Not sure if this matters, but the model doesn't have an autoincrement primary key:
class ExchangeRate(Base): currency_from = Column(CURRENCY_ISO_CODE_TYPE, primary_key=True) currency_to = Column(CURRENCY_ISO_CODE_TYPE, primary_key=True) ... created_at = Column(DateTime, nullable=False, server_default=func.now()) updated_at = Column(DateTime, nullable=False, server_default=func.now(), server_onupdate=func.now()) -- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sqlalchemy+unsubscr...@googlegroups.com. To post to this group, send email to sqlalchemy@googlegroups.com. Visit this group at http://groups.google.com/group/sqlalchemy. For more options, visit https://groups.google.com/groups/opt_out.