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J_Taylor
Advocate II
Advocate II

Power Query M - Merge count of rows into another table

As I am sure most issues with Power Query are, I know how to do it in Excel - but have no idea how to accomplish it in Power Query M. 

 

Just to be clear, I am using the Dataflows page from Dataverse (on the Power Apps page) to manipulate a Dataverse table. Using two tables, I am trying to create one new table.

 

The two tables are:

1. Students - a reference table with unique rows for each student.

2. Behaviour Issues - non-unique rows that list each time a student breaks the rules. I would liken it to monthly transactions at a register: some people come in more than once in a month and I am trying to count various common categories.

 

Students table:

J_Taylor_0-1665629019118.png

 

Behaviour Issues:

J_Taylor_1-1665629134577.png

 

I am aware of "Group By". However, this displays the data in its own table.

> Count of total of each student

J_Taylor_2-1665629207790.png

>Count of each student and issue1

J_Taylor_3-1665629239517.png

>Count of each student, issue1 and issue2 (I could have just done student and issue2, since issue2 is unique to issue1)

J_Taylor_4-1665629309150.png

 

I have created a sheet showing the desired outcome (attached and below).

J_Taylor_5-1665629953795.png

 

Not that it is much, but in Excel, this would be easy. For Total, I would just use CountIf looking for each time the student number occurred. The other columns would be CountIFS looking for the student number and each issue (referencing the headers). 

 

I don't know if "Group By" is part of the answer. I looked at "Merge Queries", but didn't get far enought with grouping to try. Hopefully, my explanation is clear. Any help to achieve my final table would be much appreciated.

1 REPLY 1
J_Taylor
Advocate II
Advocate II

I never found an answer for this. Instead, I linked the tables directly with PowerBI and manipulated them through there. I used DAX measures, Power Query (merge) and custom columns to get what I needed.

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