Tindakan perpindahan basisdataLink to this heading#

Membuat tambahan menggunakan perpindahanLink to this heading#

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.

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

from django.contrib.postgres.operations import HStoreExtension

class Migration(migrations.Migration):
    ...

    operations = [
        HStoreExtension(),
        ...
    ]

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

CreateExtensionLink to this heading#

class CreateExtension(name)Link to this definition#

An Operation subclass which installs a PostgreSQL extension. For common extensions, use one of the more specific subclasses below.

nameLink to this definition#

Ini adalah argumen wajib. Nama dari tambahan untuk dipasang.

BloomExtensionLink to this heading#

class BloomExtensionLink to this definition#

Installs the bloom extension.

BtreeGinExtensionLink to this heading#

class BtreeGinExtensionLink to this definition#

Installs the btree_gin extension.

BtreeGistExtensionLink to this heading#

class BtreeGistExtensionLink to this definition#

Installs the btree_gist extension.

CITextExtensionLink to this heading#

class CITextExtensionLink to this definition#

Pasang tambahan citext.

CryptoExtensionLink to this heading#

class CryptoExtensionLink to this definition#

Pasang tambahan pgcrypto.

HStoreExtensionLink to this heading#

class HStoreExtensionLink to this definition#

Pasang tambahan hstore dan juga setel hubungan pada penterjemah data hstore untuk kemungkinan penggunaan dalam perpindahaan selanjutnya.

TrigramExtensionLink to this heading#

class TrigramExtensionLink to this definition#

Pasang tambahan pg_trm.

UnaccentExtensionLink to this heading#

class UnaccentExtensionLink to this definition#

Pasang tambahan unaccent.

Concurrent index operationsLink to this heading#

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

class AddIndexConcurrently(model_name, index)Link to this definition#

Like AddIndex, but creates an index with the CONCURRENTLY option. This has a few caveats to be aware of when using this option, see the PostgreSQL documentation of building indexes concurrently.

class RemoveIndexConcurrently(model_name, name)Link to this definition#

Like RemoveIndex, but removes the index with the CONCURRENTLY option. This has a few caveats to be aware of when using this option, see the PostgreSQL documentation.