Hi !
I am pretty new to elixir..
So.. how can i lock some rows while updating them.
I've tried to do:
session.begin()
upd = MyClass.query().with_lockmode("update").one()
upd.somenumber += 10
session.commit()
but not successful. calling to session.begin() raise:
sqlalchemy.exc.InvalidRequestError: A transaction is already begun.
Use subtransactions=True to allow subtransactions.
and doing only:
upd = MyClass.query().with_lockmode("update").one()
upd.somenumber += 10
session.commit()
he doesn't lock.
what am i doing wrong? :S
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