Fixed #27481 -- Made SQLite return annotated boolean values as boolean, not integer.

Thanks Simon Charette for review.

django/db/backends/sqlite3/operations.py

@@ -209,6 +209,8 @@ class DatabaseOperations(BaseDatabaseOperations):
             converters.append(self.convert_decimalfield_value)
         elif internal_type == 'UUIDField':
             converters.append(self.convert_uuidfield_value)
+        elif internal_type in ('NullBooleanField', 'BooleanField'):
+            converters.append(self.convert_booleanfield_value)
         return converters
 
     def convert_datetimefield_value(self, value, expression, connection, context):
@@ -242,6 +244,9 @@ class DatabaseOperations(BaseDatabaseOperations):
             value = uuid.UUID(value)
         return value
 
+    def convert_booleanfield_value(self, value, expression, connection, context):
+        return bool(value) if value in (1, 0) else value
+
     def bulk_insert_sql(self, fields, placeholder_rows):
         return " UNION ALL ".join(
             "SELECT %s" % ", ".join(row)

tests/annotations/tests.py

@@ -6,7 +6,7 @@ from decimal import Decimal
 from django.core.exceptions import FieldDoesNotExist, FieldError
 from django.db.models import (
     BooleanField, CharField, Count, DateTimeField, ExpressionWrapper, F, Func,
-    IntegerField, Q, Sum, Value,
+    IntegerField, NullBooleanField, Q, Sum, Value,
 )
 from django.db.models.functions import Lower
 from django.test import TestCase, skipUnlessDBFeature
@@ -488,3 +488,15 @@ class NonAggregateAnnotationTestCase(TestCase):
             ],
             lambda c: (c.name, c.tagline_lower)
         )
+
+    def test_boolean_value_annotation(self):
+        books = Book.objects.annotate(
+            is_book=Value(True, output_field=BooleanField()),
+            is_pony=Value(False, output_field=BooleanField()),
+            is_none=Value(None, output_field=NullBooleanField()),
+        )
+        self.assertGreater(len(books), 0)
+        for book in books:
+            self.assertIs(book.is_book, True)
+            self.assertIs(book.is_pony, False)
+            self.assertIsNone(book.is_none)