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Spark SQL Self Join Explained
Spark SQL Self Join Explained
Similar to SQL, Spark SQL also provides to Self join to join a DataFrame or table to itself, In this article, you will learn how to use a Self Join on multiple DataFrame tables with Scala example. Also, you will learn different ways to provide Join condition.
Before we jump into how to use self join expression, first, let’s create a DataFrame from emp dataset, On this dataset we have an…
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