@Test
public void test_无索引条件() {

    TableNode table = new TableNode("TABLE1");
    table.query("SCHOOL = 2");
    build(table); // 无索引，默认选择主键做遍历
    Map<FilterType, IFilter> result = FilterSpliter.splitByIndex(FilterUtils.toDNFNode(table.getWhereFilter()),
        table);
    Assert.assertEquals(null, result.get(FilterType.IndexQueryKeyFilter));
    Assert.assertEquals("TABLE1.SCHOOL = 2", result.get(FilterType.IndexQueryValueFilter).toString());
    Assert.assertEquals(null, result.get(FilterType.ResultFilter));
}