This script function returns the name of the table stored in a QVD file.
Syntax:
QvdTableName(filename)
Arguments:
-    filename: The name of a QVD file, if necessary including path.- absolute - Example: c:\data\ 
- relative to the QlikView document path. - Example: data\ 
- URL address (HTTP or FTP), pointing to a location on the Internet or an intranet. - Example: http://www.qlik.com 
 
Examples:
QvdTableName ('MyFile.qvd')
QvdTableName ('C:\MyDir\MyFile.qvd')