python - SQLAlchemy group_by return object with aggregated values -


let's consider have such schema:

class owner(db.model):     __tablename__ = 'owners'      id = db.column(db.integer, nullable=false, primary_key=true, autoincrement=true)     name = db.column(db.unicode(30), nullable=false)      shares = db.relationship('share', secondary=lambda: shares_owners, lazy="dynamic")  class share(db.model):     __tablename__ = 'shares'      id = db.column(db.integer, nullable=false, primary_key=true, autoincrement=true)     apartment = db.column(db.integer, nullable=false)     value = db.column(db.integer, nullable=false)      owners = db.relationship('owner', secondary=lambda: shares_owners, lazy="dynamic")  shares_owners = db.table('shares_owners',     db.column('share_id', db.integer, db.foreignkey('shares.id')),     db.column('owner_id', db.integer, db.foreignkey('owners.id')) ) 

filtering shares owned owner piece of cake:

share.query.join(shares_owners, owner, user).filter(user.id == 1).all() 

you can group , sum values func.sum when sqlalchemy returns summed field.

is there way force return share object (or based on share) summed value?

ideally call .summed() method instead of .one(), .first() or .all() return share object summed values.


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