I am using Sansa stack to execute sparql queries on huge amount of data in HDFS .Sansa is a spark based framework that executes sparql queries on huge amount of data. My sparql query is having an assignment as below in it .
BIND(STRAFTER(str(?d), "#") as ?docid) .
But sansa is not able to do this conversion and the final output does not have the variable ?docid . Is there any other function similar to BIND available in sparql ?