public void compareObjects(DBColumn col1, DBColumn col2, CompositeStructuralChange<?> tableChange) {
ColumnChange columnChange = new ColumnChange(col1);
// check column type, size and fractionDigits
DBDataType newType = col2.getType();
Integer newSize = col2.getSize();
Integer newFractionDigits = col2.getFractionDigits();
if (!col1.getType().equals(newType)
|| !NullSafeComparator.equals(col1.getSize(), newSize)
|| !NullSafeComparator.equals(col1.getFractionDigits(), newFractionDigits))