changing attribute type from polynomial to Datetime makes all that attribute's value as null ("?")
hi...i m a beginner ...and stuck in importing dataset and changing proper attribute type.
while changing attribute type of date and time format from polynomial to Date time all the corresponding value of that attributes becomes null i.e "?"......
my attribute value is like say, 10/28/2013 16:04 and i set the date format as
can someone help me please?