Dev: how to log DML SQL queries

Read (DQL) SQL queries are logged just fine when changing the following env vars:

      VIKUNJA_LOG_DATABASE: stdout
      VIKUNJA_LOG_DATABASELEVEL: INFO

But how do I also log DML queries (UPDATE/DELETE/INSERT)?
Maybe there’s also a way to additionally log what service has originated them?

They should be visible when you set the log level to debug.