Actually that was a bit too early but I tracked the problem down to the many-to-many relationship. Parameters are only interpolated (e.g. %(param_1)s) for the primaryjoin to the secondary table. Is there a technique to force relationship() to interpolate a parameter between the 1st and 3rd table instead of using only table.column=table.column?
On Thu, Dec 5, 2013 at 10:58 AM, Adrian Schreyer <adrian.schre...@gmail.com>wrote: > Never mind, > > the problem was that I specified the clause in a secondaryjoin and not in > the primaryjoin of the relationship(). > > > On Thu, Dec 5, 2013 at 10:44 AM, Adrian <adrian.schre...@gmail.com> wrote: > >> Hi All, >> >> I have a few partitioned tables in my PostgreSQL database but I do not >> know yet how to make the ORM relationship() with partition >> constraint-exclusion<http://www.postgresql.org/docs/9.3/static/ddl-partitioning.html#DDL-PARTITIONING-CONSTRAINT-EXCLUSION> >> on >> the instance level. Constraint-exclusion does not work with joins and >> requires scalar values - the problem is that I would need to add an >> additional WHERE clause to the primaryjoin (which adds the partition key) >> if the relationship is accessed from the* instance level*, e.g. >> user.addresses. Is there a mechanism in relationship() to distinguish >> between class-based joins (User.addresses) and instance-level access? >> >> -- >> You received this message because you are subscribed to a topic in the >> Google Groups "sqlalchemy" group. >> To unsubscribe from this topic, visit >> https://groups.google.com/d/topic/sqlalchemy/ov-mYWA7XAM/unsubscribe. >> To unsubscribe from this group and all its topics, send an email to >> sqlalchemy+unsubscr...@googlegroups.com. >> To post to this group, send email to sqlalchemy@googlegroups.com. >> Visit this group at http://groups.google.com/group/sqlalchemy. >> For more options, visit https://groups.google.com/groups/opt_out. >> > > -- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sqlalchemy+unsubscr...@googlegroups.com. To post to this group, send email to sqlalchemy@googlegroups.com. Visit this group at http://groups.google.com/group/sqlalchemy. For more options, visit https://groups.google.com/groups/opt_out.
