Hey Everyone!
I have been watching SQLancer: Upgrading the Currently-supported Database System Version video to get an idea on how to upgrade to new versions, but I couldn't understand how testing is being done.

How can I get the DuckDB old build as tested in the video at 12:04 to run custom queries? Do I have to install DuckDB externally or is it some file I am missing?
(Apologies if this a not-so-smart question)