{"title":"Tindakan perpindahan basisdata","version":"3.2","locale":"id","docname":"ref/contrib/postgres/operations","url":"/id/3.2/ref/contrib/postgres/operations/","canonical":"https://djangodocs.dev/id/3.2/ref/contrib/postgres/operations/","summary":"Semua operations ini tersedia dari modul django.contrib.postgres.operations. Anda dapat membuat tambahan PostgreSQL dalam basisdata anda menggunakan berkas…","html":"

Tindakan perpindahan basisdataLink to this heading#

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Semua operations ini tersedia dari modul django.contrib.postgres.operations.

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Membuat tambahan menggunakan perpindahanLink to this heading#

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Anda dapat membuat tambahan PostgreSQL dalam basisdata anda menggunakan berkas pemindahan. Contoh ini membuat sebuah tambahan hstore, tetapi prinsip-prinsip sama berlaku untuk tambahan-tambahan lain.

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Setel tambahan hstore dalam PostgreSQL sebelum tindakan pertama CreateModel atau AddField yang melibatkan HStoreField dengan menambahkan perpindahan dengan tindakan HStoreExtension. Sebagai contoh:

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Code
from django.contrib.postgres.operations import HStoreExtension\n\nclass Migration(migrations.Migration):\n    ...\n\n    operations = [\n        HStoreExtension(),\n        ...\n    ]\n
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The operation skips adding the extension if it already exists.

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For most extensions, this requires a database user with superuser privileges.\nIf the Django database user doesn't have the appropriate privileges, you'll\nhave to create the extension outside of Django migrations with a user that has\nthem. In that case, connect to your Django database and run the query\nCREATE EXTENSION IF NOT EXISTS hstore;.

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CreateExtensionLink to this heading#

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\nclass CreateExtension(name)Link to this definition#
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An Operation subclass which installs a PostgreSQL extension. For common\nextensions, use one of the more specific subclasses below.

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\nnameLink to this definition#
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Ini adalah argumen wajib. Nama dari tambahan untuk dipasang.

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BloomExtensionLink to this heading#

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\nclass BloomExtensionLink to this definition#
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Installs the bloom extension.

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BtreeGinExtensionLink to this heading#

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\nclass BtreeGinExtensionLink to this definition#
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Installs the btree_gin extension.

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BtreeGistExtensionLink to this heading#

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\nclass BtreeGistExtensionLink to this definition#
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Installs the btree_gist extension.

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CITextExtensionLink to this heading#

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\nclass CITextExtensionLink to this definition#
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Pasang tambahan citext.

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CryptoExtensionLink to this heading#

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\nclass CryptoExtensionLink to this definition#
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Pasang tambahan pgcrypto.

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HStoreExtensionLink to this heading#

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\nclass HStoreExtensionLink to this definition#
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Pasang tambahan hstore dan juga setel hubungan pada penterjemah data hstore untuk kemungkinan penggunaan dalam perpindahaan selanjutnya.

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TrigramExtensionLink to this heading#

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\nclass TrigramExtensionLink to this definition#
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Pasang tambahan pg_trm.

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UnaccentExtensionLink to this heading#

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\nclass UnaccentExtensionLink to this definition#
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Pasang tambahan unaccent.

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Managing collations using migrationsLink to this heading#

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If you need to filter or order a column using a particular collation that your\noperating system provides but PostgreSQL does not, you can manage collations in\nyour database using a migration file. These collations can then be used with\nthe db_collation parameter on CharField,\nTextField, and their subclasses.

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For example, to create a collation for German phone book ordering:

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Code
from django.contrib.postgres.operations import CreateCollation\n\nclass Migration(migrations.Migration):\n    ...\n\n    operations = [\n        CreateCollation(\n            'german_phonebook',\n            provider='icu',\n            locale='und-u-ks-level2',\n        ),\n        ...\n    ]\n
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\nclass CreateCollation(name, locale, *, provider='libc', deterministic=True)Link to this definition#
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Creates a collation with the given name, locale and provider.

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Set the deterministic parameter to False to create a\nnon-deterministic collation, such as for case-insensitive filtering.

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\nclass RemoveCollation(name, locale, *, provider='libc', deterministic=True)Link to this definition#
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Removes the collations named name.

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When reversed this is creating a collation with the provided locale,\nprovider, and deterministic arguments. Therefore, locale is\nrequired to make this operation reversible.

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Concurrent index operationsLink to this heading#

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PostgreSQL supports the CONCURRENTLY option to CREATE INDEX and\nDROP INDEX statements to add and remove indexes without locking out writes.\nThis option is useful for adding or removing an index in a live production\ndatabase.

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\nclass AddIndexConcurrently(model_name, index)Link to this definition#
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Like AddIndex, but creates an\nindex with the CONCURRENTLY option. This has a few caveats to be aware\nof when using this option, see the PostgreSQL documentation of building\nindexes concurrently.

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\nclass RemoveIndexConcurrently(model_name, name)Link to this definition#
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Like RemoveIndex, but removes the\nindex with the CONCURRENTLY option. This has a few caveats to be aware\nof when using this option, see the PostgreSQL documentation.

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