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Add doc note for multiple table mapping
authorMike Bayer <mike_mp@zzzcomputing.com>
Wed, 23 Oct 2019 15:18:56 +0000 (11:18 -0400)
committerMike Bayer <mike_mp@zzzcomputing.com>
Wed, 23 Oct 2019 15:18:56 +0000 (11:18 -0400)
commit2cae55269b6745bd733be142a6e199d8ecf9b50a
treee18680de052733fcec3ad87ad51b189537cf676ftree | snapshot
parentd76cb7213557c24609a1a75d8c391aea0179562acommit | diff
Add doc note for multiple table mapping

When mapping to a construct like OUTER JOIN, an UPDATE from the
ORM expects that all involved tables have a row already present;
document this as well as a potential workaround.

Fixes: #4927
Change-Id: Ie99f9f53cea33d9df2513f384a7c68676b197fb7
doc/build/orm/nonstandard_mappings.rst diff | blob | blame | history
Mirror of https://github.com/sqlalchemy/sqlalchemy.git