working version testsuite databases

[ghost]

Adding the hack zurich databse to let model train. Changes to also see the views from the table Changes to enable numeric keyword for sql queries

[delixfe]

With that change we would still need two databases?

• Postgres to Prepare & Preprocess Data
• SQLite for training / evaluation

[ghost]

@delixfe I think that the postgres database is never used here. Not in preprocessing nor in training. @ckosten please correct me if I am wrong.