tmp = (List<String>) stack.pop(); af = (DataExpr.AggregateFunction) stack.pop(); stack.push(new DataExpr.GroupBy(af, tmp)); break; case ":rollup-drop":
tmp = (List<String>) stack.pop(); af = (DataExpr.AggregateFunction) stack.pop(); stack.push(new DataExpr.GroupBy(af, tmp)); break; case ":rollup-drop":