On Oct 19, 2013, at 11:17 PM, aephi...@gmail.com wrote:
Hi
SQLAlchemy 0.8.2, Win32,
Microsoft SQL Server ODBC Driver
Briefly...
class Uno(Base):
__tablename__ = 'UNO'
__table_args__ = {
'autoload':True,
'autoload_with':engine
}
duos =
at the moment a relationship() can't reliably be used as an expression in
query(), there's a ticket to enhance this functionality at
http://www.sqlalchemy.org/trac/ticket/2846. Based on what it seems like
the intent here is, I think you want:
session.query(Uno,
On Oct 20, 2013, at 7:00 PM, aephi...@gmail.com wrote:
I do, but it doesn't work:
NoForeignKeysError: Could not determine join condition between parent/child
tables on relationship Uno.duos - there are no foreign keys linking these
tables. Ensure that referencing columns are
it sounds like this is how your database was set up, or at least the
columns related to this foreign key.
It is.
then those names in upper case with the quoting needs to be used.
They don't. I can do select [DUO_duo] from [uno] and it works the same as
without quotes. Perhaps because I'm
I have a module that is imported by several Python scripts run by an
application
that fires up a new interpreter session for each invocation. When not under
load or
running the code manually at the cli things work fine but once the
concurrency
raises and the application starts seeing some load it
the MetaData object holds one Table object per unique name given. If you use
the Table constructor more than once with the same name and the same MetaData,
you get this error.
That's how the error is caused, then the fact that the error is occasional
points strongly to a race condition of
