如何在PIG中用硬编码值连接变量

Pig不支持双引号,因此需要将硬编码值从双引号更改为单引号。

X = FOREACH A GENERATE f1,f2,CONCAT('BIG',f3);

更新:
您可以使用 REPLACE 函数从输入中删除双引号。
下面的示例

数据

"apache","open","source"
"hadoop","map","reduce"
"pig","pig","latin"

PigScript:

A = LOAD 'data' USING PigStorage(',') AS (f1:chararray, f2:chararray, f3:chararray);
B = FOREACH A GENERATE REPLACE(f1,'"',''),REPLACE(f2,'"',''),CONCAT('BIG',REPLACE(f3,'"',''));
DUMP B

输出:

(apache,open,BIGsource)
(hadoop,map,BIGreduce)
(pig,pig,BIGlatin)