Results of 61 - 70 of about 78 for expression (0.070 sec.)
- How to write custom lookups — Django 4.0.6 ドキュメント 6198
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... を表します。左辺は通常フィールド参照ですが、 query expression API を実装するものであれば何でもかまいません。右辺 ...
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https://man.plustar.jp/django/howto/custom-lookups.html
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- GIS QuerySet API リファレンス — Django 4.0.6 ドキュメント 6198
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... units of the field, a Distance object, or a query expression ). To pass a band index to the lookup, use a 3-tup ...
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https://man.plustar.jp/django/ref/contrib/gis/geoquerysets.html
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- PostgreSQL specific model fields — Django 4.0.6 ドキュメント 6198
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... NOT_GT = '&<' ADJACENT_TO = '-|-' RangeBoundary() expressions ¶ class RangeBoundary ( inclusive_lower = True , ... , otherwise it's inclusive ']' . A RangeBoundary() expression represents the range boundaries. It can be used wi ... ur own range types Range operators RangeBoundary() expressions 前のトピックへ PostgreSQL specific query expressi ...
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https://man.plustar.jp/django/ref/contrib/postgres/fields.html
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- モデルフィールドリファレンス — Django 4.0.6 ドキュメント 6198
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... , from_db_value() is used: from_db_value ( value , expression , connection ) ¶ Converts a value as returned by t ... n type, or the backend itself does the conversion. expression is the same as self . See Converting values to Pyt ...
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https://man.plustar.jp/django/ref/models/fields.html
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- Django 3.1 release notes — Django 4.0.6 ドキュメント 6198
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... stgreSQL 11+. SearchQuery.value now supports query expressions. The new SearchHeadline class allows highlighting ... search results. search lookup now supports query expressions. The new cover_density parameter of SearchRank al ... TRICT . CheckConstraint.check now supports boolean expressions. The RelatedManager.add() , create() , and set() ... of nonexistent and ambiguous datetimes. The new F expression bitxor() method allows bitwise XOR operation . Que ...
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https://man.plustar.jp/django/releases/3.1.html
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- データベースアクセスの最適化 — Django 4.0.6 ドキュメント 6198
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... を使ってデータベース内でフィルタリングを行います。 F expressions を使い、同一モデル内で他のフィールドに基づくフィル ... bjects from ManyToManyFields , use delete() on a Q expression with multiple through model instances to reduce th ...
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https://man.plustar.jp/django/topics/db/optimization.html
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- 素の SQL 文の実行 — Django 4.0.6 ドキュメント 6198
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... ctions . Beyond those, you can create custom query expressions . Before using raw SQL, explore the ORM . Ask on ... L to compute annotations by instead using a Func() expression . raw() にパラメータを渡す ¶ パラメータを用いたクエ ...
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https://man.plustar.jp/django/topics/db/sql.html
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- パフォーマンスと最適化 — Django 4.0.6 ドキュメント 6198
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... , particularly through the generator and generator expression constructs. It's worth reading up on laziness in P ...
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https://man.plustar.jp/django/topics/performance.html
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- How to create custom model fields — Django 4.0.6 ドキュメント 6157
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... Field ): # ... def from_db_value ( self , value , expression , connection ): if value is None : return value re ...
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https://man.plustar.jp/django/howto/custom-model-fields.html
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- How to create custom template tags and filters — Django 4.0.6 ドキュメント 6157
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... ( parser , token ): # This version uses a regular expression to parse tag contents. try : # Splitting by None = ...
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https://man.plustar.jp/django/howto/custom-template-tags.html
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