private boolean deleteTempTableColumnStats(String dbName, String tableName, String columnName)
      throws NoSuchObjectException {
    ColumnStatisticsObj deletedEntry = null;
    Map<String, ColumnStatisticsObj> ssTableColStats =
        getTempTableColumnStatsForTable(dbName, tableName);
    if (ssTableColStats != null) {
      deletedEntry = ssTableColStats.remove(columnName.toLowerCase());
    }
    if (deletedEntry == null) {
      throw new NoSuchObjectException("Column stats doesn't exist for db=" + dbName +
          " temp table=" + tableName);
    }
    return true;
  }
@param dbName actual database name
@param tblName actual table name or search pattern (for error message)
ql/src/java/org/apache/hadoop/hive/ql/metadata/SessionHiveMetaStoreClient.java