[orm] [bug] Modified the JoinedLoader implementation to use a simpler approach in
one particular area where it previously used a cached structure that would
be shared among threads. The rationale is to avoid a potential race
condition which is suspected of being the cause of a particular crash
that's been reported multiple times. The cached structure in question is
still ultimately "cached" via the compiled SQL cache, so a performance
degradation is not anticipated.
[orm] [bug] [regression] Fixed regression where use of _dml.update() or _dml.delete()
within a _sql.CTE construct, then used in a _sql.select(),
would raise a CompileError as a result of ORM related rules for
performing ORM-level update/delete statements.
[orm] [bug] Fixed issue in new ORM Annotated Declarative where using a
_schema.ForeignKey (or other column-level constraint) inside of
_orm.mapped_column() which is then copied out to models via pep-593
Annotated would apply duplicates of each constraint to the
_schema.Column as produced in the target _schema.Table,
leading to incorrect CREATE TABLE DDL as well as migration directives under
Alembic.
[orm] [bug] Fixed issue where using additional relationship criteria with the
_orm.joinedload() loader option, where the additional criteria itself
contained correlated subqueries that referred to the joined entities and
therefore also required "adaption" to aliased entities, would be excluded
from this adaption, producing the wrong ON clause for the joinedload.
[sql] [usecase] Generalized the MSSQL _sql.try_cast() function into the
sqlalchemy. import namespace so that it may be implemented by third
party dialects as well. Within SQLAlchemy, the _sql.try_cast()
function remains a SQL Server-only construct that will raise
CompileError if used with backends that don't support it.
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Bumps sqlalchemy from 1.4.46 to 2.0.14.
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Sourced from sqlalchemy's releases.
... (truncated)
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