5 files changed, 15 insertions, 12 deletions
diff --git a/lib/sqlalchemy/dialects/firebird/base.py b/lib/sqlalchemy/dialects/firebird/base.py
index 82861e30f..7fc914f1b 100644
--- a/lib/sqlalchemy/dialects/firebird/base.py
+++ b/lib/sqlalchemy/dialects/firebird/base.py
@@ -614,7 +614,7 @@ class FBExecutionContext(default.DefaultExecutionContext):
 
         return self._execute_scalar(
             "SELECT gen_id(%s, 1) FROM rdb$database"
-            % self.dialect.identifier_preparer.format_sequence(seq),
+            % self.identifier_preparer.format_sequence(seq),
             type_,
         )
 
diff --git a/lib/sqlalchemy/dialects/mssql/base.py b/lib/sqlalchemy/dialects/mssql/base.py
index 9d0e5d322..674d54179 100644
--- a/lib/sqlalchemy/dialects/mssql/base.py
+++ b/lib/sqlalchemy/dialects/mssql/base.py
@@ -17,7 +17,7 @@ External Dialects
 In addition to the above DBAPI layers with native SQLAlchemy support, there
 are third-party dialects for other DBAPI layers that are compatible
 with SQL Server. See the "External Dialects" list on the
-:ref:`dialect_toplevel` page. 
+:ref:`dialect_toplevel` page.
 
 .. _mssql_identity:
 
@@ -1560,7 +1560,7 @@ class MSExecutionContext(default.DefaultExecutionContext):
                     self.cursor,
                     self._opt_encode(
                         "SET IDENTITY_INSERT %s ON"
-                        % self.dialect.identifier_preparer.format_table(tbl)
+                        % self.identifier_preparer.format_table(tbl)
                     ),
                     (),
                     self,
@@ -1606,7 +1606,7 @@ class MSExecutionContext(default.DefaultExecutionContext):
                 self.cursor,
                 self._opt_encode(
                     "SET IDENTITY_INSERT %s OFF"
-                    % self.dialect.identifier_preparer.format_table(
+                    % self.identifier_preparer.format_table(
                         self.compiled.statement.table
                     )
                 ),
@@ -1630,7 +1630,7 @@ class MSExecutionContext(default.DefaultExecutionContext):
                 self.cursor.execute(
                     self._opt_encode(
                         "SET IDENTITY_INSERT %s OFF"
-                        % self.dialect.identifier_preparer.format_table(
+                        % self.identifier_preparer.format_table(
                             self.compiled.statement.table
                         )
                     )
@@ -1650,7 +1650,7 @@ class MSExecutionContext(default.DefaultExecutionContext):
         return self._execute_scalar(
             (
                 "SELECT NEXT VALUE FOR %s"
-                % self.dialect.identifier_preparer.format_sequence(seq)
+                % self.identifier_preparer.format_sequence(seq)
             ),
             type_,
         )
diff --git a/lib/sqlalchemy/dialects/mysql/base.py b/lib/sqlalchemy/dialects/mysql/base.py
index 063f750fa..c80ff3f19 100644
--- a/lib/sqlalchemy/dialects/mysql/base.py
+++ b/lib/sqlalchemy/dialects/mysql/base.py
@@ -988,9 +988,13 @@ from ...types import BLOB
 from ...types import BOOLEAN
 from ...types import DATE
 from ...types import VARBINARY
+from ...util import compat
 from ...util import topological
 
 
+if compat.TYPE_CHECKING:
+    from typing import Any
+
 RESERVED_WORDS = set(
     [
         "accessible",
@@ -1394,7 +1398,7 @@ class MySQLExecutionContext(default.DefaultExecutionContext):
         return self._execute_scalar(
             (
                 "select nextval(%s)"
-                % self.dialect.identifier_preparer.format_sequence(seq)
+                % self.identifier_preparer.format_sequence(seq)
             ),
             type_,
         )
@@ -3263,6 +3267,7 @@ class MySQLDialect(default.DefaultDialect):
         return parser.parse(sql, charset)
 
     def _detect_charset(self, connection):
+        # type: (Any) -> str
         raise NotImplementedError()
 
     def _detect_casing(self, connection):
diff --git a/lib/sqlalchemy/dialects/oracle/base.py b/lib/sqlalchemy/dialects/oracle/base.py
index 9344abeee..f9805abeb 100644
--- a/lib/sqlalchemy/dialects/oracle/base.py
+++ b/lib/sqlalchemy/dialects/oracle/base.py
@@ -1012,9 +1012,7 @@ class OracleCompiler(compiler.SQLCompiler):
         return self.process(vc.column, **kw) + "(+)"
 
     def visit_sequence(self, seq, **kw):
-        return (
-            self.dialect.identifier_preparer.format_sequence(seq) + ".nextval"
-        )
+        return self.preparer.format_sequence(seq) + ".nextval"
 
     def get_render_as_alias_suffix(self, alias_name_text):
         """Oracle doesn't like ``FROM table AS alias``"""
@@ -1441,7 +1439,7 @@ class OracleExecutionContext(default.DefaultExecutionContext):
     def fire_sequence(self, seq, type_):
         return self._execute_scalar(
             "SELECT "
-            + self.dialect.identifier_preparer.format_sequence(seq)
+            + self.identifier_preparer.format_sequence(seq)
             + ".nextval FROM DUAL",
             type_,
         )
diff --git a/lib/sqlalchemy/dialects/postgresql/base.py b/lib/sqlalchemy/dialects/postgresql/base.py
index f067e6537..7e821acde 100644
--- a/lib/sqlalchemy/dialects/postgresql/base.py
+++ b/lib/sqlalchemy/dialects/postgresql/base.py
@@ -2936,7 +2936,7 @@ class PGExecutionContext(default.DefaultExecutionContext):
         return self._execute_scalar(
             (
                 "select nextval('%s')"
-                % self.dialect.identifier_preparer.format_sequence(seq)
+                % self.identifier_preparer.format_sequence(seq)
             ),
             type_,
         )