@Test public void testOptionalFromClause7() {
String sql = "SELECT b FROM t1, /*+ optional */ (t2 INNER JOIN t3 ON t2.a = t3.a)"; //$NON-NLS-1$
Query query = new Query();
Select select = new Select();
select.addSymbol(new ElementSymbol("b"));//$NON-NLS-1$
query.setSelect(select);
From from = new From();
UnaryFromClause ufc = new UnaryFromClause();
ufc.setGroup(new GroupSymbol("t2")); //$NON-NLS-1$