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  1. Categories >> Software >> Big Data >> Hadoop >> Apache Pig
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What is Flatten and what it do in PIG?

Question Posted / Gopal Ji

Answer Posted / Gopal Ji

Flatten in Pig is a function that takes a nested data structure (array, tuple, map) as input and converts it into flat data structures (multiple rows with one column). This is particularly useful for processing complex data structures like JSON or XML. The FLATTEN operator allows you to access the elements of a nested data structure and perform operations on them.

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