feat: enable SQLAlchemy 2.0's insertmany feature #721
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- Enable the use_insertmanyvalues flag on the dialect to support SQLAlchemy 2.0's insertmany feature, which allows multiple ORM objects to be inserted together in bulk, even if the table has server-side generated values which must be included in a THEN RETURN clause - Provide an example for using the feature with client-side supplied UUIDs and insert_sentinel columns. - Ensure that the feature is not enables for bit-reversed primary keys. In other dialects, an incrementing primary key can be used rather than a sentinel column. In Spanner, the bit-reversed integers do not meet the ordering requirement to be used as implicit sentinels https://docs.sqlalchemy.org/en/20/core/internals.html#sqlalchemy.engine.default.DefaultDialect.use_insertmanyvalues https://docs.sqlalchemy.org/en/20/core/connections.html#insert-many-values-behavior-for-insert-statements https://docs.sqlalchemy.org/en/20/core/connections.html#configuring-sentinel-columns Fixes: googleapis#720
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Aug 18, 2025
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https://docs.sqlalchemy.org/en/20/core/internals.html#sqlalchemy.engine.default.DefaultDialect.use_insertmanyvalues
https://docs.sqlalchemy.org/en/20/core/connections.html#insert-many-values-behavior-for-insert-statements
https://docs.sqlalchemy.org/en/20/core/connections.html#configuring-sentinel-columns
Fixes: #720