Map Column Creation & Key Extraction

How can we construct a key-value MapType column from discrete parallel array columns?

Advanced⏱ 3 Minutes⭐ 870 XP

🤔 THE QUESTION

How can we construct a key-value MapType column from discrete parallel array columns?

💡 WHAT IS IT?

map_from_arrays() pairs keys and values from two array columns into a structured MapType.

🎯 WHAT IS IT USED FOR?

Dynamic property graphs, metadata lookup mappings, and key-value tag storage.

💻 EXAMPLE

df_mapped = df.withColumn("attributes", map_from_arrays(col("attr_keys"), col("attr_values")))

Practice typing production-grade PySpark code for Map Column Creation & Key Extraction.