An example of how to define a column with core could be:

I’ve retrieved instance by orm and changes it’s field. But I wonder, how to insert updates in new session. I’d like to save updated instance of table row

I am new to sqlalchemy and I have defined a schema using orm for a chat application, but I am having issues with the schema’s relationships, this is what the models are right now, I want some help in how these would be done properly