Question

查询：

records = LOAD 'input' using PigStorage(' ') as (id:int, name:chararray, desination:chararray, date:chararray, salary: long);

示例输入：

    (10102,neha,developer,14/02/13,32000)

    (10103,deva,admin,02/02/14,40000)

    (10102,neha,developer,01/01/14,45000)

    (10245,sasi,developer,01/01/14,20000)

    (10109,surya,manager,01/02/2014,56000)

    (10102,neha,developer,01/02/2014,45000)

    (10245,sasi,developer,02/01/2014,25000)

我想根据日期年份（非整个日期）过滤上述数据。

Answer 1

检查这是否适合您。

(2013,{(neha,developer,2013)})
(2014,{(deva,admin,2014),(neha,developer,2014),(sasi,developer,2014),(surya,manager,2014),(neha,developer,2014),(sasi,developer,2014)})

最终输出将是：

order flow: 2    2   2   2   2   2  2   2   2   2   2   2
time (mn) : 5   10  15  20  25  30  35  40  45  50  55  60
orders done: 1   2   3   5   6   7  8   10  11  12  14  15

如何访问Pig Latin中Date的每个元素？

1 个答案: