Skip to content

Binary type is not supported when using Sqlalchemy #287

Open
@pan-x-c

Description

@pan-x-c

Environment:

  • Python: 3.10
  • pyodps: 0.12.3
  • sqlalchemy: 2.0.41

Script:

from odps import ODPS
from odps import options

from sqlalchemy import create_engine
from sqlalchemy import Column, Integer, String, LargeBinary
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker


def test_odps_with_sqlalchemy():

    options.sql.use_odps2_extension = True

    connection_string = ("odps://{access_id}:{access_key}@{project}?endpoint={endpoint}").format(
        access_id=ACCESS_KEY_ID,
        access_key=ACCESS_KEY_SECRET,
        project=PROJECT,
        endpoint=ENDPOINT,
    )
    engine = create_engine(connection_string)
    Base = declarative_base()

    class User(Base):
        __tablename__ = 'test_odps_table'
        id = Column(Integer, primary_key=True)
        name = Column(String)
        pickle = Column(LargeBinary)

    Base.metadata.create_all(engine)

    Session = sessionmaker(bind=engine)
    session = Session()

    sample_data = [
        User(name='Alice', pickle=b'pickle_data_alice'),
        User(name='Bob', pickle=b'pickle_data_bob'),
        User(name='Charlie', pickle=b'pickle_data_charlie')
    ]
    session.add_all(sample_data)
    session.commit()

    result = session.query(User).filter_by(name='Bob').first()
    return result

if __name__ == "__main__":
    test_odps_with_sqlalchemy()

Error Log:

sqlalchemy.exc.StatementError: (builtins.AttributeError) module 'odps.dbapi' has no attribute 'Binary'
[SQL: INSERT INTO test_odps_table (name, pickle) VALUES (:name, :pickle)]
[parameters: [{'name': 'Alice', 'pickle': b'pickle_data_alice'}]]

Metadata

Metadata

Assignees

No one assigned

    Labels

    No labels
    No labels

    Type

    No type

    Projects

    No projects

    Milestone

    No milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions