Hello, excellent workbench.
First I write the doubts. I haven't found the operators like, between, maybe they aren't developed yet.
On the other hand, it would be interesting to be able to connect the resulting reports to tables of a database, so that when you have a report ready, you can send the results to a mariadb or postgresql database with an export wizard. Also, if something changes in the database, freecad could read that new value and recreate the model.
Thank you very much and again congratulations for this great work.