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Bump sqlalchemy from 1.4.29 to 1.4.30 in /requirements

Guillaume Gay requested to merge dependabot/pip/requirements/sqlalchemy-1.4.30 into main

Created by: dependabot[bot]

Bumps sqlalchemy from 1.4.29 to 1.4.30.

Release notes

Sourced from sqlalchemy's releases.

1.4.30

Released: January 19, 2022

orm

  • [orm] [bug] Fixed issue in joined-inheritance load of additional attributes functionality in deep multi-level inheritance where an intermediary table that contained no columns would not be included in the tables joined, instead linking those tables to their primary key identifiers. While this works fine, it nonetheless in 1.4 began producing the cartesian product compiler warning. The logic has been changed so that these intermediary tables are included regardless. While this does include additional tables in the query that are not technically necessary, this only occurs for the highly unusual case of deep 3+ level inheritance with intermediary tables that have no non primary key columns, potential performance impact is therefore expected to be negligible.

    References: #7507

  • [orm] [bug] Fixed issue where calling upon _orm.registry.map_imperatively() more than once for the same class would produce an unexpected error, rather than an informative error that the target class is already mapped. This behavior differed from that of the _orm.mapper() function which does report an informative message already.

    References: #7579

  • [orm] [bug] [asyncio] Added missing method _asyncio.AsyncSession.invalidate() to the _asyncio.AsyncSession class.

    References: #7524

  • [orm] [bug] [regression] Fixed regression which appeared in 1.4.23 which could cause loader options to be mis-handled in some cases, in particular when using joined table inheritance in combination with the polymorphic_load="selectin" option as well as relationship lazy loading, leading to a TypeError.

    References: #7557

  • [orm] [bug] [regression] Fixed ORM regression where calling the _orm.aliased() function against an existing _orm.aliased() construct would fail to produce correct SQL if the existing construct were against a fixed table. The fix allows that the original _orm.aliased() construct is disregarded if it were only against a table that's now being replaced. It also allows for correct behavior when constructing a _orm.aliased() without a selectable argument against a _orm.aliased() that's against a subuquery, to create an alias of that subquery (i.e. to change its name).

... (truncated)

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