[Sqlalchemy-tickets] Issue #3394: deprecate order_by parameter on mapper (zzzeek/sqlalchemy)

[Mike B. <iss...@bi...>]

New issue 3394: deprecate order_by parameter on mapper
https://bitbucket.org/zzzeek/sqlalchemy/issue/3394/deprecate-order_by-parameter-on-mapper

Mike Bayer:

This is a little used parameter with very little impact on current code, however as per #3223 there are edge cases that are not worth supporting.   Deprecation here would likely be indefinite but new or currently unworking use cases would remain unsupported.