I took the tagInfoSql database (version 12.45) downloaded from the main page and converted it to MySQL.
- tagInfoSql (https://exiftool.org/tagInfoSql.zip): SQLite database of ExifTool tag repository, including Perl script (thanks Wernfried)
I did it by making minor syntax edits to the the SQLite file. If someone wants to be able to do this periodically, I could make a script to build it from exiftool, as Wernfried did.
It's 12.1 MB, so it is not suitable as an attachment to this messages.
If anyone wants it, I can mail you a copy.
I just find working with MySQL/MariaDB is much easier than with SQLite.