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Pig is also now a top-level Apache project that is closely associated with Hadoop.

Suppose you have one or more sources of input data and you need to perform a complex set of transformations to generate one or more collections of output data. Using Hive, you might be able to do this with nested queries (as we’ll see), but at some point it will be necessary to resort to temporary tables (which you have to manage yourself) to manage the complexity.

Pig is described as a data flow language, rather than a query language. In Pig, you wri...

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Cover of Programming Hive

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Introduction Pig