When amending a query to add a new column to the select portion of the query,using aliasname. and then further filtering e.g. typing 'A', Toad displays a blank screen instead of the columns that start with 'A'. So typing aliasname. brings up a list of columns OK. It's only when it's further filtered by letter, is when the list is empty.
You need to be signed in and under a current maintenance contract to view premium knowledge articles.