Examples of io.crate.planner.node.dql.MergeNode.outputTypes()

        TopNProjection topNProjection = new TopNProjection(
                10, 0, Arrays.<Symbol>asList(new InputColumn(1)), new boolean[] { false }, new Boolean[] { null });
        topNProjection.outputs(Arrays.<Symbol>asList(new InputColumn(0), new InputColumn(1)));


        mergeNode.projections(Arrays.asList(groupProjection, topNProjection));
        mergeNode.outputTypes(Arrays.<DataType>asList(DataTypes.STRING, DataTypes.LONG));


        Streamer<?>[] mapperOutputStreamer = new Streamer[] {
                new AggregationStateStreamer(countAggregation),
                DataTypes.STRING.streamer()
        };

                new InputColumn(1),
                new InputColumn(0)
        ));


        mergeNode.projections(Arrays.asList(groupProjection, topNProjection));
        mergeNode.outputTypes(Arrays.<DataType>asList(DataTypes.LONG, DataTypes.STRING));
        PlanNodeStreamerVisitor.Context context = visitor.process(mergeNode);
        assertSame(DataTypes.STRING.streamer(), context.outputStreamers()[1]);
        assertSame(DataTypes.LONG.streamer(), context.outputStreamers()[0]);
    }
}

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