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Explain fullOuterJoin() operation in Apache Spark?

Question Posted / sangeeta maurya


Explain fullOuterJoin() operation in Apache Spark?..

Answer / Rakesh Kumar Maurya

fullOuterJoin() is a join operation in Spark that returns all records when there's a match between the two input datasets, and null values for missing matches. Unlike innerJoin(), it includes all rows from both input datasets.

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