diff --git a/pandas/io/sql.py b/pandas/io/sql.py
index 51888e5021d80..42f97f19456ab 100644
--- a/pandas/io/sql.py
+++ b/pandas/io/sql.py
@@ -1079,7 +1079,8 @@ def _sqlalchemy_type(self, col):
 
         return Text
 
-    def _get_dtype(self, sqltype):
+    @staticmethod
+    def _get_dtype(sqltype):
         from sqlalchemy.types import TIMESTAMP, Boolean, Date, DateTime, Float, Integer
 
         if isinstance(sqltype, Float):
@@ -1750,7 +1751,8 @@ def read_query(
             )
             return frame
 
-    def _fetchall_as_list(self, cur):
+    @staticmethod
+    def _fetchall_as_list(cur):
         result = cur.fetchall()
         if not isinstance(result, list):
             result = list(result)
@@ -1838,7 +1840,8 @@ def has_table(self, name, schema=None):
 
         return len(self.execute(query, [name]).fetchall()) > 0
 
-    def get_table(self, table_name, schema=None):
+    @staticmethod
+    def get_table(table_name, schema=None):
         return None  # not supported in fallback mode
 
     def drop_table(self, name, schema=None):