(In other similar questions, the error number has been 168, in my case it's zero.)
This occurs on attempting to load a massive view (which itself is a select query on another view). Many JOINS are involved. So I'm wondering if I can see somewhere what limit may have been reached, and whether I can raise it temporarily, or if the only choice is to rethink the DB structure.
There nothing relevant in /var/log/mysql/error.log - is there other logging I could enable?
Version info: Ver 15.1 Distrib 10.5.12-MariaDB, for debian-linux-gnu (x86_64)