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| author | Mike Bayer <mike_mp@zzzcomputing.com> | 2022-12-08 19:31:37 -0500 |
|---|---|---|
| committer | Mike Bayer <mike_mp@zzzcomputing.com> | 2022-12-15 12:59:35 -0500 |
| commit | 8e4e325319eaadb81cc1b6e8c8db7cc1a6b920bd (patch) | |
| tree | 848d4716a1388e22e19314bf29d0acf1efc83038 /lib/sqlalchemy/dialects/mssql/base.py | |
| parent | e0eea374c2df82f879d69b99ba2230c743bbae27 (diff) | |
| download | sqlalchemy-8e4e325319eaadb81cc1b6e8c8db7cc1a6b920bd.tar.gz | |
add eager_defaults="auto" for inserts
Added a new default value for the :paramref:`.Mapper.eager_defaults`
parameter "auto", which will automatically fetch table default values
during a unit of work flush, if the dialect supports RETURNING for the
INSERT being run, as well as
:ref:`insertmanyvalues <engine_insertmanyvalues>` available. Eager fetches
for server-side UPDATE defaults, which are very uncommon, continue to only
take place if :paramref:`.Mapper.eager_defaults` is set to ``True``, as
there is no batch-RETURNING form for UPDATE statements.
Fixes: #8889
Change-Id: I84b91092a37c4cd216e060513acde3eb0298abe9
Diffstat (limited to 'lib/sqlalchemy/dialects/mssql/base.py')
| -rw-r--r-- | lib/sqlalchemy/dialects/mssql/base.py | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/sqlalchemy/dialects/mssql/base.py b/lib/sqlalchemy/dialects/mssql/base.py index a0049c361..aa640727f 100644 --- a/lib/sqlalchemy/dialects/mssql/base.py +++ b/lib/sqlalchemy/dialects/mssql/base.py @@ -232,6 +232,7 @@ integer values in Python 3), use :class:`_types.TypeDecorator` as follows:: ) name = Column(String) +.. _mssql_insert_behavior: INSERT behavior ^^^^^^^^^^^^^^^^ |