code: def load_table(self, table):
          
          table = self._valid_table_name(table)
          schema, table = self.parse_table_name(table)
          if not schema:
              schema = self.schema
              tables = self.tables
          else:
              tables = self.tables_in_schema(schema)
          if table in tables:
              return Table(self, schema, table)
          else:
              return None
docs: Loads a table. Returns None if the table does not already exist in db