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Database instrumentation — Django 4.0.6 ドキュメント 13770
" + tagname + " "); } }); $("div.highlight\\-html\\+django span.nf").each(function(i, elem) { va ... mentation ¶ To help you understand and control the queries issued by your code, Django provides a hook for in ... wrapper functions around the execution of database queries. For example, wrappers can count queries, measure ... query duration, log queries, or even prevent query execution (e.g. to make sur ... e that no queries are issued while rendering a template with prefetc ...
https://man.plustar.jp/django/topics/db/instrumentation.html - [similar]
GeoDjango Database API — Django 4.0.6 ドキュメント 10798
" + tagname + " "); } }); $("div.highlight\\-html\\+django span.nf").each(function(i, elem) { va ... ango.db import connection >>> print ( connection . queries [ - 1 ][ 'sql' ]) # printing the last SQL statemen ... l lookup reference . Geometry Lookups ¶ Geographic queries with geometries take the following general form (a ... ect. The band index defaults to 0 in the first two queries and is set to 1 on the others. While all spatial l ... y only available for the PostGIS backend. Distance Queries ¶ はじめに ¶ Distance calculations with spatial da ...
https://man.plustar.jp/django/ref/contrib/gis/db-api.html - [similar]
FAQ: データベースとモデル — Django 4.0.6 ドキュメント 10400
" + tagname + " "); } }); $("div.highlight\\-html\\+django span.nf").each(function(i, elem) { va ... from django.db import connection >>> connection . queries [{'sql': 'SELECT polls_polls.id, polls_polls.quest ... te FROM polls_polls', 'time': '0.002'}] connection.queries は DEBUG が True の場合のみに、利用することができま ... statement took to execute, in seconds. connection.queries にはINSERT, UPDATE, SELECTなどの全てのSQL文が記録さ ... rt connections >>> connections [ 'my_db_alias' ] . queries もし、何らかの関数の中でクエリのリストをクリアする ...
https://man.plustar.jp/django/faq/models.html - [similar]
Django 1.8.5 リリースノート — Django 4.0.6 ドキュメント 10188
" + tagname + " "); } }); $("div.highlight\\-html\\+django span.nf").each(function(i, elem) { va ... st ( #24704 ). Fixed AssertionError in some delete queries with a model containing a field that is both a for ... y ( #24951 ). Fixed AssertionError in some complex queries ( #24525 ). Fixed a migrations crash with GenericF ... th an unhashable default ( #25393 ). Changed Count queries to execute COUNT(*) instead of COUNT('*') as versi ... eepdb option on Oracle ( #25421 ). Fixed incorrect queries with multiple many-to-many fields on a model with ...
https://man.plustar.jp/django/releases/1.8.5.html - [similar]
データベースアクセスの最適化 — Django 4.0.6 ドキュメント 10095
" + tagname + " "); } }); $("div.highlight\\-html\\+django span.nf").each(function(i, elem) { va ... ための独自の SQL を記述します。 django.db.connection.queries を使い、Django があなたのために何を書いているのかを ... e: Since QuerySets are lazy, this does no database queries if display_group_members is False . Storing group. ... is in the result cache, so no additional database queries are issued. The use of len(members) calls QuerySet ... , reusing the result cache, so again, no database queries are issued. The for member loop iterates over the ...
https://man.plustar.jp/django/topics/db/optimization.html - [similar]
Django 2.2 リリースノート — Django 4.0.6 ドキュメント 8755
" + tagname + " "); } }); $("div.highlight\\-html\\+django span.nf").each(function(i, elem) { va ... Model Meta.ordering will no longer affect GROUP BY queries ¶ A model's Meta.ordering affecting GROUP BY queri ... ).values() ) is a common source of confusion. Such queries now issue a deprecation warning with the advice to ... rrent query. Meta.ordering will be ignored in such queries starting in Django 3.1. その他 ¶ django.utils.time ... d in Django 3.1. The SimpleTestCase.allow_database_queries , TransactionTestCase.multi_db , and TestCase.mult ...
https://man.plustar.jp/django/releases/2.2.html - [similar]
Django 3.1.2 release notes — Django 4.0.6 ドキュメント 8662
" + tagname + " "); } }); $("div.highlight\\-html\\+django span.nf").each(function(i, elem) { va ... d attribute returned incorrectly True for GROUP BY queries (e.g. .annotate().values() ) on models with Meta.o ... ring . A model's Meta.ordering doesn't affect such queries ( #31990 ). Fixed a regression in Django 3.1 where ... tes , Fixed , regression , not , ordering , Meta , queries , database , when クイック検索 Last update: 2022年 ...
https://man.plustar.jp/django/releases/3.1.2.html - [similar]
QuerySet API リファレンス — Django 4.0.6 ドキュメント 8556
" + tagname + " "); } }); $("div.highlight\\-html\\+django span.nf").each(function(i, elem) { va ... practice, this is rarely a problem, because simple queries such as Blog.objects.all() don't introduce the pos ... ons on what operations are allowed in the combined queries. For example, most databases don't allow LIMIT or ... OFFSET in the combined queries. intersection() ¶ intersection ( * other_qs ) ¶ Us ... f foreign-key relationships won't require database queries. The following examples illustrate the difference ...
https://man.plustar.jp/django/ref/models/querysets.html - [similar]
Django 1.6 release notes — Django 4.0.6 ドキュメント 8251
" + tagname + " "); } }); $("div.highlight\\-html\\+django span.nf").each(function(i, elem) { va ... ) to allow customizing the prefix of the form. Raw queries ( Manager.raw() or cursor.execute() ) can now use ... ckwards-incompatibilities. Savepoints and assertNumQueries ¶ The changes in transaction management may result ... points until this release. If tests using assertNumQueries() fail because of a higher number of queries than ... expected, check that the extra queries are related to savepoints, and adjust the expected ...
https://man.plustar.jp/django/releases/1.6.html - [similar]
データベース — Django 4.0.6 ドキュメント 8039
" + tagname + " "); } }); $("div.highlight\\-html\\+django span.nf").each(function(i, elem) { va ... n, but each new connection will do some additional queries to set these parameters. Isolation level ¶ Like Po ... s that only the first 10% of the results of cursor queries will be fetched. The query planner spends less tim ... her connection to the database in order to perform queries that use server-side cursors. This connection need ... have no effect. "pyformat" parameter style in raw queries not supported ¶ For most backends, raw queries ( M ...
https://man.plustar.jp/django/ref/databases.html - [similar]
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