joining multiple result sets (example sets) and exporting them to a file at once
Hi guys,
I have N variables with their historical evolution...for each variable I build a linear/quantile regression with several predictors (day of week, day of month, holiday etc) to forecast daily values for those N variables one month ahead.
In the end I get N example sets (predicted) with the same number of rows/examples and the same ID...I would like to join them all at once and write them to an excel file, the problem is that the join operators supports only 2 example set while I need to join N at once.
Is there a way to do this without using join iteratively N-1 times?
Thanks a lot in advance

Here is a rough scheme of what I want to do:

I have N variables with their historical evolution...for each variable I build a linear/quantile regression with several predictors (day of week, day of month, holiday etc) to forecast daily values for those N variables one month ahead.
In the end I get N example sets (predicted) with the same number of rows/examples and the same ID...I would like to join them all at once and write them to an excel file, the problem is that the join operators supports only 2 example set while I need to join N at once.
Is there a way to do this without using join iteratively N-1 times?
Thanks a lot in advance

Here is a rough scheme of what I want to do:
