Today I read How to Automatically Clear Browsing History in Chrome on Exit and learned how to clear cookies etc when closing the Chromium web browser. Basically it’s Settings -> Privacy and security -> Site settings -> Cookies and site data -> Clear cookies and site data when you quit Chromium.
The SQL History feature of my phpMyAdmin setup wasn’t working, the history table had been configured correctly as ‘pma_history’ but there was no data being written into that table when I ran queries and the SQL History tab of the query window just showed a blank.
Eventually I figured out that in order for the pma_history table to be populated I needed to set the QueryHistoryDB setting to true. So I did that and now SQL History is working!