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to simplify pyproject.toml change the remaining files
that aren't going to be typed on this first pass
(unless of course someone wants to type some of these)
to include # mypy: ignore-errors. for the moment, only a handful
of ORM modules are to have more type checking implemented.
It's important that ignore-errors is used and
not "# type: ignore", as in the latter case, mypy doesn't even
read the existing types in the file, which makes it impossible to
type any files that refer to those modules at all.
to simplify ongoing typing work use inline mypy config
for remaining files that are "done" for now, indicating the
level of type checking they currently have.
Change-Id: I98669c1a305c2f0adba85d10b5425541f3fe9533
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Reorganized the list of reserved words into two separate lists, one for
MySQL and one for MariaDB, so that these diverging sets of words can be
managed more accurately; adjusted the MySQL/MariaDB dialect to switch among
these lists based on either explicitly configured or
server-version-detected "MySQL" or "MariaDB" backend. Added all current
reserved words through MySQL 8 and current MariaDB versions including
recently added keywords like "lead" . Pull request courtesy Kevin Kirsche.
1. Move reserved words to it's own file.
2. Add missing reserved words from https://mariadb.com/kb/en/reserved-words/
* Note: this only adds MariaDB though links to MySQL, it also does not
include the reserved words for Oracle mode, as listed in the link.
Fixes: #7167
Supercedes: #7197
Closes: #7207
Pull-request: https://github.com/sqlalchemy/sqlalchemy/pull/7207
Pull-request-sha: 5a682e331069520ccad9e6bf3cc5e4a77a889ef0
Change-Id: Ib25be8148568899f56b5c9b42d4f530ade8a04e3
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Added a new flag to the :class:`_engine.Dialect` class called
:attr:`_engine.Dialect.supports_statement_cache`. This flag now needs to be present
directly on a dialect class in order for SQLAlchemy's
:ref:`query cache <sql_caching>` to take effect for that dialect. The
rationale is based on discovered issues such as :ticket:`6173` revealing
that dialects which hardcode literal values from the compiled statement,
often the numerical parameters used for LIMIT / OFFSET, will not be
compatible with caching until these dialects are revised to use the
parameters present in the statement only. For third party dialects where
this flag is not applied, the SQL logging will show the message "dialect
does not support caching", indicating the dialect should seek to apply this
flag once they have verified that no per-statement literal values are being
rendered within the compilation phase.
Fixes: #6184
Change-Id: I6fd5b5d94200458d4cb0e14f2f556dbc25e27e22
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It's better, the majority of these changes look more readable to me.
also found some docstrings that had formatting / quoting issues.
Change-Id: I582a45fde3a5648b2f36bab96bad56881321899b
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MySQL dialect's server_version_info tuple is now all numeric. String
tokens like "MariaDB" are no longer present so that numeric comparison
works in all cases. The .is_mariadb flag on the dialect should be
consulted for whether or not mariadb was detected. Additionally removed
structures meant to support extremely old MySQL versions 3.x and 4.x;
the minimum MySQL version supported is now version 5.0.2.
In addition, as the "MariaDB" name goes away from server version,
expand upon the change in I330815ebe572b6a9818377da56621397335fa702
to support the name "mariadb" throughout the dialect and test suite
when mariadb-only mode is used. This changes the "name" field
on the MariaDB dialect to "mariadb", which then implies a change
throughout the testing requirements system as well as all the
dialect-specific DDL argument names such as "mysql_engine" is
now specified as "mariadb_engine", etc. Make use of the
recent additions to test suite URL provisioning so that we can
force MariaDB databases to have a "mariadb-only" dialect which
allows us to test this name change fully.
Update documentation to refer to MySQL / MariaDB explicitly
as well as indicating the "mariadb_" prefix used for options.
It seems likely that MySQL and MariaDB version numbers are going to
start colliding at some point so having the "mariadb" name
be available as a totally separate dialect name should give us
some options in this regard.
Currently also includes a date related fix to a test for
the postgresql dialect that was implicitly assuming a
non-UTC timezone
Fixes: #4189
Change-Id: I00e76d00f62971e1f067bd61915fa6cc1cf64e5e
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The ``importlib_metadata`` library is used to scan for setuptools
entrypoints rather than pkg_resources. as importlib_metadata is a small
library that is included as of Python 3.8, the compatibility library is
installed as a dependency for Python versions older than 3.8.
Unfortunately setuptools "attr:" is broken because it tries to import
the module; seems like this is fixed as part of
https://github.com/pypa/setuptools/pull/1753 however this is too recent
to rely upon for now.
Added a new dialect token "mariadb" that may be used in place of "mysql" in
the :func:`_sa.create_engine` URL. This will deliver a MariaDB dialect
subclass of the MySQLDialect in use that forces the "is_mariadb" flag to
True. The dialect will raise an error if a server version string that does
not indicate MariaDB in use is received. This is useful for
MariaDB-specific testing scenarios as well as to support applications that
are hardcoding to MariaDB-only concepts. As MariaDB and MySQL featuresets
and usage patterns continue to diverge, this pattern may become more
prominent.
Fixes: #5400
Fixes: #5496
Change-Id: I330815ebe572b6a9818377da56621397335fa702
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