You can use a Java Snippet:
// determine file name from Row ID String fileName = "/your/path/" + ROWID + ".txt"; try (PrintStream ps = new PrintStream(new FileOutputStream(fileName))) { ps.print(c_yourColumn); } catch (IOException e) { throw new IllegalStateException( "IOException when writing to " + fileName, e); }
Alternatively, a loop using the Chunk Loop Start node, where you process row by row and pipe the filename to a CSV writer node through some flow variable should also work.