django.git/django/db/models/sql, branch 4.0 django http://cgit.adnoto.dev/django.git/atom?h=4.0 2021-09-30T09:26:53Z [4.0.x] Fixed #33159 -- Reverted "Fixed #32970 -- Changed WhereNode.clone() to create a shallow copy of children." 2021-09-30T09:26:53Z Mariusz Felisiak felisiak.mariusz@gmail.com 2021-09-30T09:26:17Z urn:sha1:93a42d43a6995993b9bbcb743ab3c2a2b8414ebd This reverts commit e441847ecae99dd1ccd0d9ce76dbcff51afa863c. A shallow copy is not enough because querysets can be reused and evaluated in nested nodes, which shouldn't mutate JOIN aliases. Thanks Michal Čihař for the report. Backport of 903aaa35e5ceaa33bfc9b19b7f6da65ce5a91dd4 from main [4.0.x] Fixed #33018 -- Fixed annotations with empty queryset. 2021-09-29T18:53:16Z David Wobrock david.wobrock@gmail.com 2021-09-28T22:00:50Z urn:sha1:b2a0978610413e4cd5ebb716b8bfa7803dff8d5b Thanks Simon Charette for the review and implementation idea. Backport of dd1fa3a31b4680c0d3712e6ae122b878138580c7 from main [4.0.x] Fixed #33141 -- Renamed Expression.empty_aggregate_value to empty_result_set_value. 2021-09-29T18:52:59Z David Wobrock david.wobrock@gmail.com 2021-09-24T20:05:02Z urn:sha1:aab76433ed585ebe997b94547e0d790605e01ad9 Backport of ad36a198a12df4dff65992191b3eb0a474e2daac from main Refs #27624 -- Optimized Query.clone() for non-combined queries. 2021-09-20T10:34:18Z Keryn Knight keryn@kerynknight.com 2021-09-16T10:03:04Z urn:sha1:5353e7c2505c0d0ab8232ad9c131b3c99c833988 This avoids constructing a generator expression and a new tuple if the Query has no combined queries. Fixed #32970 -- Changed WhereNode.clone() to create a shallow copy of children. 2021-09-20T05:03:10Z Keryn Knight keryn@kerynknight.com 2021-07-26T18:19:38Z urn:sha1:e441847ecae99dd1ccd0d9ce76dbcff51afa863c Refs #27624 -- Changed Query.explain_info to namedtuple. 2021-09-17T05:15:12Z Adam Johnson me@adamj.eu 2021-09-14T17:08:19Z urn:sha1:fc91ea1e50e5ef207f0f291b3f6c1942b10db7c7 Optimized Query.clone() a bit. 2021-09-17T05:12:56Z Adam Johnson me@adamj.eu 2021-09-17T05:08:55Z urn:sha1:2931d847c246b6f499993e370f6d9a53a83120d2 This removes unnecessary "if ... is None" branches, which are already shallow-copied in the __dict__.copy() call. Fixed #33073 -- Fixed queryset crash with aggregation and empty/extra queryset annotation. 2021-09-01T18:59:16Z David Wobrock david.wobrock@gmail.com 2021-08-31T20:37:07Z urn:sha1:691486a5cf7588c95250a873c5b57748e82fc4c2 Fixed #33025 -- Avoided accessing the database connections in Query.build_lookup() when not necessary. 2021-08-19T11:28:59Z Keryn Knight keryn@kerynknight.com 2021-08-14T14:30:54Z urn:sha1:bf5abf1bdcedb15e949db419c61eeec7c88414ea Of the built-in backends, only Oracle treats empty strings and nulls as equal, so avoid testing the default connection backend for interprets_empty_strings_as_nulls if it can be established from the lookup that it wouldn't affect the lookup instance returned. This improves performance a small amount for most lookups being built, because accessing the connections requires touching the thread critical `Local` which is an expensive operation. Removed unnecessary WhereNode.is_summary. 2021-08-09T17:23:29Z Mariusz Felisiak felisiak.mariusz@gmail.com 2021-08-09T17:23:29Z urn:sha1:b64db05b9cedd96905d637a2d824cbbf428e40e7 Unnecessary since its introduction in 1df89a60c5b7a28d7fda4c9ba7c07f02fd7de0fa.