public void test_hint() throws Exception {
String sql = "SELECT /*+FIRST_ROWS*/ * FROM T WHERE F1 = ? ORDER BY F2";
OracleLexer lexer = new OracleLexer(sql);
for (;;) {
lexer.nextToken();
Token tok = lexer.token();
switch (tok) {
case IDENTIFIER:
System.out.println(tok.name() + "\t\t" + lexer.stringVal());
break;