Hi all,
I have a worksheet with studynumbers of every patient and different dates of examination. I need the latest date of every patient. Is it possible to make such a program?

Example of the worksheet:

col A col B
Studyno. Date of exam
0004 13-12-2005
0004 24-01-2005
0004 16-01-2007
0004 25-10-2004
0004 07-01-2008
0004 19-01-2009
0006 07-12-2005
0006 25-10-2004
0006 23-01-2007
0006 15-11-2007
0006 26-01-2009
0007 07-12-2005
0007 25-10-2004
0007 24-01-2007
0007 07-11-2007
0007 19-01-2009
0008 07-12-2005
0008 25-10-2004
0008 24-01-2007
0008 07-11-2007
0008 19-01-2009
0009 27-10-2004
0009 26-01-2006
0009 24-01-2007
0009 21-11-2007
0009 19-01-2009
0011 25-10-2004
0011 24-01-2007
0011 07-11-2007
0011 12-12-2005
0011 20-01-2009
0012 06-12-2005
0012 27-10-2004
0012 28-02-2007
0012 22-01-2008
0012 02-02-2009


Thanks in advance,
Tanisman