EXISTS EXISTS operator will be used when we need to check if there is any row exists with a condition.…
To delete duplicate records in a DataFrame we can either use distinct or dropDuplicates method. But dropDuplicates method comes with…
While working with Big Data applications we might have used the methods withColumn and select(). They both are few of…
Spark has lot of performance enhancement techniques. Two of them are cache() and broadcast variables. Although they both used to…