@Override
    public Select select() {
        return select;
    }
@Test
    void testUnion() {
        QueryAnalyzerImpl analyzer = new QueryAnalyzerImpl(database,
                                                           "select name n from s_test t " +
                                                               "union select name n from s_test t");

        assertNotNull(analyzer.select().table.alias, "t");
        assertNotNull(analyzer.select().table.metadata.getName(), "s_test");

        assertNotNull(analyzer.select().getColumns().get("n"));

    }