Is there a reason you can't use subquery eager loading? That will at least use
an inner join, but its true when sqla does an auto join from one entity to
another, and the other is itself a join, it needs to parenthesize the target.
And not every database historically has supported that so at
using python 2.7, sqla 0.7.9, postgresql 9.1
i'm trying to eager load a relationship to a polymorphic target (the target
uses joined table inheritance).
here is example:
http://pastebin.com/xSiHS4QW
and this is output:
SELECT
...
FROM container
LEFT OUTER JOIN root AS root_
