(wow, way to go tab key! Sorry, folks)
I'm having a bit of trouble and I think it may be a deficiency in my
understanding of SqlAlchemy.
Let's say I have:
Table(Apples)
Table(Crates)
apples_by_crate = \
select([ crate_table.c.id.label("crate_id"),
apple_table.c.id.label("apple_id"),
],
from_obj = <long list of tables and conditions here>)
apples_by_crate_a = apples_by_crate.correlate(None).alias('_apples_by_crate')
mapper(Crates,
'apples':relation(Apples, viewonly=True,
secondary=apples_by_crate,
primaryjoin= apple_table.c.id
== apples_by_crate_a.c.apple_id,
secondaryjoin=
apples_by_crate_a.c.crate_id == crate_table.c.id,
foreignkeys= [
apples_by_crate_a.c.apple_id, crate_table.c.id ]))
This works fine...until I try to eagerload apples. Bad Things Happen.
If it's a confounding factor, know that
apples_by_crate contains another subquery that also has a column "crate_id".
My impression right now is that I need to .use_labels for my
subqueries so I don't have conflicting names, but I'm starting to
wonder if I'm just doing it wrong.
Any advice?
Alan
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