.. changelog::
:version: 1.3.19
- :include_notes_from: unreleased_13
+ :released: August 17, 2020
+
+ .. change::
+ :tags: usecase, py3k
+ :tickets: #5357
+
+ Added a ``**kw`` argument to the :meth:`.DeclarativeMeta.__init__` method.
+ This allows a class to support the :pep:`487` metaclass hook
+ ``__init_subclass__``. Pull request courtesy Ewen Gillies.
+
+
+ .. change::
+ :tags: bug, sql
+ :tickets: 5470
+
+ Repaired an issue where the "ORDER BY" clause rendering a label name rather
+ than a complete expression, which is particularly important for SQL Server,
+ would fail to occur if the expression were enclosed in a parenthesized
+ grouping in some cases. This case has been added to test support. The
+ change additionally adjusts the "automatically add ORDER BY columns when
+ DISTINCT is present" behavior of ORM query, deprecated in 1.4, to more
+ accurately detect column expressions that are already present.
+
+ .. change::
+ :tags: usecase, mysql
+ :tickets: 5481
+
+ The MySQL dialect will render FROM DUAL for a SELECT statement that has no
+ FROM clause but has a WHERE clause. This allows things like "SELECT 1 WHERE
+ EXISTS (subquery)" kinds of queries to be used as well as other use cases.
+
+
+ .. change::
+ :tags: bug, mssql, sql
+ :tickets: 5467
+
+ Fixed bug where the mssql dialect incorrectly escaped object names that
+ contained ']' character(s).
+
+ .. change::
+ :tags: bug, reflection, sqlite, mssql
+ :tickets: 5456
+
+ Applied a sweep through all included dialects to ensure names that contain
+ single or double quotes are properly escaped when querying system tables,
+ for all :class:`.Inspector` methods that accept object names as an argument
+ (e.g. table names, view names, etc). SQLite and MSSQL contained two
+ quoting issues that were repaired.
+
+ .. change::
+ :tags: bug, mysql
+ :tickets: 5411
+
+ Fixed an issue where CREATE TABLE statements were not specifying the
+ COLLATE keyword correctly.
+
+ .. change::
+ :tags: bug, datatypes, sql
+ :tickets: 4733
+
+ The ``LookupError`` message will now provide the user with up to four
+ possible values that a column is constrained to via the :class:`.Enum`.
+ Values longer than 11 characters will be truncated and replaced with
+ ellipses. Pull request courtesy Ramon Williams.
+
+ .. change::
+ :tags: bug, postgresql
+ :tickets: 5476
+
+ Fixed issue where the return type for the various RANGE comparison
+ operators would itself be the same RANGE type rather than BOOLEAN, which
+ would cause an undesirable result in the case that a
+ :class:`.TypeDecorator` that defined result-processing behavior were in
+ use. Pull request courtesy Jim Bosch.
+
+
+
+ .. change::
+ :tags: bug, mysql
+ :tickets: 5493
+
+ Added MariaDB code 1927 to the list of "disconnect" codes, as recent
+ MariaDB versions apparently use this code when the database server was
+ stopped.
+
+ .. change::
+ :tags: usecase, declarative, orm
+ :tickets: 5513
+
+ The name of the virtual column used when using the
+ :class:`_declarative.AbstractConcreteBase` and
+ :class:`_declarative.ConcreteBase` classes can now be customized, to allow
+ for models that have a column that is actually named ``type``. Pull
+ request courtesy Jesse-Bakker.
+
+ .. change::
+ :tags: usecase, orm
+ :tickets: 5494
+
+ Adjusted the workings of the :meth:`_orm.Mapper.all_orm_descriptors`
+ accessor to represent the attributes in the order that they are located in
+ a deterministic way, assuming the use of Python 3.6 or higher which
+ maintains the sorting order of class attributes based on how they were
+ declared. This sorting is not guaranteed to match the declared order of
+ attributes in all cases however; see the method documentation for the exact
+ scheme.
+
+
+
+ .. change::
+ :tags: bug, sql
+ :tickets: 5500
+
+ Fixed issue where the
+ :paramref:`_engine.Connection.execution_options.schema_translate_map`
+ feature would not take effect when the :meth:`_schema.Sequence.next_value`
+ function function for a :class:`_schema.Sequence` were used in the
+ :paramref:`_schema.Column.server_default` parameter and the create table
+ DDL were emitted.
.. changelog::
:version: 1.3.18
projects / thirdparty / sqlalchemy / sqlalchemy.git / commitdiff
