On Sep 18, 2008, at 8:06 AM, Bruce Smith wrote: > Hello > > I have Oracle Express Release 10.2.0.1.0, SQLAlchemy 0.4.5, Python > 2.5.2 on Ubuntu x86 8.04. > > When I go through the ORM tutorial at > http://www.sqlalchemy.org/docs/04/ormtutorial.html > it fails at the first query below the heading Saving Objects with > an Oracle ORA-01400 error as follows: > > sqlalchemy.exceptions.DatabaseError: (DatabaseError) ORA-01400: > cannot insert NULL into ("BRUCE"."USERS"."ID") > 'INSERT INTO users (id, name, fullname, password) VALUES > (:id, :name, :fullname, :password)' {'fullname': 'Ed Jones', > 'password': 'edspassword', 'name': 'ed', 'id': None} > > My create_engine string was > engine = sa.create_engine('oracle://bruce:[EMAIL PROTECTED]', echo=True) > > The superficial reason for the error is obvious. Is this an Oracle > eccentricity? Is there a workaround?
With Oracle, SQLA needs you to supply a Sequence for each column which you'd like to have "autoincrementing" behavior - the tutorial assumes all primary key columns are autoincrementing. SQLA will issue the CREATE SEQUENCE for you upon table.create(), but you need to just give it a name (the Oracle crowd, in my experience, appreciates no names of anything being guessed): Column('id', Integer, Sequence('mytable_id_seq'), primary_key=True) --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to sqlalchemy@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en -~----------~----~----~----~------~----~------~--~---