[CASE test_queryset]
from django.db import models

class Blog(models.Model):
    name = models.CharField(max_length=100)
    created_at = models.DateTimeField()

# QuerySet where second type argument is not specified shouldn't raise any errors
class BlogQuerySet(models.QuerySet[Blog]):
    pass

# Test that second type argument gets filled automatically
blog_qs: models.QuerySet[Blog]
reveal_type(blog_qs) # E: Revealed type is 'django.db.models.query.QuerySet[main.Blog, main.Blog]'


reveal_type(Blog.objects.in_bulk([1])) # E: Revealed type is 'builtins.dict[Any, main.Blog*]'
reveal_type(Blog.objects.in_bulk()) # E: Revealed type is 'builtins.dict[Any, main.Blog*]'
reveal_type(Blog.objects.in_bulk(['beatles_blog'], field_name='name')) # E: Revealed type is 'builtins.dict[Any, main.Blog*]'

# When ANDing QuerySets, the left-side's _Row parameter is used
reveal_type(Blog.objects.all() & Blog.objects.values()) # E: Revealed type is 'django.db.models.query.QuerySet[main.Blog*, main.Blog*]'
reveal_type(Blog.objects.values() & Blog.objects.values()) # E: Revealed type is 'django.db.models.query.QuerySet[main.Blog*, builtins.dict*[builtins.str, Any]]'
reveal_type(Blog.objects.values_list('id', 'name') & Blog.objects.values()) # E: Revealed type is 'django.db.models.query.QuerySet[main.Blog*, builtins.tuple*[Any]]'
reveal_type(Blog.objects.values_list('id', 'name', named=True) & Blog.objects.values()) # E: Revealed type is 'django.db.models.query.QuerySet[main.Blog*, typing.NamedTuple*]'
reveal_type(Blog.objects.values_list('id', flat=True) & Blog.objects.values()) # E: Revealed type is 'django.db.models.query.QuerySet[main.Blog*, Any]'

# .dates / .datetimes
reveal_type(Blog.objects.dates("created_at", "day")) # E: Revealed type is 'django.db.models.query.QuerySet[main.Blog*, datetime.date]'
reveal_type(Blog.objects.datetimes("created_at", "day")) # E: Revealed type is 'django.db.models.query.QuerySet[main.Blog*, datetime.datetime]'

qs = Blog.objects.all()
reveal_type(qs) # E: Revealed type is 'django.db.models.query.QuerySet[main.Blog*, main.Blog*]'
reveal_type(qs.get(id=1)) # E: Revealed type is 'main.Blog*'
reveal_type(iter(qs)) # E: Revealed type is 'typing.Iterator[main.Blog*]'
reveal_type(qs.iterator()) # E: Revealed type is 'typing.Iterator[main.Blog*]'
reveal_type(qs.first()) # E: Revealed type is 'Union[main.Blog*, None]'
reveal_type(qs.earliest()) # E: Revealed type is 'main.Blog*'
reveal_type(qs[0]) # E: Revealed type is 'main.Blog*'
reveal_type(qs[:9]) # E: Revealed type is 'django.db.models.query.QuerySet[main.Blog*, main.Blog*]'
reveal_type(qs.in_bulk()) # E: Revealed type is 'builtins.dict[Any, main.Blog*]'


values_qs = Blog.objects.values()
reveal_type(values_qs) # E: Revealed type is 'django.db.models.query.QuerySet[main.Blog*, builtins.dict[builtins.str, Any]]'
reveal_type(values_qs.all()) # E: Revealed type is 'django.db.models.query.QuerySet[main.Blog*, builtins.dict*[builtins.str, Any]]'
reveal_type(values_qs.get(id=1)) # E: Revealed type is 'builtins.dict*[builtins.str, Any]'
reveal_type(iter(values_qs)) # E: Revealed type is 'typing.Iterator[builtins.dict*[builtins.str, Any]]'
reveal_type(values_qs.iterator()) # E: Revealed type is 'typing.Iterator[builtins.dict*[builtins.str, Any]]'
reveal_type(values_qs.first()) # E: Revealed type is 'Union[builtins.dict*[builtins.str, Any], None]'
reveal_type(values_qs.earliest()) # E: Revealed type is 'builtins.dict*[builtins.str, Any]'
reveal_type(values_qs[0]) # E: Revealed type is 'builtins.dict*[builtins.str, Any]'
reveal_type(values_qs[:9]) # E: Revealed type is 'django.db.models.query.QuerySet[main.Blog*, builtins.dict*[builtins.str, Any]]'
reveal_type(values_qs.in_bulk()) # E: Revealed type is 'builtins.dict[Any, main.Blog*]'


values_list_qs = Blog.objects.values_list('id', 'name')
reveal_type(values_list_qs) # E: Revealed type is 'django.db.models.query.QuerySet[main.Blog*, builtins.tuple[Any]]'
reveal_type(values_list_qs.all()) # E: Revealed type is 'django.db.models.query.QuerySet[main.Blog*, builtins.tuple*[Any]]'
reveal_type(values_list_qs.get(id=1)) # E: Revealed type is 'builtins.tuple*[Any]'
reveal_type(iter(values_list_qs)) # E: Revealed type is 'typing.Iterator[builtins.tuple*[Any]]'
reveal_type(values_list_qs.iterator()) # E: Revealed type is 'typing.Iterator[builtins.tuple*[Any]]'
reveal_type(values_list_qs.first()) # E: Revealed type is 'Union[builtins.tuple*[Any], None]'
reveal_type(values_list_qs.earliest()) # E: Revealed type is 'builtins.tuple*[Any]'
reveal_type(values_list_qs[0]) # E: Revealed type is 'builtins.tuple*[Any]'
reveal_type(values_list_qs[:9]) # E: Revealed type is 'django.db.models.query.QuerySet[main.Blog*, builtins.tuple*[Any]]'
reveal_type(values_list_qs.in_bulk()) # E: Revealed type is 'builtins.dict[Any, main.Blog*]'


flat_values_list_qs = Blog.objects.values_list('id', flat=True)
reveal_type(flat_values_list_qs) # E: Revealed type is 'django.db.models.query.QuerySet[main.Blog*, Any]'
reveal_type(flat_values_list_qs.all()) # E: Revealed type is 'django.db.models.query.QuerySet[main.Blog*, Any]'
reveal_type(flat_values_list_qs.get(id=1)) # E: Revealed type is 'Any'
reveal_type(iter(flat_values_list_qs)) # E: Revealed type is 'typing.Iterator[Any]'
reveal_type(flat_values_list_qs.iterator()) # E: Revealed type is 'typing.Iterator[Any]'
reveal_type(flat_values_list_qs.first()) # E: Revealed type is 'Union[Any, None]'
reveal_type(flat_values_list_qs.earliest()) # E: Revealed type is 'Any'
reveal_type(flat_values_list_qs[0]) # E: Revealed type is 'Any'
reveal_type(flat_values_list_qs[:9]) # E: Revealed type is 'django.db.models.query.QuerySet[main.Blog*, Any]'
reveal_type(flat_values_list_qs.in_bulk()) # E: Revealed type is 'builtins.dict[Any, main.Blog*]'


named_values_list_qs = Blog.objects.values_list('id', named=True)
reveal_type(named_values_list_qs) # E: Revealed type is 'django.db.models.query.QuerySet[main.Blog*, typing.NamedTuple]'
reveal_type(named_values_list_qs.all()) # E: Revealed type is 'django.db.models.query.QuerySet[main.Blog*, typing.NamedTuple*]'
reveal_type(named_values_list_qs.get(id=1)) # E: Revealed type is 'typing.NamedTuple*'
reveal_type(iter(named_values_list_qs)) # E: Revealed type is 'typing.Iterator[typing.NamedTuple*]'
reveal_type(named_values_list_qs.iterator()) # E: Revealed type is 'typing.Iterator[typing.NamedTuple*]'
reveal_type(named_values_list_qs.first()) # E: Revealed type is 'Union[typing.NamedTuple*, None]'
reveal_type(named_values_list_qs.earliest()) # E: Revealed type is 'typing.NamedTuple*'
reveal_type(named_values_list_qs[0]) # E: Revealed type is 'typing.NamedTuple*'
reveal_type(named_values_list_qs[:9]) # E: Revealed type is 'django.db.models.query.QuerySet[main.Blog*, typing.NamedTuple*]'
reveal_type(named_values_list_qs.in_bulk()) # E: Revealed type is 'builtins.dict[Any, main.Blog*]'

[out]