NTT Data Pyspark Interview Question

Pyspark Interview questions recently asked in NTT Data interview. We need to add prefix to all the columns in the given dataframe. Lets see how we can achieve this by using Pyspark. Mentioning the dataframe details here data = [(101, 'IT', 1000), (102, 'HR', 900) columns = ["empid", "dept", "salary"] df = spark.createDataFrame(data, columns)] For more Azure Data Bricks interview questions. Check out our playlist.    • DataBricks and PySpark Interview Questions   Contact us: [email protected] Follow us on Instagram : instagram.com/cloudchallengers Facebook : facebook.com/cloudchallengers LinkedIn : linkedin.com/company/cloudchallengers