python - Django: Calculate the Sum of the column values through query

Question

I have a model

class ItemPrice( models.Model ):
     price = models.DecimalField ( max_digits = 8, decimal_places=2 )
     ....

I tried this to calculate the sum of price in this queryset:

items = ItemPrice.objects.all().annotate(Sum('price'))

what's wrong in this query? or is there any other way to calculate the Sum of price column?

I know this can be done by using for loop on queryset but i need an elegant solution.

Thanks!

Answer 1

You're probably looking for aggregate

from django.db.models import Sum

ItemPrice.objects.aggregate(Sum('price'))
# returns {'price__sum': 1000} for example