{"title":"PostgreSQL-specifika databasfunktioner","version":"5.2","locale":"sv","docname":"ref/contrib/postgres/functions","url":"/sv/5.2/ref/contrib/postgres/functions/","canonical":"https://djangodocs.dev/sv/5.2/ref/contrib/postgres/functions/","summary":"Alla dessa funktioner är tillgängliga från modulen django.contrib.postgres.functions . RandomUUID Link to this heading # class RandomUUID Link to this definition #…","html":"

PostgreSQL-specifika databasfunktionerLink to this heading#

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Alla dessa funktioner är tillgängliga från modulen django.contrib.postgres.functions.

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RandomUUIDLink to this heading#

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\nclass RandomUUIDLink to this definition#
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Returnerar en version 4 UUID.

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Exempel på användning:

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Python console
>>> from django.contrib.postgres.functions import RandomUUID\n>>> Article.objects.update(uuid=RandomUUID())\n
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TransaktionNuLink to this heading#

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\nclass TransactionNowLink to this definition#
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Returnerar det datum och den tid på databasservern då den aktuella transaktionen startade. Om du inte är i en transaktion returnerar den datum och tid för den aktuella utsagan. Detta är ett komplement till django.db.models.functions.Now, som returnerar datum och tid för det aktuella uttalandet.

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Observera att endast det yttersta anropet till atomic() skapar en transaktion och därmed ställer in den tid som TransactionNow() kommer att returnera; nästlade anrop skapar sparpunkter som inte påverkar transaktionstiden.

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Exempel på användning:

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Python console
>>> from django.contrib.postgres.functions import TransactionNow\n>>> Article.objects.filter(published__lte=TransactionNow())\n<QuerySet [<Article: How to Django>]>\n
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