[Sqlalchemy-commits] commit/sqlalchemy: zzzeek: Ensure mapper.polymorphic_on is polymorphic_prop.columns[0]

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1 new commit in sqlalchemy:

https://bitbucket.org/zzzeek/sqlalchemy/commits/3202fb4eabd7/
Changeset:   3202fb4eabd7
Branch:      rel_1_0
User:        zzzeek
Date:        2016-09-21 21:58:32+00:00
Summary:     Ensure mapper.polymorphic_on is polymorphic_prop.columns[0]

Fixed bug where joined eager loading would fail for a polymorphically-
loaded mapper, where the polymorphic_on was set to an un-mapped
expression such as a CASE expression.

Change-Id: Iffe68196aaac592165c89684f09f4c06cd78ce54
Fixes: #3800
(cherry picked from commit 97b294093617eca7298a2fe97bd23bd6dc3b59bf)

Affected #:  3 files

Repository URL: https://bitbucket.org/zzzeek/sqlalchemy/

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