/**
 *  call-seq:
 *  getColumnScale(col)
 *
 *  Returns the scale of the specified column.  Scale is the total number of
 *  digits to the right of the decimal point in a number.  eg: 123.45 has a
 *  scale of 2.  "col" may be specified as the column name or number. */
static VALUE sqlrcur_getColumnScale(VALUE self, VALUE col) {