docs: def select(self, table, cols, execute=True, select_type='SELECT', return_type=list):
          """Query every row and only certain columns from a table."""
          # Validate query type
          select_type = select_type.upper()
          assert select_type in SELECT_QUERY_TYPES
  
          # Concatenate statement
          statement = '{0} {1} FROM {2}'.format(select_type, join_cols(cols), wrap(table))
          if not execute:
              # Return command
              return statement
  
          # Retrieve values
          values = self.fetch(statement)
          return self._return_rows(table, cols, values, return_type)