code: def __run_sql_file(self, filepath):
          
  
          with open(filepath, 'r') as delta_file:
              sql = delta_file.read()
              if self.variables:
                  self.cursor.execute(sql, self.variables)
              else:
                  self.cursor.execute(sql)
              self.connection.commit()
docs: Execute the sql file at the passed path
  
          Parameters
          ----------
          filepath: str
              the path of the file to execute