docs: def locks(self):
          """
          Display queries with active locks.
  
          Record(
              procpid=31776,
              relname=None,
              transactionid=None,
              granted=True,
              query_snippet='select * from hello;',
              age=datetime.timedelta(0, 0, 288174),
          )
  
          :returns: list of Records
          """
  
          return self.execute(
              sql.LOCKS.format(
                  pid_column=self.pid_column,
                  query_column=self.query_column
              )
          )