Using Power Query for data reconciliation across two sources with a common ID
There are many ways to reconcile data, especiially for those with a sql db at their disposal. We had data in two systems that was supposed to be the same but had some discrepancies so I took a stab at sorting through it using power query and landed on a remarkably straightforward approach.
In my case one source was XML and the other salesforce. Power query has some odd behaviors with how it handles some data types in xml files, but i will leave those out and hope XML will disappear and make the world a better and safer place.
This exercise assumes you have two queries in a single power query file - one for each data set, and the column headers are the same in both files. If needed, there are ways to use a mapping file to transform the column names, which others have written about.
There were two key features that make this work
1: Unpivot other columsn
in each query, right click...
