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Posted to dev@datafu.apache.org by "Russell Jurney (JIRA)" <ji...@apache.org> on 2014/09/11 22:20:34 UTC
[jira] [Created] (DATAFU-69) Create ChooseFieldByValue UDF - which,
given a field who's value contains a field name, and *, returns the value
of the field referenced by the field name
Russell Jurney created DATAFU-69:
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Summary: Create ChooseFieldByValue UDF - which, given a field who's value contains a field name, and *, returns the value of the field referenced by the field name
Key: DATAFU-69
URL: https://issues.apache.org/jira/browse/DATAFU-69
Project: DataFu
Issue Type: Bug
Affects Versions: 1.3.0
Reporter: Russell Jurney
define ChooseFieldByValue datafu.pig.util.ChooseFieldByValue();
data = LOAD 'input' using PigStorage(',') AS (fieldName:chararray, text1:chararray, text2:chararray, text3:chararray);
data2 = FOREACH data GENERATE fieldName, ChooseFieldByValue(fieldName,*) as result;
data3 = FOREACH data2 GENERATE fieldName, result;
STORE data3 INTO 'output';
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