def _PurgeTable(self, tableName):
    """
    Deletes all rows from given table without dropping table.

    Parameters
    ----------
      tableName : string
        Name of table.
    """
    goodlogging.Log.Info("DB", "Deleting all entries from table {0}".format(tableName), verbosity=self.logVerbosity)
    self._ActionDatabase("DELETE FROM {0}".format(tableName))