如何合并两个Django查询但保留结果？

from django.db import models

class Author(models.Model):
    name = models.CharField(max_length=100)

class Book(models.Model):
    title = models.CharField(max_length=100)
    author = models.ForeignKey(Author, on_delete=models.CASCADE)

authors = Author.objects.all()
books = Book.objects.all()

# 选择需要的字段
authors_qs = authors.values('name')
books_qs = books.values('title')

# 使用 union() 合并查询集
combined_qs = authors_qs.union(books_qs)

from django.db.models import Value

# 选择需要的字段并添加一个额外的字段
authors_qs = authors.values(name=F('name')).annotate(type=Value('author', output_field=models.CharField()))
books_qs = books.values(name=F('title')).annotate(type=Value('book', output_field=models.CharField()))

# 使用 union() 合并查询集
combined_qs = authors_qs.union(books_qs)

from itertools import chain

# 获取查询集
authors_qs = Author.objects.all()
books_qs = Book.objects.all()

# 使用 chain() 合并查询集
combined_qs = list(chain(authors_qs, books_qs))