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?
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