delta/python-packages/sqlalchemy.git/lib/sqlalchemy/orm/query.py, branch pr/263

Rename Query._mapper_zero() to Query._entity_zero()

2016-04-19T19:53:50+00:00

To be more descriptive of the use of _mapper_zero(), rename
it to _entity_zero(), but also supply a new _mapper_zero() function
that more strictly returns a mapper.  The existing
_entity_zero() function is renamed to _query_entity_zero.
_only_mapper_zero() is removed as it isn't used.  Divide up the
existing calling functions to refer to the appropriate new method.

Change-Id: I8780c3235e87b4936c6daf64d9d299b22b6e1260
Fixes: #3608

- Added support for rendering "FULL OUTER JOIN" to both Core and ORM.

2016-03-28T15:50:09+00:00

Pull request courtesy Stefan Urbanek.  fixes #1957

Adds documentation to Query.slice().

2016-03-13T20:37:55+00:00

- An improvement to the workings of :meth:`.Query.correlate` such

2016-02-26T04:27:49+00:00

that when a "polymorphic" entity is used which represents a straight
join of several tables, the statement will ensure that all the
tables within the join are part of what's correlating.
fixes #3662

- CTE functionality has been expanded to support all DML, allowing

2016-02-11T17:27:28+00:00

INSERT, UPDATE, and DELETE statements to both specify their own
WITH clause, as well as for these statements themselves to be
CTE expressions when they include a RETURNING clause.
fixes #2551

- A refinement to the logic which adds columns to the resulting SQL when

2016-02-09T22:49:38+00:00

:meth:`.Query.distinct` is combined with :meth:`.Query.order_by` such
that columns which are already present will not be added
a second time, even if they are labeled with a different name.
Regardless of this change, the extra columns added to the SQL have
never been returned in the final result, so this change only impacts
the string form of the statement as well as its behavior when used in
a Core execution context.   Additionally, columns are no longer added
when the DISTINCT ON format is used, provided the query is not
wrapped inside a subquery due to joined eager loading.
fixes #3641

- happy new year

2016-01-29T16:20:22+00:00

- The ``str()`` call for :class:`.Query` will now take into account

2016-01-19T17:44:42+00:00

the :class:`.Engine` to which the :class:`.Session` is bound, when
generating the string form of the SQL, so that the actual SQL
that would be emitted to the database is shown, if possible.  Previously,
only the engine associated with the :class:`.MetaData` to which the
mappings are associated would be used, if present.  If
no bind can be located either on the :class:`.Session` or on
the :class:`.MetaData` to which the mappings are associated, then
the "default" dialect is used to render the SQL, as was the case
previously.  fixes #3081

- Fixed bug where use of the :meth:`.Query.select_from` method would

2015-12-13T02:08:56+00:00

cause a subsequent call to the :meth:`.Query.with_parent` method to
fail. fixes #3606
- add mark-as-fail test for #3607

- write a real inline documentation section for from_self(),

2015-12-07T17:36:36+00:00

building on the example of query.join().  Ideally all the methods
in Query would have this kind of thing.  fixes #3544