How to Implement IF ELSE control logic in PIG Script

Question

We have requirement of executing script based on Condition like

IF (true) //execute this statement ELSE //execute this statement

I heard IF else is not present but it can be implement using "?". Any sample around using of trinary operator and execute pig query based on condition

Its been anwered here http://stackoverflow.com/questions/17669522/is-there-any-conditional-if-like-operator-in-apache-pig — nobody, Nov 25 '15 at 16:43

score 0 · Answer 1 · answered Nov 24 '15 at 22:16

0

You should use BinCond for that purpose.

For example:

A = LOAD 'your_data' USING PigStorage() AS (name:chararray);
B = FOREACH A GENERATE name, ( name == 'Bieber'? 1: 0) AS canadian_stars;

What we do is check if there is a string matches 'Bieber' in charraray name if yes we assign value 1, else 0.

Hope it helps!

answered Nov 24 '15 at 22:16

madbitloman

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Hi Madbitloman, Basically I'm looking for Individual statement just like IF else . I want to make use of IF else out side projection operation not within select project columns. – user145610 Nov 25 '15 at 08:34
the simplest way probably is to use bash and split your pig script – madbitloman Nov 25 '15 at 15:30
can u plz help with a sample or URL for reference – user145610 Nov 26 '15 at 08:37

How to Implement IF ELSE control logic in PIG Script

1 Answers1