delta/python-packages/sqlalchemy.git/lib/sqlalchemy/sql/ddl.py, branch master

Avoid mutable object as default values

2021-08-24T20:08:11+00:00

Fixes: #6915
Closes: #6916
Pull-request: https://github.com/sqlalchemy/sqlalchemy/pull/6916
Pull-request-sha: 6ec484d3d14b7dd7053d10a5d550bd74eb524c8b

Change-Id: I2c87fbed44870110e35a69ee9a9e678671eeb8f0

Replace all http:// links to https://

2021-07-04T18:54:33+00:00

Also replace http://pypi.python.org/pypi with https://pypi.org/project

Change-Id: I84b5005c39969a82140706472989f2a30b0c7685

Fix error in documentation of DDLElement

2021-04-09T22:32:42+00:00

Change-Id: I9d850458c274d245057ea676d6730d4bd93c261f

Allow dropping a schema with a sequence shared by more than one table.

2021-03-19T23:01:56+00:00

Fixes: #6071
Change-Id: I5c4483abf075622cccb73cb4c4f8c873174b4e32

happy new year

2021-01-04T14:47:43+00:00

Change-Id: Ic5bb19ca8be3cb47c95a0d3315d84cb484bac47c

Emit deprecation warning for general DDLElement.bind argument

2020-12-14T16:51:07+00:00

Change-Id: I8ab1fd98340cb30aa43075508b3a0b9feffa290c

Merge "Support IF EXISTS/IF NOT EXISTS for DDL constructs"

2020-12-14T16:35:56+00:00

Support IF EXISTS/IF NOT EXISTS for DDL constructs

2020-12-14T15:19:21+00:00

Added parameters :paramref:`_ddl.CreateTable.if_not_exists`,
:paramref:`_ddl.CreateIndex.if_not_exists`,
:paramref:`_ddl.DropTable.if_exists` and
:paramref:`_ddl.DropIndex.if_exists` to the :class:`_ddl.CreateTable`,
:class:`_ddl.DropTable`, :class:`_ddl.CreateIndex` and
:class:`_ddl.DropIndex` constructs which result in "IF NOT EXISTS" / "IF
EXISTS" DDL being added to the CREATE/DROP. These phrases are not accepted
by all databases and the operation will fail on a database that does not
support it as there is no similarly compatible fallback within the scope of
a single DDL statement.  Pull request courtesy Ramon Williams.

Fixes: #2843
Closes: #5663
Pull-request: https://github.com/sqlalchemy/sqlalchemy/pull/5663
Pull-request-sha: 748b8472345d96efb446e2a444fbe020b313669f

Change-Id: I6a2b1f697993ed49c31584f0a31887fb0a868ed3

Send deterministic ordering into unit of work topological

2020-12-12T00:19:17+00:00

Improved the unit of work topological sorting system such that the
toplogical sort is now deterministic based on the sorting of the input set,
which itself is now sorted at the level of mappers, so that the same inputs
of affected mappers should produce the same output every time, among
mappers / tables that don't have any dependency on each other. This further
reduces the chance of deadlocks as can be observed in a flush that UPDATEs
among multiple, unrelated tables such that row locks are generated.

topological.sort() has been made "deterministic" in all cases by
using a separate list + set.

Fixes: #5735
Change-Id: I073103df414dba549e46605b394f8ccae6e80d0e

Allow dialect-specific stringification

2020-11-08T17:45:34+00:00

Dialect-specific constructs such as
:meth:`_postgresql.Insert.on_conflict_do_update` can now stringify in-place
without the need to specify an explicit dialect object.  The constructs,
when called upon for ``str()``, ``print()``, etc. now have internal
direction to call upon their appropriate dialect rather than the
"default"dialect which doesn't know how to stringify these.   The approach
is also adapted to generic schema-level create/drop such as
:class:`_schema.AddConstraint`, which will adapt its stringify dialect to
one indicated by the element within it, such as the
:class:`_postgresql.ExcludeConstraint` object.

mostly towards being able to provide doctest-style
examples for "on conflict" constructs using print statements.

Change-Id: I4b855516fe6dee2df77744c1bb21a373d7fbab93