@Test
public void testTableChangeUpdatingExpression() throws Exception {
final Session s = getSession();
final CommandBuilder cb = new CommandBuilder(s);
s.getMsgBus().addHandler(TableEvent.TYPE, new TableEventHandler() {
@Override
public void onTable(TableEvent e) {
ObjectArray expr = ObjectArray.newInstance();
String alias = s.getFilters().get(0).getAlias();
expr.add(new ExpressionColumn(s, null, alias, "id"));