improved version

django/db/backends/base/creation.pyi

@@ -27,5 +27,5 @@ class BaseDatabaseCreation:
         suffix: None = ...
     ) -> None: ...
     def serialize_db_to_string(self) -> str: ...
-    def set_as_test_mirror(self, primary_settings_dict: Dict[str, Union[str, int, None, Dict[str, None]]]) -> None: ...
+    def set_as_test_mirror(self, primary_settings_dict: Dict[str, Optional[Union[str, int, Dict[str, None]]]]) -> None: ...
     def test_db_signature(self) -> Tuple[str, str, str, str]: ...

django/db/backends/base/operations.pyi

@@ -5,18 +5,27 @@ from datetime import (
     timedelta,
 )
 from decimal import Decimal
+from django.contrib.auth.models import (
+    Group,
+    User,
+)
+from django.contrib.sites.models import Site
 from django.core.management.color import Style
 from django.db import DefaultConnectionProxy
 from django.db.backends.base.base import BaseDatabaseWrapper
 from django.db.backends.sqlite3.base import DatabaseWrapper
 from django.db.backends.utils import CursorWrapper
+from django.db.models.base import Model
 from django.db.models.expressions import Expression
 from django.db.models.fields import Field
+from django.db.models.sql.compiler import SQLCompiler
 from typing import (
     Any,
     List,
     Optional,
+    Set,
     Tuple,
+    Type,
     Union,
 )
 
@@ -35,15 +44,15 @@ class BaseDatabaseOperations:
         decimal_places: Optional[int] = ...
     ) -> Optional[str]: ...
     def adapt_ipaddressfield_value(self, value: Optional[str]) -> Optional[str]: ...
-    def adapt_timefield_value(self, value: Optional[Union[time, datetime]]) -> Optional[str]: ...
-    def adapt_unknown_value(self, value: Union[Decimal, time, date, int]) -> Union[str, int]: ...
+    def adapt_timefield_value(self, value: Optional[Union[datetime, time]]) -> Optional[str]: ...
+    def adapt_unknown_value(self, value: Union[date, time, int, Decimal]) -> Union[str, int]: ...
     def autoinc_sql(self, table: str, column: str) -> None: ...
     def binary_placeholder_sql(self, value: Optional[memoryview]) -> str: ...
     def combine_expression(self, connector: str, sub_expressions: List[str]) -> str: ...
-    def compiler(self, compiler_name: str) -> Any: ...
+    def compiler(self, compiler_name: str) -> Type[SQLCompiler]: ...
     def convert_durationfield_value(
         self,
-        value: Optional[Union[float, int]],
+        value: Optional[float],
         expression: Expression,
         connection: DatabaseWrapper
     ) -> Optional[timedelta]: ...
@@ -70,7 +79,11 @@ class BaseDatabaseOperations:
     def savepoint_create_sql(self, sid: str) -> str: ...
     def savepoint_rollback_sql(self, sid: str) -> str: ...
     def sequence_reset_by_name_sql(self, style: None, sequences: List[Any]) -> List[Any]: ...
-    def sequence_reset_sql(self, style: Style, model_list: Any) -> List[Any]: ...
+    def sequence_reset_sql(
+        self,
+        style: Style,
+        model_list: Union[Set[Type[Model]], List[Type[Model]], Set[Type[Union[Group, User]]], List[Type[Site]]]
+    ) -> List[Any]: ...
     def set_time_zone_sql(self) -> str: ...
     def tablespace_sql(self, tablespace: str, inline: bool = ...) -> str: ...
     def time_extract_sql(self, lookup_type: None, field_name: None): ...

django/db/backends/base/schema.pyi

@@ -37,12 +37,12 @@ class BaseDatabaseSchemaEditor:
     def _create_index_name(
         self,
         table_name: str,
-        column_names: Union[Tuple[str, str, str], Tuple[str], List[str]],
+        column_names: Union[Tuple[str, str, str], List[str], Tuple[str]],
         suffix: str = ...
     ) -> str: ...
     def _create_index_sql(
         self,
-        model: Any,
+        model: Type[Model],
         fields: Any,
         *,
         name = ...,
@@ -52,7 +52,11 @@ class BaseDatabaseSchemaEditor:
         col_suffixes = ...,
         sql = ...
     ) -> Statement: ...
-    def _create_unique_sql(self, model: Any, columns: List[str]) -> Statement: ...
+    def _create_unique_sql(
+        self,
+        model: Type[Model],
+        columns: List[str]
+    ) -> Statement: ...
     def _delete_composed_index(
         self,
         model: Type[Model],
@@ -64,6 +68,6 @@ class BaseDatabaseSchemaEditor:
     def _digest(cls, *args) -> str: ...
     def _field_indexes_sql(
         self,
-        model: Any,
+        model: Type[Model],
         field: Field
     ) -> List[Statement]: ...