"NAME"  (array-ref, read-only)
           Returns a reference to an array of field names for
           each column. The names may contain spaces but should
           not be truncated or have any trailing space. Note that
           the names have the letter case (upper, lower or mixed)
           as returned by the driver being used. Portable appli-
           cations should use "NAME_lc" or "NAME_uc".

             print "First column name: $sth->{NAME}->[0]\n";