Django Full Course - 3.2 - Aggregation. Combining aggregations, annotations and filtering

In this lesson we will cover the topic of more complex Django aggregations/annotations along with filtering:
- Filter and then aggregate/annotate
- Annotate and filter by the result
- Annotate and then aggregate the result
- Filter inside annotation function
- Annotate and order by the result

[mitchymagic]

Thanks for this, I just used your annotate query filter example to resolve an issue I had with with showing only open issues attached to my reports model. 🎉