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| author | Gord Thompson <gord@gordthompson.com> | 2020-08-21 10:29:29 -0600 |
|---|---|---|
| committer | Mike Bayer <mike_mp@zzzcomputing.com> | 2020-08-28 16:32:05 -0400 |
| commit | dc91c7db7ff32243cd2f6fc04f4e3a6d62f7b11b (patch) | |
| tree | 64841da523c61fcf389110bf433d07b2f02987f6 /lib/sqlalchemy/testing/__init__.py | |
| parent | 5bc2532bf509307cc96b4d6233dc64104e3ce105 (diff) | |
| download | sqlalchemy-dc91c7db7ff32243cd2f6fc04f4e3a6d62f7b11b.tar.gz | |
Emit v2.0 deprecation warning for "implicit autocommit"
"Implicit autocommit", which is the COMMIT that occurs when a DML or DDL
statement is emitted on a connection, is deprecated and won't be part of
SQLAlchemy 2.0. A 2.0-style warning is emitted when autocommit takes
effect, so that the calling code may be adjusted to use an explicit
transaction.
As part of this change, DDL methods such as
:meth:`_schema.MetaData.create_all` when used against a
:class:`_engine.Engine` or :class:`_engine.Connection` will run the
operation in a BEGIN block if one is not started already.
The MySQL and MariaDB dialects now query from the information_schema.tables
system view in order to determine if a particular table exists or not.
Previously, the "DESCRIBE" command was used with an exception catch to
detect non-existent, which would have the undesirable effect of emitting a
ROLLBACK on the connection. There appeared to be legacy encoding issues
which prevented the use of "SHOW TABLES", for this, but as MySQL support is
now at 5.0.2 or above due to :ticket:`4189`, the information_schema tables
are now available in all cases.
Fixes: #4846
Change-Id: I733a7e0e17477a63607fb9931c87c393bbd7ac57
Diffstat (limited to 'lib/sqlalchemy/testing/__init__.py')
| -rw-r--r-- | lib/sqlalchemy/testing/__init__.py | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/sqlalchemy/testing/__init__.py b/lib/sqlalchemy/testing/__init__.py index 9b1164874..45cc7ea2a 100644 --- a/lib/sqlalchemy/testing/__init__.py +++ b/lib/sqlalchemy/testing/__init__.py @@ -55,6 +55,7 @@ from .exclusions import only_if # noqa from .exclusions import only_on # noqa from .exclusions import skip # noqa from .exclusions import skip_if # noqa +from .schema import eq_type_affinity # noqa from .util import adict # noqa from .util import fail # noqa from .util import flag_combinations # noqa |