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Question is: does Django AutoField create db_index on itself? (In docs I didn't find anything about that)

If not, how to do that?

Thanks!

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  • You can run python manage.py sqlindexes __your_app__ to check the indexes that syncdb will create. Commented Dec 19, 2011 at 0:19
  • I've checked, but there is no index for id field. Commented Dec 19, 2011 at 5:58

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An AutoField must have primary_key=True. A primary key is a unique index.

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By default Django applies id = models.AutoField(primary_key=True) (docs.djangoproject.com/en/dev/topics/db/models/…) however in postgres id fields do not appear to be indexed.
@alias51 see the postgresql docs: Adding a primary key will automatically create a unique B-tree index on the column or group of columns listed in the primary key, and will force the column(s) to be marked NOT NULL.
Thanks. Am I misreading PGAdmin in this question (stackoverflow.com/questions/63164377/…). I.e. does the primary key shown also infer the index? I am confused as I would expect an index to also be shown?
I've left an answer to your question - it appears that PGAdmin does not show the automatic primary key indexes.

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