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| author | Mike Bayer <mike_mp@zzzcomputing.com> | 2022-11-17 12:03:46 -0500 |
|---|---|---|
| committer | Mike Bayer <mike_mp@zzzcomputing.com> | 2022-11-30 18:04:08 -0500 |
| commit | de68627dd1ba9c2dd44bb3d11be1a3945b285205 (patch) | |
| tree | 0f80ae8fb55c5363fafd4fef48a728165b3e746e /lib/sqlalchemy/dialects/postgresql/base.py | |
| parent | 1057b47bca2522e45d9621a709d033aa4fb88888 (diff) | |
| download | sqlalchemy-de68627dd1ba9c2dd44bb3d11be1a3945b285205.tar.gz | |
add new pattern for single inh column override
Added a new parameter :paramref:`_orm.mapped_column.use_existing_column` to
accommodate the use case of a single-table inheritance mapping that uses
the pattern of more than one subclass indicating the same column to take
place on the superclass. This pattern was previously possible by using
:func:`_orm.declared_attr` in conjunction with locating the existing column
in the ``.__table__`` of the superclass, however is now updated to work
with :func:`_orm.mapped_column` as well as with pep-484 typing, in a
simple and succinct way.
Fixes: #8822
Change-Id: I2296a4a775da976c642c86567852cdc792610eaf
Diffstat (limited to 'lib/sqlalchemy/dialects/postgresql/base.py')
0 files changed, 0 insertions, 0 deletions