column "" must appear in the GROUP BY clause or be used in an aggregate function

[徐军明]

Django 2.1.2, Postgres 10

Model:
class Product(models.Model):
product_id = models.AutoField("产品ID", primary_key=True)
...

class SpecItem(models.Model):
spec_id = models.AutoField(primary_key=True)
product = models.ForeignKey(Product, on_delete=models.CASCADE, related_name="product_specs", null=True)
price = models.FloatField("价格", default=0)
...

When exwcute
qs = Product.objects.filter(valid=1)
serializer = ProductSerializer(
qs.annotate(cnt=Count("product_specs"), min_price=Min("product_specs__price")).filter(cnt__gt=0)
.order_by("min_price")[offset:offset + limit],
context={"request": request},
many=True)

It says django.db.utils.ProgrammingError: column "prome_product.product_name" must appear in the GROUP BY clause or be used in an aggregate function

Can anyone help me?

[Kotha bondhu Mithun]

sorry friend....iam also try it

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[Adam Johnson]

This mailing list is for the development of Django itself, not for support. Use the django-users mailing list for that, or IRC #django on freenode, or a site like Stack Overflow.

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