presto-hive/src/main/java/io/prestosql/plugin/hive/metastore/thrift/ThriftMetastoreUtil.java/ThriftMetastoreUtil/createDecimalStatistics
class ThriftMetastoreUtil:    private static ColumnStatisticsObj createDecimalStatistics(String columnName, HiveType columnType, HiveColumnStatistics statistics)
    {
        DecimalColumnStatsData data = new DecimalColumnStatsData();
        statistics.getDecimalStatistics().ifPresent(decimalStatistics -> {
            decimalStatistics.getMin().ifPresent(value -> data.setLowValue(toMetastoreDecimal(value)));
            decimalStatistics.getMax().ifPresent(value -> data.setHighValue(toMetastoreDecimal(value)));
        });
        statistics.getNullsCount().ifPresent(data::setNumNulls);
        toMetastoreDistinctValuesCount(statistics.getDistinctValuesCount(), statistics.getNullsCount()).ifPresent(data::setNumDVs);
        return new ColumnStatisticsObj(columnName, columnType.toString(), decimalStats(data));
    }