So first I have to create all (for example 50 columns and define them in data type) and then import? That is not the case with any other db.
I tested as you said, first to create 3x columns, import and it went well (att. example 1). Please see the screenshot.
BTW, how can I bulk import many columns? Is it possible via SQL query or another way is better?
Sorry for the wrong mailing list and the "bug classification" but I am new in PostgreSQL and want it to connect to an app.