... されます。 ExclusionConstraint ¶ class ExclusionConstraint ( * , name , expressions , index_type = None , condition = None , deferrable = None , include = None , violation_error_code = None , violation_error_message = None ) [ソース] ¶ データベースに排他制約 ... condition=Q(cancelled=False) 。 これらの条件は、 django.db.models.Index.condition と同じデータベースの制約事項を持ちます。 deferrable ¶ ExclusionConstraint. deferrable ¶ 遅延可能な排他制約を作成するには、このパラメータを設定します。使用可能な値は Deferrabl ... e.DEFERRED または Deferrable.IMMEDIATE です。例: from django.contrib.postgres.constraints import ExclusionConstraint from django.contrib.postgres.field ... ... されます。 ExclusionConstraint ¶ class ExclusionConstraint ( * , name , expressions , index_type = None , condition = None , deferrable = None , include = None , violation_error_code = None , violation_error_message = None ) [ソース] ¶ データベースに排他制約 ... condition=Q(cancelled=False) 。 これらの条件は、 django.db.models.Index.condition と同じデータベースの制約事項を持ちます。 deferrable ¶ ExclusionConstraint. deferrable ¶ 遅延可能な排他制約を作成するには、このパラメータを設定します。使用可能な値は Deferrabl ... e.DEFERRED または Deferrable.IMMEDIATE です。例: from django.contrib.postgres.constraints import ExclusionConstraint from django.contrib.postgres.field ... ... name = "age_gte_18" ) UniqueConstraint ¶ class UniqueConstraint ( * expressions , fields = () , name , condition = None , deferrable = None , include = None , opclasses = () , nulls_distinct = None , violation_error_code = None , violation_error_message = ... ザーが1つの DRAFT しか持たないことを保証します。 これらの condition は Index.condition と同じデータベースの制限を持ちます。 deferrable ¶ UniqueConstraint. deferrable ¶ このパラメータを指定すると、遅延可能なユニーク制約を作成できます。使用可能な値は Deferrab ... le.DEFERRED または Deferrable.IMMEDIATE です。例えば: from django.db.models import Deferrable , UniqueConstraint UniqueConstraint ( name = "unique_order ... ... name = "age_gte_18" ) UniqueConstraint ¶ class UniqueConstraint ( * expressions , fields = () , name , condition = None , deferrable = None , include = None , opclasses = () , nulls_distinct = None , violation_error_code = None , violation_error_message = ... ザーが1つの DRAFT しか持たないことを保証します。 これらの condition は Index.condition と同じデータベースの制限を持ちます。 deferrable ¶ UniqueConstraint. deferrable ¶ このパラメータを指定すると、遅延可能なユニーク制約を作成できます。使用可能な値は Deferrab ... le.DEFERRED または Deferrable.IMMEDIATE です。例えば: from django.db.models import Deferrable , UniqueConstraint UniqueConstraint ( name = "unique_order ... ... ing by cover density. The new normalization parameter of SearchRank allows rank normalization. The new ExclusionConstraint.deferrable attribute allows creating deferrable exclusion constraints. django.contrib.sessions ¶ The SESSION_COOKIE_SAMESITE setting ... as deterministic on Python 3.8+. This allows using them in check constraints and partial indexes. The new UniqueConstraint.deferrable attribute allows creating deferrable unique constraints. ページネーション ¶ Paginator can now be iterated over to yield it ... ... pplication/json' . The new ORACLE_MANAGED_FILES test database setting allows using Oracle Managed Files (OMF) tablespaces. Deferrable database constraints are now checked at the end of each TestCase test on SQLite 3.20+, just like on other backends that su ... pport deferrable constraints. These checks aren't implemented for older versions of SQLite because they would require expensive table intro ... he old values are still accepted as data. Group.name max_length is increased from 80 to 150 characters. Tests that violate deferrable database constraints now error when run on SQLite 3.20+, just like on other backends that support such constraints. To cat ... ... ing by cover density. The new normalization parameter of SearchRank allows rank normalization. The new ExclusionConstraint.deferrable attribute allows creating deferrable exclusion constraints. django.contrib.sessions ¶ The SESSION_COOKIE_SAMESITE setting ... as deterministic on Python 3.8+. This allows using them in check constraints and partial indexes. The new UniqueConstraint.deferrable attribute allows creating deferrable unique constraints. ページネーション ¶ Paginator can now be iterated over to yield it ... ... pplication/json' . The new ORACLE_MANAGED_FILES test database setting allows using Oracle Managed Files (OMF) tablespaces. Deferrable database constraints are now checked at the end of each TestCase test on SQLite 3.20+, just like on other backends that su ... pport deferrable constraints. These checks aren't implemented for older versions of SQLite because they would require expensive table intro ... he old values are still accepted as data. Group.name max_length is increased from 80 to 150 characters. Tests that violate deferrable database constraints now error when run on SQLite 3.20+, just like on other backends that support such constraints. To cat ... ... et_date_trunc_sql connection.ops.date_trunc_sql backend.get_datetime_cast_sql connection.ops.datetime_cast_sql backend.get_deferrable_sql connection.ops.deferrable_sql backend.get_drop_foreignkey_sql connection.ops.drop_foreignkey_sql backend.get_fulltext_ ... ... レートタグが、文字列引数に対して相対パスをサポートするようになりました。 テスト ¶ To better catch bugs, TestCase now checks deferrable database constraints at the end of each test. Tests and test cases can be marked with tags and run selectively with the ne ... es argument of the render_options() method is also removed, making selected_choices the first argument. Tests that violate deferrable database constraints will now error when run on a database that supports deferrable constraints. Built-in management comma ... 2026年10月08日