Lazy loading of columns in sqlalchemy

Question

Is it possible in sqlalchemy to lazy load a column? I have large BLOB column that I'm usually using but in some cases I don't want to load this specific column (while I'd like to have ORM object). Is it possible without adding separate table?

Adam · Accepted Answer · 2019-02-09 14:07:55Z

21

class Book(Base):
    __tablename__ = 'books'

    book_id = Column(Integer, primary_key=True)
    title = Column(String(200), nullable=False)
    summary = Column(String(2000))
    excerpt = deferred(Column(Text))
    photo = deferred(Column(Binary))

Deferred Column Loading

edited Feb 9, 2019 at 14:07

Adam

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answered Jun 3, 2011 at 11:19

ba__friend

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