Pig拉丁语:字符数组中的筛选号<5和>= 5(文本和数字)

Question

我如何过滤或分组那些5年以下和5年以上的。我对猪拉丁语很陌生。ID (例如，BUS2003 )应该保持原样。

输入数据

ID,Experience
BUS2003,More than 17 years teaching experience
BUS1303,2 years teaching experience
BUS4543,13 plus years of teaching experience; 4 plus years of corporate experience
BUS2103,4 year + 6 years in business
BUS2913,8 yrs teaching experience

我知道如何将数据加载到PigStorage或CSVloader中，但是，由于单词和数字在一起，我很难解决这些问题。

预期结果：

**Less than five years**
BUS1303,2 years teaching experience
BUS2103,4 year + 6 years in business

**Equal or greater than five years**
BUS2003,More than 17 years teaching experience
BUS4543,13 plus years of teaching experience; 4 plus years of corporate experience
BUS2913,8 yrs teaching experience

提前谢谢。

Answer 1

你必须提取数字，然后split.This会给你你想要的

A = LOAD 'input.txt' USING PigStorage(',') AS (a1:chararray,a2:chararray);
B = FOREACH A GENERATE a1,a2,REGEX_EXTRACT(a2,'(\\d*)',1) as exp:int;
C = SPLIT B INTO C1 IF B.exp < 5, C2 IF B.exp >= 5;
DUMP C1;
DUMP C2;