PySpark UDF Explained | Use Same UDF in PySpark, Scala & SQL
In this video, we’ll understand what is a UDF (User Defined Function) in PySpark and why it’s used. You’ll learn how to create, register, and use UDFs in PySpark, Scala, and SQL — along with best practices to make your Spark jobs faster and more efficient.
What you’ll learn:
🧠 What is a UDF (User Defined Function) and when to use it
⚙️ Why UDFs in Scala are preferred over Python UDFs
💡 Difference between PySpark functions vs UDFs
🧩 How to create a UDF in PySpark using regex (custom logic example)
🏗️ How to register a UDF so it can be used across PySpark, Scala & SQL
🚀 Performance impact — why Scala UDFs run faster than Python UDFs
💬 How to use registered UDFs directly in SQL queries
#pyspark #pysparktutorial #databricks #databrickstutorial