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What Is The Use Of Having Filters In Apache Pig?

Answer»

Just like the where clause in SQL, APACHE Pig has filters to extract records based on a given condition or PREDICATE. The record is passed down the pipeline if the predicate or the condition turn to true. Predicate contains various operators like ==, <=,!=, >=.

Example:-

X= load ‘inputs’ as(name,address)

Y = FILTER X by symbol matches ‘MR.*’;

Just like the where clause in SQL, Apache Pig has filters to extract records based on a given condition or predicate. The record is passed down the pipeline if the predicate or the condition turn to true. Predicate contains various operators like ==, <=,!=, >=.

Example:-

X= load ‘inputs’ as(name,address)

Y = filter X by symbol matches ‘Mr.*’;


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