@Test
public void testRunSqlTask() throws ROdpsException {

  List<String> ret = rodps.runSqlTask("create table if not exists odps_r_operator(id int);");
  assertNotNull(ret);
  assertEquals(0, ret.size());
  ret = rodps.runSqlTask("insert into table odps_r_operator select 1 from dual;");
  assertNotNull(ret);
  assertEquals(0, ret.size());
}