Problem: How to explode the Array of Map DataFrame columns to rows using Spark. Solution: Spark explode function can be used to explode an Array of Map ArrayType(MapType) columns to…
Problem: How to explode Array of StructType DataFrame columns to rows using Spark. Solution: Spark explode function can be used to explode an Array of Struct ArrayType(StructType) columns to rows…
Spark ArrayType (array) is a collection data type that extends DataType class, In this article, I will explain how to create a DataFrame ArrayType column using Spark SQL org.apache.spark.sql.types.ArrayType class and applying…
In this article, I will explain the usage of the Spark SQL map functions map(), map_keys(), map_values(), map_contact(), map_from_entries() on DataFrame column using Scala example. Though I've explained here with Scala, a similar method could be…
Spark SQL StructType & StructField classes are used to programmatically specify the schema to the DataFrame and creating complex columns like nested struct, array and map columns. StructType is a…