"extendedprice",
"discount",
"tax",
"shipdate");
TpchQuery1OperatorFactory tpchQuery1Operator = new TpchQuery1OperatorFactory(1);
HashAggregationOperatorFactory aggregationOperator = new HashAggregationOperatorFactory(
2,
ImmutableList.of(tpchQuery1Operator.getTypes().get(0), tpchQuery1Operator.getTypes().get(1)),
Ints.asList(0, 1),
Step.SINGLE,
ImmutableList.of(
aggregation(LONG_SUM, ImmutableList.of(new Input(2)), Optional.<Input>absent(), Optional.<Input>absent(), 1.0),
aggregation(DOUBLE_SUM, ImmutableList.of(new Input(3)), Optional.<Input>absent(), Optional.<Input>absent(), 1.0),