Question

执行我的PIG脚本后：

FILE = LOAD 'PATH_FILE'  
    USING PigStorage(',') as 
      (ID:Long, 
      MUNICIPALITY:String,
          CITY:Int,
          COUNTRY:Int,
          COMPANY:Long,
          BRAND:Long,
          DATE:Chararray,
          STOCK_NAME:Chararray,
          STOCK_SIZE:Double,
          STOCK_AMOUNT:Double);

DATA = GROUP FILE BY (ID,MUNICIPALITY);

GRP_DATA = FOREACH DATA GENERATE group as STOCK_ID, FILE.COMPANY as COMPANY, FILE.BRAND as BRAND,FILE.DATE as DATE, FILE.STOCK_NAME AS STOCK_NAME, SUM(FILE.STOCK_AMOUNT) as STOCK_AMOUNT;

RANKING = rank GRP_DATA by STOCK_NAME,COMPANY,BRAND;

STORE RANKING INTO 'PATH_DESTINATION USING PigStorage(',');

我得到了这个输出：

1,(7287026502032012,18),{(706)},{(101200010)},{(17286)},{(oz)},2.5

我如何使用PIG可以获得这一行：

 1,7287026502032012,18,706,101200010,17286,oz,2.5

可以退货吗？

非常感谢!!

Answer 1

您可以使用正则表达式删除所有(，)，{和}：

[(){}]+

请参阅regex demo。

在PIG中：

A = LOAD 'input.txt' as line;  
B = FOREACH A GENERATE REPLACE(line,'[(){}]+',''); 
dump B;

将字符串修改为CommaSeparated Line - Apache PIG

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