Hello,
For a particular problem we were trying to parse a relatively large *.csv file with a recordmap. We are doing this from a BPL where we start with a REST call to acquire the file. This file needs a slight transformation which we tried in a DTL. However DTL's seem to be incapable of parsing larger files.
We see two different alternatives: The first one to write custom code to parse the file.And the second option to write SQL queries and to write the output to a csv file.