Results of 1 - 10 of about 47 for Constraints (0.036 sec.)
- Constraints reference — Django 4.0.6 ドキュメント 14592
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... ontents | Index | Modules « previous | up | next » Constraints reference ¶ The classes defined in this module cre ... ate database constraints. They are added in the model Meta.constraints opti ... on. Referencing built-in constraints Constraints are defined in django.db.models.constr ... use from django.db import models and refer to the constraints as models.<Foo>Constraint . Constraints in abstrac ...
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https://man.plustar.jp/django/ref/models/constraints.html
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- PostgreSQL specific database constraints — Django 4.0.6 ドキュメント 13164
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... revious | up | next » PostgreSQL specific database constraints ¶ PostgreSQL supports additional data integrity co ... traints available from the django.contrib.postgres.constraints module. They are added in the model Meta.constrain ... abase. Internally, PostgreSQL implements exclusion constraints using indexes. The default index type is GiST . To ... nly commutative operators can be used in exclusion constraints. index_type ¶ ExclusionConstraint. index_type ¶ Th ...
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https://man.plustar.jp/django/ref/contrib/postgres/constraints.html
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- Django 2.2 リリースノート — Django 4.0.6 ドキュメント 10351
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... release of each series. What's new in Django 2.2 ¶ Constraints ¶ The new CheckConstraint and UniqueConstraint cla ... sses enable adding custom database constraints. Constraints are added to models using the Meta.co ... ignore failure to insert rows that fail uniqueness constraints or other checks. The new ExtractIsoYear function e ... naged Files (OMF) tablespaces. Deferrable database constraints are now checked at the end of each TestCase test o ...
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https://man.plustar.jp/django/releases/2.2.html
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- SchemaEditor — Django 4.0.6 ドキュメント 10123
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... actions and deferred SQL (like creating ForeignKey constraints). It exposes all possible operations as methods, t ... - for example, MyISAM does not support foreign key constraints. If you are writing or maintaining a third-party d ... base for the provided model, along with any unique constraints or indexes it requires. delete_model() ¶ BaseDatab ... odel's table in the database along with any unique constraints or indexes it has. add_index() ¶ BaseDatabaseSchem ...
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https://man.plustar.jp/django/ref/schema-editor.html
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- Database migration operations — Django 4.0.6 ドキュメント 8330
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... a transaction (see non-atomic migration ). Adding constraints without enforcing validation ¶ New in Django 4.0. ... tgreSQL supports the NOT VALID option with the ADD CONSTRAINT statement to add check constraints without enforcin ... ing rows satisfy the constraint. To validate check constraints created with the NOT VALID option at a later point ... sing migrations Concurrent index operations Adding constraints without enforcing validation 前のトピックへ Postgr ...
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https://man.plustar.jp/django/ref/contrib/postgres/operations.html
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- Django 4.0 release notes — Django 4.0.6 ドキュメント 8330
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... you need a gradual update path. Functional unique constraints ¶ The new *expressions positional argument of Uniq ... ueConstraint() enables creating functional unique constraints on expressions and database functions. For example ... dels . CharField ( max_length = 255 ) class Meta : constraints = [ UniqueConstraint ( Lower ( 'first_name' ), Low ... 'first_last_name_unique' , ), ] Functional unique constraints are added to models using the Meta.constraints opt ...
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https://man.plustar.jp/django/releases/4.0.html
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- Model Meta options — Django 4.0.6 ドキュメント 8147
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... s. unique_together ¶ Use UniqueConstraint with the constraints option instead. UniqueConstraint provides more fun ... elds: index_together = [ "pub_date" , "deadline" ] constraints ¶ Options. constraints ¶ A list of constraints tha ... del ): age = models . IntegerField () class Meta : constraints = [ models . CheckConstraint ( check = models . Q ... ect_on_save indexes unique_together index_together constraints verbose_name verbose_name_plural Read-only Meta at ...
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https://man.plustar.jp/django/ref/models/options.html
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- システムチェックフレームワーク — Django 4.0.6 ドキュメント 8086
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... er elements must be lists or tuples. models.E012 : constraints/indexes/index_together/unique_together refers to t ... he nonexistent field <field name> . models.E013 : constraints/indexes/index_together/unique_together refers to a ... ated field, or lookup <field name> . models.E016 : constraints/indexes/index_together/unique_together refers to f ... . models.W027 : <database> does not support check constraints. models.E028 : db_table <db_table> is used by mult ...
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https://man.plustar.jp/django/ref/checks.html
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- django.contrib.postgres — Django 4.0.6 ドキュメント 7782
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... istics Usage examples PostgreSQL specific database constraints ExclusionConstraint PostgreSQL specific query expr ... sing migrations Concurrent index operations Adding constraints without enforcing validation Full text search The ...
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https://man.plustar.jp/django/ref/contrib/postgres/index.html
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- Django 0.96 リリースノート — Django 4.0.6 ドキュメント 7554
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... onstraint name, while the database itself contains constraints named in the old form; this will cause the databas ... raise an error message about modifying nonexistent constraints. If you need to work around this, there are two me ... names, and use that as a guide to rename existing constraints in your database. Name changes in manage.py ¶ A fe ...
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https://man.plustar.jp/django/releases/0.96.html
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