The response of a JDBC call step, ie. the SQL result set, is actually an XML structure. So, as such it has inherently some characteristics of an array and you can create a loop and use xpath statements with index indicators (eg. /someTag1/someTag2/targetTag[0] ) to select a specific 'row' and subsequently get the data of that row.
You can validate that it is an xml structure by adding an XML XPath filter to your JDBC step and you will see the ResultSet XML tree. The workstation just visually presents the ResultSet XML tree in a table format.
So, would storing the xml (Store Step Response step) by sufficient enough for later reuse?
Cheers,
Danny