[Sqlalchemy-commits] commit/sqlalchemy: zzzeek: Add _extend_on deduplicating set for metadata.reflect()

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1 new commit in sqlalchemy:

https://bitbucket.org/zzzeek/sqlalchemy/commits/55ad10370f9e/
Changeset:   55ad10370f9e
Branch:      master
User:        zzzeek
Date:        2016-11-23 15:31:56+00:00
Summary:     Add _extend_on deduplicating set for metadata.reflect()

The "extend_existing" option of :class:`.Table` reflection would
cause indexes and constraints to be doubled up in the case that the parameter
were used with :meth:`.MetaData.reflect` (as the automap extension does)
due to tables being reflected both within the foreign key path as well
as directly.  A new de-duplicating set is passed through within the
:meth:`.MetaData.reflect` sequence to prevent double reflection in this
way.

Change-Id: Ibf6650c1e76a44ccbe15765fd79df2fa53d6bac7
Fixes: #3861

Affected #:  6 files

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

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