public TPCH9Plan(String dataPath, String extension, Map conf) {
// -------------------------------------------------------------------------------------
final List<Integer> hashPart = Arrays.asList(0);
final SelectOperator selectionPart = new SelectOperator(new LikePredicate(
new ColumnReference(_sc, 1), new ValueSpecification(_sc, COLOR)));
final ProjectOperator projectionPart = new ProjectOperator(new int[] { 0 });
final DataSourceComponent relationPart = new DataSourceComponent("PART", dataPath + "part"