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What is posexplode_outer in spark?

Spark posexplode_outer(e: Column) creates a row for each element in the array and creates two columns “pos’ to hold the position of the array element and the ‘col’ to hold the actual array value. Unlike posexplode, if the array or map is null or empty, posexplode_outer function returns null, null for pos and col columns.

What does the explode() function do in Spark?

In Spark, the explode(e: Column) function is used to explode or create array or map columns to rows\. When an array is passed to this function, it creates a new default column “col1” and it contains all array elements. When a map is passed, it creates two new columns – one for key and one for value – and each element in the map is split into a row.

How to explode a column into rows in Spark?

In Spark, you can use the explode function to explode or create array or map columns to rows. When an array is passed to this function, it creates a new default column "col1" and it contains all array elements.

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