Amazed at the simplicity of upgrading SQL Server (2017) on Linux to 2019. It was literally remove the 2017 repository, add the 2019 repository, then run a
dist-upgrade. I had to log in as
sa afterwards, to kick the instance out of admin only mode, and it was done.
Longest part was waiting for the 223MB upgrade to download over the 10Mbps line I have; otherwise it literally took about 30 seconds.
Excuse my typos and sometimes awful grammar. My fingers work faster than my brain does.