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2020-08-13Fixed #31792 -- Made Exists() reuse QuerySet.exists() optimizations.Simon Charette
The latter is already optimized to limit the number of results, avoid selecting unnecessary fields, and drop ordering if possible without altering the semantic of the query.
2020-08-11Fixed #31866 -- Fixed locking proxy models in QuerySet.select_for_update(of=()).Daniel Hillier
2020-07-31Fixed #27719 -- Added QuerySet.alias() to allow creating reusable aliases.Alexandr Tatarinov
QuerySet.alias() allows creating reusable aliases for expressions that don't need to be selected but are used for filtering, ordering, or as a part of complex expressions. Thanks Simon Charette for reviews.
2020-07-09Fixed #29789 -- Added support for nested relations to FilteredRelation.matt ferrante
2020-07-07Fixed #31767 -- Fixed QuerySet.none() on combined queryset.Mariusz Felisiak
2020-07-06Fixed #23797 -- Fixed QuerySet.exclude() when rhs is a nullable column.Jacob Walls
2020-06-10Fixed #31657 -- Fixed ordering by attnames of self-referential ForeignKeys.Hasan Ramezani
2020-06-08Fixed #31664 -- Reallowed using non-expressions having filterable attribute ↵Nicolas Baccelli
as rhs in queryset filters. Regression in 4edad1ddf6203326e0be4bdb105beecb0fe454c4.
2020-05-26Fixed #31614 -- Fixed aliases ordering by OrderBy() expressions of combined ↵Laurent Tramoy
queryset.
2020-05-25Fixed #31624 -- Avoided subquery usage on QuerySet.all().delete().Simon Charette
Thanks Adam Johnson for the report. Regression in 7acef095d73322f45dcceb99afa1a4e50b520479.
2020-05-21Fixed #30375 -- Added FOR NO KEY UPDATE support to ↵Manuel Weitzman
QuerySet.select_for_update() on PostgreSQL.
2020-05-14Fixed #31584 -- Fixed crash when chaining values()/values_list() after ↵Mariusz Felisiak
Exists() annotation and aggregation on Oracle. Oracle requires the EXISTS expression to be wrapped in a CASE WHEN in the GROUP BY clause. Regression in efa1908f662c19038a944129c81462485c4a9fe8.
2020-05-14Fixed #31568 -- Fixed alias reference when aggregating over multiple subqueries.Simon Charette
691def10a0197d83d2d108bd9043b0916d0f09b4 made all Subquery() instances equal to each other which broke aggregation subquery pushdown which relied on object equality to determine which alias it should select. Subquery.__eq__() will be fixed in an another commit but Query.rewrite_cols() should haved used object identity from the start. Refs #30727, #30188. Thanks Makina Corpus for the report.
2020-05-14Fixed #31566 -- Fixed aliases crash when chaining values()/values_list() ↵Simon Charette
after annotate() with aggregations and subqueries. Subquery annotation references must be resolved if they are excluded from the GROUP BY clause by a following .values() call. Regression in fb3f034f1c63160c0ff13c609acd01c18be12f80. Thanks Makina Corpus for the report.
2020-05-11Refs #30116 -- Simplified regex match group access with Match.__getitem__().Jon Dufresne
The method has been available since Python 3.6. The shorter syntax is also marginally faster.
2020-04-22Avoided unnecessary recompilation of ordering clause regex in SQLCompiler.Adam Johnson
2020-04-06Fixed #31426 -- Added proper field validation to QuerySet.order_by().Simon Charette
Resolve the field reference instead of using fragile regex based string reference validation.
2020-04-06Refs #7098 -- Deprecated passing raw column aliases to order_by().Simon Charette
Now that order_by() has expression support passing RawSQL() can achieve the same result. This was also already supported through QuerySet.extra(order_by) for years but this API is more or less deprecated at this point.
2020-04-06Fixed #31420 -- Fixed crash when filtering subquery annotation against a ↵Hasan Ramezani
SimpleLazyObject. Thanks Simon Charette for the solution and analysis.
2020-03-31Refs #31403 -- Made SQLInsertCompiler.execute_sql() always return an ↵Adam Johnson
iterable of rows. List of tuples.
2020-03-25Fixed #31377 -- Disabled grouping by aliases on ↵Hasan Ramezani
QuerySet.values()/values_list() when they collide with field names. Regression in fb3f034f1c63160c0ff13c609acd01c18be12f80. Thanks Holovashchenko Vadym for the report.
2020-03-19Fixed #31285 -- Fixed inherited Meta.ordering of "-pk".Jon Dufresne
2020-02-11Fixed #31246 -- Fixed locking models in QuerySet.select_for_update(of=()) ↵Abhijeet Viswa
for related fields and parent link fields with multi-table inheritance. Partly regression in 0107e3d1058f653f66032f7fd3a0bd61e96bf782.
2020-02-06Fixed #31233 -- Closed database connections and cursors after use.Jon Dufresne
2020-02-04Simplified imports from django.db and django.contrib.gis.db.Nick Pope
2020-02-03Fixed #31217 -- Made QuerySet.values()/values_list() group by not selected ↵Mariusz Felisiak
annotations with aggregations used in order_by(). Regression in 59b4e99dd00b9c36d56055b889f96885995e4240. Thanks Jon Dufresne for the report and Simon Charette for the review.
2020-01-15Refs #31136 -- Made QuerySet.values()/values_list() group only by selected ↵Mariusz Felisiak
annotation. Regression in 0f843fdd5b9b2f2307148465cd60f4e1b2befbb4.
2020-01-04Fixed #31136 -- Disabled grouping by aliases on QuerySet.values()/values_list().Mariusz Felisiak
Regression in fb3f034f1c63160c0ff13c609acd01c18be12f80. Thanks Sigurd Ljødal for the report.
2019-12-23Fixed #31109 -- Disabled grouping by aliases on QuerySet.exists().Simon Charette
Clearing the SELECT clause in Query.has_results was orphaning GROUP BY references to it. Thanks Thierry Bastian for the report and Baptiste Mispelon for the bisect. Regression in fb3f034f1c63160c0ff13c609acd01c18be12f80.
2019-12-19Fixed #31094 -- Included columns referenced by subqueries in GROUP BY on ↵Simon Charette
aggregations. Thanks Johannes Hoppe for the report. Regression in fb3f034f1c63160c0ff13c609acd01c18be12f80. Co-authored-by: Mariusz Felisiak <felisiak.mariusz@gmail.com>
2019-12-10Used Signature API instead of deprecated inspect.getcallargs().Baptiste Mispelon
inspect.getcallargs() was deprecated in Python 3.5 and the Signature API (PEP 362) has better support for decorated functions (by default, it follows the __wrapped__ attribute set by functools.wraps for example).
2019-12-06Made Query.check_filterable() use bool by default instead of str.Alex Aktsipetrov
2019-12-06Fixed #31060 -- Reallowed window expressions to be used in conditions ↵Alex Aktsipetrov
outside of queryset filters. Regression in 4edad1ddf6203326e0be4bdb105beecb0fe454c4. Thanks utapyngo for the report.
2019-12-02Fixed #30953 -- Made select_for_update() lock queryset's model when using ↵Mariusz Felisiak
"self" with multi-table inheritance. Thanks Abhijeet Viswa for the report and initial patch.
2019-11-21Refs #25367 -- Made Query.build_filter() raise TypeError on non-conditional ↵Simon Charette
expressions.
2019-11-21Fixed #30484 -- Added conditional expressions support to CheckConstraint.Simon Charette
2019-11-21Refs #25367 -- Moved conditional expression wrapping to the Exact lookup.Simon Charette
2019-11-21Refs #11964 -- Removed SimpleCol in favor of Query(alias_cols).Simon Charette
This prevent having to pass simple_col through multiple function calls by defining whether or not references should be resolved with aliases at the Query level.
2019-11-18Replaced QueryWrapper single usage with RawSQL.Simon Charette
2019-11-13Fixed #30971 -- Prevented Query.resolve_lookup_value() from coercing list ↵George Marshall
values to tuples. Regression in 8a281aa7fe76a9da2284f943964a9413697cff1f.
2019-10-29Fixed #30899 -- Lazily compiled import time regular expressions.Hasan Ramezani
2019-10-24Fixed #23576 -- Implemented multi-alias fast-path deletion in MySQL backend.Simon Charette
This required moving the entirety of DELETE SQL generation to the compiler where it should have been in the first place and implementing a specialized compiler on MySQL/MariaDB. The MySQL compiler relies on the "DELETE table FROM table JOIN" syntax for queries spanning over multiple tables.
2019-10-11Fixed #30854 -- Fixed QuerySet.select_related() with multiple FilteredRelations.Hasan Ramezani
2019-10-11Refs #30854 -- Moved local_setter() outside the loop in ↵Hasan Ramezani
SQLCompiler.get_related_selections().
2019-09-24Removed some outdated backwards compatibility imports and misleading comments.Mads Jensen
EmptyResultSet moved in 46509cf13dbf049f75077981c29ef2c60b5a96ab. FieldDoesNotExist moved in 8958170755b37ce346ae5257c1000bd936faa3b0. BoundField and pretty_name moved in 8550161e531a603d57723850fb09c4c9b7ca60b9. EMPTY_VALUES moved in 471596fc1afcb9c6258d317c619eaf5fd394e797. BaseRunserverCommand moved in 5c53e30607014163872e89c221b206992a9acfef.
2019-09-24Refs #29444 -- Removed redundant ↵Mariusz Felisiak
DatabaseFeatures.can_return_multiple_columns_from_insert. Unnecessary since b31e63879eb5d9717e9f890401f7222e4f00c910.
2019-09-24Fixed #29444 -- Allowed returning multiple fields from INSERT statements on ↵Johannes Hoppe
Oracle.
2019-09-24Fixed #30796 -- Prevented select_related() from mutating a queryset on chaining.Simon Charette
Thanks Darren Maki for the report.
2019-09-10Refs #14357 -- Made Meta.ordering not affect GROUP BY queries.Mariusz Felisiak
Per deprecation timeline.
2019-09-09Fixed #28107 -- Added ↵Vojtech Bocek
DatabaseFeatures.allows_group_by_selected_pks_on_model() to allow enabling optimization for unmanaged models.
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