How to define a table without primary key with SQLAlchemy?

Question

I have a table that does not have a primary key. And I really do not want to apply this constraint to this table.

In SQLAlchemy, I defined the

Answer 1

Disclaimer: Oracle only

Oracle databases secretly store something called rowid to uniquely define each record in a table, even if the table doesn't have a primary key. I solved my lack of primary key problem (which I did not cause!) by constructing my ORM object like:

class MyTable(Base)
    __tablename__ = 'stupid_poorly_designed_table'
    
    rowid = Column(String, primary_key=True)
    column_a = Column(String)
    column_b = Column(String)
    ...

You can see what rowid actually looks like (it's a hex value I believe) by running

SELECT rowid FROM stupid_poorly_designed_table
GO