ImmutableList.copyOf(new SortOrder[] {SortOrder.ASC_NULLS_LAST}),
100);
Operator operator = operatorFactory.createOperator(driverContext);
MaterializedResult expected = resultBuilder(driverContext.getSession(), VARCHAR, VARCHAR, BIGINT, BOOLEAN, VARCHAR)
.row("a", "A2", 1, false, "A2")
.row("a", "B1", 2, true, "A2")
.row("a", "C2", 3, true, "A2")
.row("b", "A1", 1, true, "A1")
.row("b", "C1", 2, false, "A1")