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Asked: 2026-05-22T12:27:09+00:00

Does Django automatically generate indexes for foreign keys, or does it just depend on

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Does Django automatically generate indexes for foreign keys, or does it just depend on the underlying DB policy ?

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  1. Editorial Team

    Django automatically creates an index for all models.ForeignKey columns.

    From Django documentation:

    A database index is automatically created on the ForeignKey. You can disable this by setting db_index to False. You may want to avoid the overhead of an index if you are creating a foreign key for consistency rather than joins, or if you will be creating an alternative index like a partial or multiple column index.

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