@Test
public void testMulti() {

    Aggregate aggs = AggregateParser.parse("sum(a), avg(b)");
    assertAggregate(aggs.items()[0]);
    assertAggregate(aggs.items()[1], "bAvg", "avg", "b");
    aggs = AggregateParser.parse("sum(a) aa, avg(b) as b");
    assertAggregate(aggs.items()[0], "aa");
    assertAggregate(aggs.items()[1], "b", "avg", "b");
}