A .annotate().select_related() query resulted in misaligned rows vs
columns for compiler.resolve_columns() method.
Report & patch by Michael Manfre.
Backpatch of 83554b018e from master.
It's now forbidden to call queryset.update(field=instance) when instance
hasn't been saved to the database ie. instance.pk is None.
Conflicts:
tests/queries/tests.py
Backport of b4cd8169 from master.
The option can be used to force pre 1.6 style SELECT on save behaviour.
This is needed in case the database returns zero updated rows even if
there is a matching row in the DB. One such case is PostgreSQL update
trigger that returns NULL.
Reviewed by Tim Graham.
Refs #16649
Backport of e973ee6a98 from master
Conflicts:
django/db/models/options.py
tests/basic/tests.py
In cases where the same connection (from model A to model B along the
same field) was needed multiple times in a select_related query, the
join setup code mistakenly reused an existing join.
Backpatch of 8d65b6082c.
Conflicts:
django/db/models/sql/compiler.py
tests/queries/tests.py
The code that tests to see which LIKE expressions to use now runs
using non-error-wrapped cursor, so cx_Oracle exceptions need to be caught
rather than Django DatabaseErrors.
Thanks Trac user ludo for report and initial patch.
It has been possible to use models of wrong type in related field
lookups. For example pigs__in=[a_duck] has worked. Changes to
ForeignObject broke that.
It might be a good idea to restrict the model types usable in lookups.
This should be done intentionally, not accidentally and without any
consideration for deprecation path.
Backpatch of 7cca8d56d2 from master.
Add support for Oracle, fix an issue with the repr of RawQuerySet,
add tests and documentations. Also added a 'supports_paramstyle_pyformat'
database feature, True by default, False for SQLite.
Thanks Donald Stufft for review of documentation.
This is useful:
- to force a rollback on the exit of an atomic block without having to
raise and catch an exception;
- to prevent a rollback after handling an exception manually.
Those methods were only used by `contrib.admin` internally and exclusively
related to `contrib.auth`. Since they were undocumented but used
in the wild the raised deprecation warning point to an also undocumented
alternative that lives in `contrib.auth`.
Also did some PEP8 and other cleanups in the affected modules.
There were a couple of places which used Query.join() directly. By
using setup_joins() in these places the code is more DRY, and in
addition there is no need to directly call field.get_joining_columns()
unless the field is the given join_field from get_path_info(). This
makes it easier to make sure a ForeignObject subclass generates joins
correctly in all cases.
The join used by select_related was incorrectly INNER when the query
had an ORed filter for nullable join that was trimmed away. Fixed this
by forcing the join type to LOUTER even when a join was trimmed away
in ORed queries.
This reverts commit 64041f0e6e.
lookup.tests.LookupTests.test_regex_non_string fails under Postgres.
We should also try to rewrite the test using an existing model.
This can be used to make Django's test suite significantly faster by
reducing the number of models for which content types and permissions
must be created and tables must be flushed in each non-transactional
test.
It's documented for Django contributors and committers but it's branded
as a private API to preserve our freedom to change it in the future.
Most of the credit goes to Anssi. He got the idea and did the research.
Fixed#20483.
Anssi Kääriäinen
Садовский Николай
Aymeric Augustin
Eric Boersma
Carl Meyer
Tim Graham
Claude Paroz
Simon Charette
Harm Geerts
Alex Cucu
Shai Berger
ersran9
Andrew Godwin
Loic Bistuer
Andrew Clark
Gilberto Gonçalves
Florian Hahn
Baptiste Mispelon
Axel Haustant