sqlalchemy and auto increments with postgresql

Question

I created a table with a primary key and a sequence but via the debug ad later looking at the table design, the sequence isn\'t applied, just created.

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Answer 1

I realize this is an old thread, but I stumbled on it with the same problem and were unable to find a solution anywhere else.

After some experimenting I was able to solve this with the following code:

TABLE_ID = Sequence('table_id_seq', start=1000)

class Table(Base):
    __tablename__ = 'table'

    id = Column(Integer, TABLE_ID, primary_key=True, server_default=TABLE_ID.next_value())

This way the sequence is created and is used as the default value for column id, with the same behavior as if created implicitly by SQLAlchemy.