• FYI.

    Instead of figuring out how to find the last unsaved executed query in SQL QA,  I started using Teradata SQL Assistant tool which can be used against most of the databases and stores all the queries in a history file.  The cool thing about this tool is that history file is displayed right in this analyzer in a tabular format and you can just select and also search on whatever previous queries you might have executed.

    Thanks to all for your suggestions.