models from django.db.models.functions import Coalesce class PollManager(models.Manager): def with_counts(self): return self.annotate( num_responses=Coalesce(models.Count("response"), 0) ) class OpinionPoll(models order by query expressions by calling asc() or desc() on the expression: Entry.objects.order_by(Coalesce('summary', 'headline').desc()) asc() and desc() have arguments (nulls_first and nulls_last) that expressions Func() expressions are the base type of all expressions that involve database functions like COALESCE and LOWER, or aggregates like SUM. They can be used directly: from django.db.models import F, Func

from django.db.models.functions import Coalesce class PollManager(models.Manager): def with_counts(self): return self.annotate(num_responses=Coalesce(models.Count("response"), 0)) class OpinionPoll(models order by query expressions by calling asc() or desc() on the expression: Entry.objects.order_by(Coalesce("summary", "headline").desc()) asc() and desc() have arguments (nulls_first and nulls_last) that expressions Func() expressions are the base type of all expressions that involve database functions like COALESCE and LOWER, or aggregates like SUM. They can be used directly: from django.db.models import F, Func

django.db.models.functions import Coalesce class PollManager(models.Manager): def with_counts(self): return self.annotate( num_responses=Coalesce(models.Count("response"), 0) order by query expressions by calling asc() or desc() on the expression: Entry.objects.order_by(Coalesce('summary', 'headline').desc()) asc() and desc() have arguments (nulls_first and nulls_last) that expressions Func() expressions are the base type of all expressions that involve database functions like COALESCE and LOWER, or aggregates like SUM. They can be used directly: from django.db.models import F, Func

django.db.models.functions import Coalesce class PollManager(models.Manager): def with_counts(self): return self.annotate( num_responses=Coalesce(models.Count("response"), 0) order by query expressions by calling asc() or desc() on the expression: Entry.objects.order_by(Coalesce('summary', 'headline').desc()) asc() and desc() have arguments (nulls_first and nulls_last) that expressions Func() expressions are the base type of all expressions that involve database functions like COALESCE and LOWER, or aggregates like SUM. They can be used directly: from django.db.models import F, Func

Decimal("0")} Under the hood, the default argument is implemented by wrapping the aggregate function with Coalesce. 182 Chapter 3. Using Django Django Documentation, Release 5.1.2.dev20240916204136 3.2.4 Search models from django.db.models.functions import Coalesce class PollManager(models.Manager): def with_counts(self): return self.annotate(num_responses=Coalesce(models.Count("response"), 0)) class OpinionPoll(models order by query expressions by calling asc() or desc() on the expression: Entry.objects.order_by(Coalesce("summary", "headline").desc()) asc() and desc() have arguments (nulls_first and nulls_last) that

Decimal("0")} Under the hood, the default argument is implemented by wrapping the aggregate function with Coalesce. Search A common task for web applications is to search some data in the database with user input from django.db.models.functions import Coalesce class PollManager(models.Manager): def with_counts(self): return self.annotate(num_responses=Coalesce(models.Count("response"), 0)) class OpinionPoll(models order by query expressions by calling asc() or desc() on the expression: Entry.objects.order_by(Coalesce("summary", "headline").desc()) asc() and desc() have arguments (nulls_first and nulls_last) that

Decimal("0")} Under the hood, the default argument is implemented by wrapping the aggregate function with Coalesce. 182 Chapter 3. Using Django Django Documentation, Release 5.1.1.dev20240808115027 3.2.4 Search models from django.db.models.functions import Coalesce class PollManager(models.Manager): def with_counts(self): return self.annotate(num_responses=Coalesce(models.Count("response"), 0)) class OpinionPoll(models order by query expressions by calling asc() or desc() on the expression: Entry.objects.order_by(Coalesce("summary", "headline").desc()) asc() and desc() have arguments (nulls_first and nulls_last) that

Decimal("0")} Under the hood, the default argument is implemented by wrapping the aggregate function with Coalesce. Search A common task for web applications is to search some data in the database with user input from django.db.models.functions import Coalesce class PollManager(models.Manager): def with_counts(self): return self.annotate(num_responses=Coalesce(models.Count("response"), 0)) class OpinionPoll(models order by query expressions by calling asc() or desc() on the expression: Entry.objects.order_by(Coalesce("summary", "headline").desc()) asc() and desc() have arguments (nulls_first and nulls_last) that

Decimal("0")} Under the hood, the default argument is implemented by wrapping the aggregate function with Coalesce. 3.2.4 Search A common task for web applications is to search some data in the database with user models from django.db.models.functions import Coalesce class PollManager(models.Manager): def with_counts(self): return self.annotate(num_responses=Coalesce(models.Count("response"), 0)) class OpinionPoll(models order by query expressions by calling asc() or desc() on the expression: Entry.objects.order_by(Coalesce("summary", "headline").desc()) asc() and desc() have arguments (nulls_first and nulls_last) that

Decimal("0")} Under the hood, the default argument is implemented by wrapping the aggregate function with Coalesce. Search A common task for web applications is to search some data in the database with user input from django.db.models.functions import Coalesce class PollManager(models.Manager): def with_counts(self): return self.annotate(num_responses=Coalesce(models.Count("response"), 0)) class OpinionPoll(models order by query expressions by calling asc() or desc() on the expression: Entry.objects.order_by(Coalesce("summary", "headline").desc()) asc() and desc() have arguments (nulls_first and nulls_last) that