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QuerySet API リファレンス — Django 4.0.6 ドキュメント 12343
" + tagname + " "); } }); $("div.highlight\\-html\\+django span.nf").each(function(i, elem) { va ... ntents as described here. Restrictions on QuerySet.values_list() If you recreate QuerySet.values_list() usin ... query attribute, it will be converted to QuerySet.values() : >>> import pickle >>> qs = Blog . objects . va ... esults are being returned. Similarly, if you use a values() query to restrict the columns selected, the colu ... lated models. Similarly, when using distinct() and values() together, be careful when ordering by fields not ...
https://man.plustar.jp/django/ref/models/querysets.html - [similar]
PostgreSQL specific aggregation functions — Django 4.0.6 ドキュメント 10539
" + tagname + " "); } }); $("div.highlight\\-html\\+django span.nf").each(function(i, elem) { va ... e , ordering = () , ** extra ) ¶ Returns a list of values, including nulls, concatenated into an array, or d ... efault if there are no values. distinct ¶ An optional boolean argument that dete ... rmines if array values will be distinct. Defaults to False . ordering ¶ A ... ns an int of the bitwise AND of all non-null input values, or default if all values are null. BitOr ¶ class ...
https://man.plustar.jp/django/ref/contrib/postgres/aggregates.html - [similar]
クエリー式 — Django 4.0.6 ドキュメント 9752
" + tagname + " "); } }); $("div.highlight\\-html\\+django span.nf").each(function(i, elem) { va ... lumn. It makes it possible to refer to model field values and perform database operations using them without ... ield and describe the operation. To access the new value saved this way, the object must be reloaded: report ... t of objects against criteria based on their field values, rather than on Python values. This is documented ... oyota > >> car . built_by 3 Using F() to sort null values ¶ Use F() and the nulls_first or nulls_last keywor ...
https://man.plustar.jp/django/ref/models/expressions.html - [similar]
アグリゲーション — Django 4.0.6 ドキュメント 9457
" + tagname + " "); } }); $("div.highlight\\-html\\+django span.nf").each(function(i, elem) { va ... ( 'price' )) Filtering on annotations ¶ Annotated values can also be filtered. The alias for the annotation ... Count ( 'authors' )) . order_by ( 'num_authors' ) values() ¶ Ordinarily, annotations are generated on a per ... object in the original QuerySet . However, when a values() clause is used to constrain the columns that are ... unique combinations of the fields specified in the values() clause. An annotation is then provided for each ...
https://man.plustar.jp/django/topics/db/aggregation.html - [similar]
モデルインスタンスリファレンス — Django 4.0.6 ドキュメント 8374
" + tagname + " "); } }); $("div.highlight\\-html\\+django span.nf").each(function(i, elem) { va ... ¶ classmethod Model. from_db ( db , field_names , values ) ¶ from_db() メソッドを使うと、データベースから読 ... は読み込まれるすべてのフィールドの名前を持ち、そして values は field_names 内各フィールドに対応した値を持ちます ... 。 field_names は values と同じ並び順になります。モデルのフィールドが全て存 ... 在する場合、 values はその順番が __init__() が期待する順番である事が保 ...
https://man.plustar.jp/django/ref/models/instances.html - [similar]
GDAL API — Django 4.0.6 ドキュメント 8254
" + tagname + " "); } }); $("div.highlight\\-html\\+django span.nf").each(function(i, elem) { va ... oUnicodeDecodeError exceptions while reading field values. Once you've created your DataSource , you can fin ... et_fields () ¶ A method that returns a list of the values of a given field for each feature in the layer: >> ... n integer. The FIELD_CLASSES dictionary maps these values onto subclasses of Field : >>> city [ 'Density' ] ... tem or GDAL virtual filesystem), a dictionary with values defining a new raster, or a bytes object represent ...
https://man.plustar.jp/django/ref/contrib/gis/gdal.html - [similar]
Related objects reference — Django 4.0.6 ドキュメント 7948
" + tagname + " "); } }); $("div.highlight\\-html\\+django span.nf").each(function(i, elem) { va ... hips add() accepts either model instances or field values, normally primary keys, as the *objs argument. Use ... the through_defaults argument to specify values for the new intermediate model instance(s), if nee ... ded. You can use callables as values in the through_defaults dictionary and they will b ... o b . Use the through_defaults argument to specify values for the new intermediate model instance, if needed ...
https://man.plustar.jp/django/ref/models/relations.html - [similar]
How to manage error reporting — Django 4.0.6 ドキュメント 7707
" + tagname + " "); } }); $("div.highlight\\-html\\+django span.nf").each(function(i, elem) { va ... contain sensitive information, you may prevent the values of those variables from being included in error re ... r name = user . name ... In the above example, the values for the user , pw and cc variables will be hidden ... contain sensitive information, you may prevent the values of those parameters from being included in the err ... . POST [ 'name' ], ) ... In the above example, the values for the pass_word and credit_card_number POST para ...
https://man.plustar.jp/django/howto/error-reporting.html - [similar]
PostgreSQL specific query expressions — Django 4.0.6 ドキュメント 7587
" + tagname + " "); } }); $("div.highlight\\-html\\+django span.nf").each(function(i, elem) { va ... he PostgreSQL ARRAY constructor to build a list of values from the queryset, which must use QuerySet.values( ... equire an SQL GROUP BY clause to build the list of values. For example, if you want to annotate all related ... . objects . filter ( author = OuterRef ( 'pk' )) . values ( ... json = JSONObject ( title = 'title' , pages ... ーワード expressions , PostgreSQL , ArraySubquery , values , from , list , トピック , query , queryset , next ...
https://man.plustar.jp/django/ref/contrib/postgres/expressions.html - [similar]
Django 1.11.8 リリースノート — Django 4.0.6 ドキュメント 7533
" + tagname + " "); } }); $("div.highlight\\-html\\+django span.nf").each(function(i, elem) { va ... odelBackend ( #28645 ). Added support for QuerySet.values() and values_list() for union() , difference() , a ... ator() use server-side cursors on PostgreSQL after values() and values_list() ( #28817 ). Fixed crash on SQL ... ピックへ Django 1.11.7 リリースノート 関連キーワード values , when , Fixed , Made , use , uses , Bugfixes , Qu ...
https://man.plustar.jp/django/releases/1.11.8.html - [similar]
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