ColumnB. There is no official way to specify multiple sort fields but you can accomplish the sorting you want on a per-query basis. Note that this has to be done each time you run a query in a new view. As far as I know, this behavior is only limited to 2 columns sorted in this way.
