You could use a UDF pretty easily, something like this should work, the lastElement function could be changed to do pretty much any string manipulation you want.
import org.apache.spark.sql.functions.udf def lastElement(input: String) = input.split("/").last val lastElementUdf = udf(lastElement(_:String)) df.select(lastElementUdf ($"col1")).show() Ewan From: Bharathi Raja [mailto:raja...@yahoo.com.INVALID] Sent: 12 May 2016 11:40 To: Raghavendra Pandey <raghavendra.pan...@gmail.com>; Bharathi Raja <raja...@yahoo.com.invalid> Cc: User <user@spark.apache.org> Subject: RE: Spark 1.6.0: substring on df.select Thanks Raghav. I have 5+ million records. I feel creating multiple come is not an optimal way. Please suggest any other alternate solution. Can’t we do any string operation in DF.Select? Regards, Raja From: Raghavendra Pandey<mailto:raghavendra.pan...@gmail.com> Sent: 11 May 2016 09:04 PM To: Bharathi Raja<mailto:raja...@yahoo.com.invalid> Cc: User<mailto:user@spark.apache.org> Subject: Re: Spark 1.6.0: substring on df.select You can create a column with count of /. Then take max of it and create that many columns for every row with null fillers. Raghav On 11 May 2016 20:37, "Bharathi Raja" <raja...@yahoo.com.invalid<mailto:raja...@yahoo.com.invalid>> wrote: Hi, I have a dataframe column col1 with values something like “/client/service/version/method”. The number of “/” are not constant. Could you please help me to extract all methods from the column col1? In Pig i used SUBSTRING with LAST_INDEX_OF(“/”). Thanks in advance. Regards, Raja