Document QuerySet.difference(), intersection(), raw(), select_for_update() as unsupported #441
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| - :meth:`~django.db.models.query.QuerySet.raw` (use | ||
| :meth:`~django_mongodb_backend.queryset.MongoQuerySet.raw_aggregate` | ||
| instead) | ||
| - :meth:`~django.db.models.query.QuerySet.select_for_update` (acts as a no-op) |
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Maybe it can be implemented: https://www.mongodb.com/company/bloghow-to-select-for-update-inside-mongodb-transactions edit: I created INTPYTHON-822 - Add support for QuerySet.select_for_update().
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| - :meth:`extra() <django.db.models.query.QuerySet.extra>` | ||
| - :meth:`prefetch_related() <django.db.models.query.QuerySet.prefetch_related>` | ||
| - :meth:`~django.db.models.query.QuerySet.difference` |
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MongoDB has $setDifference and $setIntersection. Not sure if they could be used to emulate. @WaVEV Did this cross your radar when implementing support for union()?
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Yes, I remember we talked about that, but only union was a priority at that time. I think the difference could be handled with a $lookup for the inner query (a similar flow to unionWith) followed by a $match.
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I created INTPYTHON-823 Add support for QuerySet.intersection() and difference().
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