On Jan 23, 2012, at 8:25 AM, Robert Forkel wrote:
> hi,
> just ran into the following problem: When creating tables (for oracle)
> with a primary key fetched from a sequence, the create statement for
> the sequence is issued twice; i.e. the following code
>
> from sqlalchemy import MetaData, create_engine, Table, Column,
> Integer, Sequence
> from sqlalchemy.schema import DDL
>
> def dump(sql, *multiparams, **params):
> print sql.compile(dialect=engine.dialect)
> engine = create_engine('oracle://', strategy='mock', executor=dump)
>
> metadata = MetaData()
> metadata.bind = engine
>
> t = Table('testtable', metadata,
> Column('pk', Integer, Sequence('testtable_pk_seq',
> schema='schemaname'), primary_key=True),
> schema='schemaname'
> )
> t.create()
this is a fairly serious issue captured in
http://www.sqlalchemy.org/trac/ticket/2384 , for now a workaround is to say:
metadata.create_all(tables=[t])
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