sqlalchemy's create_all doesn't create sequences automatically

Question

I am using SQLAlchemy 0.4.8 with Postgres in order to manage my datastore. Until now, it's been fairly easy to automatically deploy my database: I was using metadata.create_all(bind=engine) and everything worked just fine. But now I am trying to create a sequence that it's not being used by any table, so create_all() doesn't create it, even though it's define correctly: Sequence('my_seq', metadata=myMetadata).

Any thoughts on how I could make this work ?

P.S. And it's not possible at the moment to upgrade to a newer version of SQLAlchemy.

Answer 1

Could you call the create it by using its own Sequence.create method:

my_seq = Sequence('my_seq', metadata=myMetadata)
# ...
metadata.create_all(bind=engine)
# @note: create unused objects explicitly
my_seq.create(bind=engine)
# ...