How to replace values using column names ?

[seikenbary]

I am trying to convert the first table to the second table below. my reporting spits out duplicate rows for project for each individual on a project. If you pivot the person column, you can get a single column with each person's name and a 0/1 indicator for whether they are on the project, but i can't figure out the right combination of merging / splitting / unpivoting / pivoting / demoting headers to get to my desired final table. I also can't find the M language syntax to return a single column's name. 

I don't care what the fix method is, just want the right output using Power Query and not regular excel formulas. Any ideas? 

Table 1

Project	Person
A	Art
A	Bart
B	Tim
C	Sue
D	Larry
D	Barry
D	Garry

Table 2 - desired output

Project	People
A	Art, Bart
B	Tim
C	Sue
D	Larry, Barry, Garry

[Jimmy801]

Hello @seikenbary 

have you been able to solve the problem with the replies given?

If so, please mark it as solution (to help other users find useful content and to acknowledge the work of users that helped you)
Kudoes are nice too

All the best

Jimmy

[Jimmy801 · Accepted solution]

Hello @seikenbary 

just use Table.Group with Text.Combine if you want to have in power query. Otherwise use the syntax by @az38 

let
	Source = #table
	(
		{"Project","Person"},
		{
			{"A","Art"},	{"A","Bart"},	{"B","Tim"},	{"C","Sue"},	{"D","Larry"},	{"D","Barry"},	{"D","Garry"}
		}
	),
    Group = Table.Group(Source, {"Project"}, {{"TextCombine", each Text.Combine(_[Person], ", "), type text}})
in
	Group

Copy paste this code to the advanced editor to see how the solution works. If this solution fits your need, copy and past a part of it and implement it in your query, or I could create a custom function what makes it easier to apply if you are not used that much to power query.

If this post helps or solves your problem, please mark it as solution (to help other users find useful content and to acknowledge the work of users that helped you)
Kudoes are nice too

Have fun

Jimmy

[seikenbary]

This is beautiful, THANK YOU! works like a charm.

and double thanks for providing a non-dax solution. i'm aware of what dax is/some features but don't personally use/write it.

[az38]

Hi @seikenbary 

try this DAX technique.

create a calculated table

Table = 
SUMMARIZE (
    ADDCOLUMNS (
        'Table1';
        "Combined Value"; CONCATENATEX (
            FILTER (
                SUMMARIZE ( 'Table1'; 'Table1'[Project]; [Person] );
                [Project] = EARLIER ( 'Table1'[Project] )
            );
            'Table1'[Person];
            ", "
        )
    );
    [Project];
    [Combined Value]
)

do not hesitate to give a kudo to useful posts and mark solutions as solution

LinkedIn

[seikenbary]

many thanks for the quick response. i don't really know yet how to apply DAX but i'm sure this will help others! i got my query working with the combine + group code from the other response.