} else {
for(int i = 0; i < mergedGroupSchema.size(); ++i) {
Schema.FieldSchema mergedFs = mergedGroupSchema.getField(i);
Schema.FieldSchema groupFs = groupBySchema.getField(i);
mergedFs.alias = groupFs.alias;
mergedGroupSchema.addAlias(mergedFs.alias, mergedFs);
}
}
Schema.FieldSchema groupByFs = new Schema.FieldSchema("group", mergedGroupSchema);
fss.add(groupByFs);