Mike Bayer e48bcb599b Integrate mapper-level version_id_col with versioned_history ...

as the versioned_history example supplies an integer version
counter for the purposes of generating an audit trail, this
counter is also suited to be used for optimistic concurrency
detection using the version_id_col feature.   Build upon
the test that was first added in ac54ba0f2d
to provide a flag and some basic documentation.

Fixes: #2861
Change-Id: I50236beae4c49b33ada8fdcc4c524273b4e21c75
(cherry picked from commit 48b37a062a)

2020-01-10 13:19:29 -05:00

..

__init__.py

Integrate mapper-level version_id_col with versioned_history

2020-01-10 13:19:29 -05:00

history_meta.py

Integrate mapper-level version_id_col with versioned_history

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test_versioning.py

Integrate mapper-level version_id_col with versioned_history

2020-01-10 13:19:29 -05:00