Avg not updating correctly

Since pickle compatibility errors can be difficult to diagnose, such as silently corrupted objects, a exists so that specialized query subclasses can reconstruct internal query state.

The value of the parameter is an opaque representation of that query state and is not part of a public API.

avg not updating correctly-11avg not updating correctly-48

However, it is safe (and fully supported) to pickle and unpickle the attribute’s contents as described here.

are only valid for the version of Django that was used to generate them.

A particular ordering is guaranteed only when ordering by a set of fields that uniquely identify each object in the results.

For example, if a Note that this is not quite the same as slicing from the end of a sequence in Python.

If you generate a pickle using Django version N, there is no guarantee that pickle will be readable with Django version N 1.

Pickles should not be used as part of a long-term archival strategy.

Each foreign key you add will implicitly include all of its default orderings as well.

If a query doesn’t have an ordering specified, results are returned from the database in an unspecified order.

You can order by a field converted to lowercase with Warning Ordering is not a free operation.

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