Thanks. I haven't used Django for ages, but do recall using annotate() in the past. At that time, I didn't need to worry about performance, so didn't look into

Thanks. I haven't used Django for ages, but do recall using annotate() in the past. At that time, I didn't need to worry about performance, so didn't look into what happens under the hood, i.e. whether the call generates more than one SQL query.