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path: root/django/db/models/sql/constants.py
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2025-01-03Fixed #35918 -- Added support for execute_sql to directly return row counts.Raphael Gaschignard
2022-02-07Refs #33476 -- Reformatted code with Black.django-bot
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.
2019-10-29Fixed #30899 -- Lazily compiled import time regular expressions.Hasan Ramezani
2017-11-18Fixed #26184 -- Allowed using any lookups in ModelAdmin.search_fields.Krzysztof Nazarewski
Thanks Krzysztof Nazarewski for the initial patch.
2015-01-08Fixed #24020 -- Refactored SQL compiler to use expressionsAnssi Kääriäinen
Refactored compiler SELECT, GROUP BY and ORDER BY generation. While there, also refactored select_related() implementation (get_cached_row() and get_klass_info() are now gone!). Made get_db_converters() method work on expressions instead of internal_type. This allows the backend converters to target specific expressions if need be. Added query.context, this can be used to set per-query state. Also changed the signature of database converters. They now accept context as an argument.
2014-11-28Fixed #23853 -- Added Join class to replace JoinInfoAnssi Kääriäinen
Also removed Query.join_map. This structure was used to speed up join reuse calculation. Initial benchmarking shows that this isn't actually needed. If there are use cases where the removal has real-world performance implications, it should be relatively straightforward to reintroduce it as map {alias: [Join-like objects]}.
2014-09-29Replaced set([foo, ...]) by {foo, ...} literals. Refs PR 3282.Thomas Chaumeny
Thanks Collin Anderson for the review.
2014-02-02Made SQLCompiler.execute_sql(result_type) more explicit.Michael Manfre
Updated SQLUpdateCompiler.execute_sql to match the behavior described in the docstring; the 'first non-empty query' will now include all queries, not just the main and first related update. Added CURSOR and NO_RESULTS result_type constants to make the usages more self documenting and allow execute_sql to explicitly close the cursor when it is no longer needed.
2013-03-24Fixed #19385 again, now with real code changesAnssi Kääriäinen
The commit of 266de5f9ae9e9f2fbfaec3b7e4b5fb9941967801 included only tests, this time also code changes included...
2013-02-16Fixed #17260 -- Added time zone aware aggregation and lookups.Aymeric Augustin
Thanks Carl Meyer for the review. Squashed commit of the following: commit 4f290bdb60b7d8534abf4ca901bd0844612dcbda Author: Aymeric Augustin <aymeric.augustin@m4x.org> Date: Wed Feb 13 21:21:30 2013 +0100 Used '0:00' instead of 'UTC' which doesn't always exist in Oracle. Thanks Ian Kelly for the suggestion. commit 01b6366f3ce67d57a58ca8f25e5be77911748638 Author: Aymeric Augustin <aymeric.augustin@m4x.org> Date: Wed Feb 13 13:38:43 2013 +0100 Made tzname a parameter of datetime_extract/trunc_sql. This is required to work around a bug in Oracle. commit 924a144ef8a80ba4daeeafbe9efaa826566e9d02 Author: Aymeric Augustin <aymeric.augustin@m4x.org> Date: Wed Feb 13 14:47:44 2013 +0100 Added support for parameters in SELECT clauses. commit b4351d2890cd1090d3ff2d203fe148937324c935 Author: Aymeric Augustin <aymeric.augustin@m4x.org> Date: Mon Feb 11 22:30:22 2013 +0100 Documented backwards incompatibilities in the two previous commits. commit 91ef84713c81bd455f559dacf790e586d08cacb9 Author: Aymeric Augustin <aymeric.augustin@m4x.org> Date: Mon Feb 11 09:42:31 2013 +0100 Used QuerySet.datetimes for the admin's date_hierarchy. commit 0d0de288a5210fa106cd4350961eb2006535cc5c Author: Aymeric Augustin <aymeric.augustin@m4x.org> Date: Mon Feb 11 09:29:38 2013 +0100 Used QuerySet.datetimes in date-based generic views. commit 9c0859ff7c0b00734afe7fc15609d43d83215072 Author: Aymeric Augustin <aymeric.augustin@m4x.org> Date: Sun Feb 10 21:43:25 2013 +0100 Implemented QuerySet.datetimes on Oracle. commit 68ab511a4ffbd2b811bf5da174d47e4dd90f28fc Author: Aymeric Augustin <aymeric.augustin@m4x.org> Date: Sun Feb 10 21:43:14 2013 +0100 Implemented QuerySet.datetimes on MySQL. commit 22d52681d347a8cdf568dc31ed032cbc61d049ef Author: Aymeric Augustin <aymeric.augustin@m4x.org> Date: Sun Feb 10 21:42:29 2013 +0100 Implemented QuerySet.datetimes on SQLite. commit f6800fd04c93722b45f9236976389e0b2fe436f5 Author: Aymeric Augustin <aymeric.augustin@m4x.org> Date: Sun Feb 10 21:43:03 2013 +0100 Implemented QuerySet.datetimes on PostgreSQL. commit 0c829c23f4cf4d6804cadcc93032dd4c26b8c65e Author: Aymeric Augustin <aymeric.augustin@m4x.org> Date: Sun Feb 10 21:41:08 2013 +0100 Added datetime-handling infrastructure in the ORM layers. commit 104d82a7778cf3f0f5d03dfa53709c26df45daad Author: Aymeric Augustin <aymeric.augustin@m4x.org> Date: Mon Feb 11 10:05:55 2013 +0100 Updated null_queries tests to avoid clashing with the __second lookup. commit c01bbb32358201b3ac8cb4291ef87b7612a2b8e6 Author: Aymeric Augustin <aymeric.augustin@m4x.org> Date: Sun Feb 10 23:07:41 2013 +0100 Updated tests of .dates(). Replaced .dates() by .datetimes() for DateTimeFields. Replaced dates with datetimes in the expected output for DateFields. commit 50fb7a52462fecf0127b38e7f3df322aeb287c43 Author: Aymeric Augustin <aymeric.augustin@m4x.org> Date: Sun Feb 10 21:40:09 2013 +0100 Updated and added tests for QuerySet.datetimes. commit a8451a5004c437190e264667b1e6fb8acc3c1eeb Author: Aymeric Augustin <aymeric.augustin@m4x.org> Date: Sun Feb 10 22:34:46 2013 +0100 Documented the new time lookups and updated the date lookups. commit 29413eab2bd1d5e004598900c0dadc0521bbf4d3 Author: Aymeric Augustin <aymeric.augustin@m4x.org> Date: Sun Feb 10 16:15:49 2013 +0100 Documented QuerySet.datetimes and updated QuerySet.dates.
2012-12-30Moved join path generation to FieldAnssi Kääriäinen
Refs #19385
2012-12-20Fixed #19500 -- Solved a regression in join reuseAnssi Kääriäinen
The ORM didn't reuse joins for direct foreign key traversals when using chained filters. For example: qs.filter(fk__somefield=1).filter(fk__somefield=2)) produced two joins. As a bonus, reverse onetoone filters can now reuse joins correctly The regression was caused by the join() method refactor in commit 68847135bc9acb2c51c2d36797d0a85395f0cd35 Thanks for Simon Charette for spotting some issues with the first draft of the patch.
2012-12-16Fixed #10790 -- Refactored sql.Query.setup_joins()Anssi Kääriäinen
This is a rather large refactoring. The "lookup traversal" code was splitted out from the setup_joins. There is now names_to_path() method which does the lookup traveling, the actual work of setup_joins() is calling names_to_path() and then adding the joins found into the query. As a side effect it was possible to remove the "process_extra" functionality used by genric relations. This never worked for left joins. Now the extra restriction is appended directly to the join condition instead of the where clause. To generate the extra condition we need to have the join field available in the compiler. This has the side-effect that we need more ugly code in Query.__getstate__ and __setstate__ as Field objects aren't pickleable. The join trimming code got a big change - now we trim all direct joins and never trim reverse joins. This also fixes the problem in #10790 which was join trimming in null filter cases.
2012-10-31Removed dupe_avoidance from sql/query and sql/compiler.pyAnssi Kääriäinen
The dupe avoidance logic was removed as it doesn't seem to do anything, it is complicated, and it has nearly zero documentation. The removal of dupe_avoidance allowed for refactoring of both the implementation and signature of Query.join(). This refactoring cascades again to some other parts. The most significant of them is the changes in qs.combine(), and compiler.select_related_descent().
2012-10-27Fixed #19190 -- Refactored Query select clause attributesAnssi Kääriäinen
The Query.select and Query.select_fields were collapsed into one list because the attributes had to be always in sync. Now that they are in one attribute it is impossible to edit them out of sync. Similar collapse was done for Query.related_select_cols and Query.related_select_fields.
2012-09-08Internal refactoring; moving LOOKUP_SEP up one level.Malcolm Tredinnick
In an ideal world, nothing except django.db.models.query should have to import stuff from django.models.sql.*. A few things were needing to get hold of sql.constants.LOOKUP_SEP, so this commit moves it up to django.db.models.constants.LOOKUP_SEP. There are still a couple of places (admin) poking into sql.* to get QUERY_TERMS, which is unfortunate, but a slightly different issue and harder to adjust.
2012-08-26Code comment fix.Mitar
2012-04-29Switch a datastructure internal to the ORM to be a set, instead of a dictionary.Alex Gaynor
2012-04-29Fixed #17644 -- Changed Query.alias_map to use namedtuplesAdrian Holovaty
This makes the code easier to understand and may even have a benefit in memory usage (namedtuples instead of dicts). Thanks, lrekucki and akaariai
2009-02-08Fixed #7672 -- Added a 'week_day' lookup type. Many thanks to Ross Poulton ↵Karen Tracey
for the proposal and implementation on all built-in database backends.. git-svn-id: http://code.djangoproject.com/svn/django/trunk@9818 bcc190cf-cafb-0310-a4f2-bffc1f526a37
2008-09-02Fixed #8439 -- Complex combinations of Q-objects (using both conjunctions andMalcolm Tredinnick
disjunctions) were producing incorrect SQL when nullable relations were involved. This fixes that. git-svn-id: http://code.djangoproject.com/svn/django/trunk@8832 bcc190cf-cafb-0310-a4f2-bffc1f526a37
2008-04-28Fixed #7098 -- Old-style related-model order_by() syntax was being incorrectlyMalcolm Tredinnick
marked as erroneous. It's just more dangerous and risky, not forbidden. This commit restores backwards compatibility there. git-svn-id: http://code.djangoproject.com/svn/django/trunk@7490 bcc190cf-cafb-0310-a4f2-bffc1f526a37
2008-04-27Merged the queryset-refactor branch into trunk.Malcolm Tredinnick
This is a big internal change, but mostly backwards compatible with existing code. Also adds a couple of new features. Fixed #245, #1050, #1656, #1801, #2076, #2091, #2150, #2253, #2306, #2400, #2430, #2482, #2496, #2676, #2737, #2874, #2902, #2939, #3037, #3141, #3288, #3440, #3592, #3739, #4088, #4260, #4289, #4306, #4358, #4464, #4510, #4858, #5012, #5020, #5261, #5295, #5321, #5324, #5325, #5555, #5707, #5796, #5817, #5987, #6018, #6074, #6088, #6154, #6177, #6180, #6203, #6658 git-svn-id: http://code.djangoproject.com/svn/django/trunk@7477 bcc190cf-cafb-0310-a4f2-bffc1f526a37
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