querying and selecting specific column in SQLAlchemy

Question

How do I select specific columns from a query. For example, just the User name and size of a photo from:

class User(Base):
    __tablename__ = \'user\'
    u         


        

Answer 1

Specify what you want returned in .query(). The first mapped column indicates the base table to query from.

session.query(User.real_name, Photo.size).join(User.photos).all()

This will get you a list of tuples like [('name', 12)] for every photo.

Please consider searching the documentation briefly. It's author is very thorough.