hive 如何把USD24，217.45转化为twenty-four thousand and two hundred....这种英文格式

Hive 中可以使用 UDF（User-Defined Functions）来实现将数字转化为英文格式的功能。以下是一个示例 UDF 的代码实现：

import org.apache.hadoop.hive.ql.exec.UDF;
import java.text.DecimalFormat;

public class NumberToEnglish extends UDF {
    private static final String[] tensNames = {"", " ten", " twenty", " thirty", " forty", " fifty", " sixty", " seventy", " eighty", " ninety"};
    private static final String[] numNames = {"", " one", " two", " three", " four", " five", " six", " seven", " eight", " nine", " ten", " eleven", " twelve", " thirteen", " fourteen", " fifteen", " sixteen", " seventeen", " eighteen", " nineteen"};
    private static final String[] bigNames = {"", " thousand", " million", " billion"};

    public String evaluate(Double num) {
        if (num == 0) {
            return "zero";
        }

        DecimalFormat decimalFormat = new DecimalFormat("#.00");
        String formatted = decimalFormat.format(num);

        String[] parts = formatted.split("\\.");
        long dollars = Long.parseLong(parts[0]);
        int cents = Integer.parseInt(parts[1]);

        String dollarsInEnglish = convert(dollars);
        String centsInEnglish = convert(cents);

        String result = dollarsInEnglish + " dollars";
        if (cents != 0) {
            result += " and " + centsInEnglish + " cents";
        }

        return result.trim();
    }

    private static String convert(long num) {
        if (num == 0) {
            return "zero";
        }

        String prefix = "";
        if (num < 0) {
            num = -num;
            prefix = "negative";
        }

        String current = "";
        int place = 0;

        do {
            long n = num % 1000;
            if (n != 0) {
                String s = convertLessThanOneThousand((int) n);
                current = s + bigNames[place] + current;
            }
            place++;
            num /= 1000;
        } while (num > 0);

        return (prefix + current).trim();
    }

    private static String convertLessThanOneThousand(int num) {
        String current;

        if (num % 100 < 20) {
            current = numNames[num % 100];
            num /= 100;
        } else {
            current = numNames[num % 10];
            num /= 10;

            current = tensNames[num % 10] + current;
            num /= 10;
        }
        if (num == 0) {
            return current;
        }
        return numNames[num] + " hundred" + current;
    }
}

这个 UDF 接受一个 Double 类型的参数，然后将其转化为英文格式的字符串。在这个 UDF 中，我们使用了一个叫做 `convert()` 的函数来将数值转化为英文形式。这个函数将数值按照千位进行分组，然后对每一组的数值进行转化，最后将所有组的结果拼接起来。

例如，要将 USD24,217.45 转化为英文格式，可以使用如下的 HiveQL 语句：

SELECT NumberToEnglish(24217.45);

上面的语句将返回字符串 "twenty-four thousand two hundred seventeen dollars and forty-five cents"。