[Sqlalchemy-tickets] Issue #3368: symbol('NOT_SET') being used in a query (zzzeek/sqlalchemy)

[Christophe B. <iss...@bi...>]

New issue 3368: symbol('NOT_SET') being used in a query
https://bitbucket.org/zzzeek/sqlalchemy/issue/3368/symbol-not_set-being-used-in-a-query

Christophe Biocca:

Relation without Foreign Key, when lazyloading (immediately after a `session.flush()`), tries to use `symbol('NOT_SET')` in a query.

I've attached a simple script that reproduces the problem on postgres, although I don't believe it to be backend specific.

Only happens on 1.0.0, earlier versions aren't affected.