[sql] [bug] [regression] Fixed critical regression in SQL expression formulation in the 2.0 series
due to #7744 which improved support for SQL expressions that
contained many elements against the same operator repeatedly; parenthesis
grouping would be lost with expression elements beyond the first two
elements.
[orm] [usecase] Added new event hook _orm.MapperEvents.after_mapper_constructed(),
which supplies an event hook to take place right as the
_orm.Mapper object has been fully constructed, but before the
_orm.registry.configure() call has been called. This allows code that
can create additional mappings and table structures based on the initial
configuration of a _orm.Mapper, which also integrates within
Declarative configuration. Previously, when using Declarative, where the
_orm.Mapper object is created within the class creation process,
there was no documented means of running code at this point. The change
is to immediately benefit custom mapping schemes such as that
of the examples_versioned_history example, which generate additional
mappers and tables in response to the creation of mapped classes.
[orm] [usecase] The infrequently used _orm.Mapper.iterate_properties attribute and
_orm.Mapper.get_property() method, which are primarily used
internally, no longer implicitly invoke the _orm.registry.configure()
process. Public access to these methods is extremely rare and the only
benefit to having _orm.registry.configure() would have been allowing
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Bumps sqlalchemy from 1.4.39 to 2.0.3.
Release notes
Sourced from sqlalchemy's releases.
... (truncated)
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