cancel
Showing results for 
Search instead for 
Did you mean: 
Reply
memphis11
Helper III
Helper III

Merge 2 Dataverse tables into one collection

Hello, everyone,

 

I have a question about merging two tables from Dataverse.


I create two collections based on certain values:

 

ClearCollect(mySCH;
ShowColumns(tbl_SCHSCHImport;
"kol__guid";
"kol__Surname";
"kol__class";
"kol__password"

));;

 

ClearCollect(myTEACHER;
ShowColumns(tbl_SCHTeacher;
"kol__subject";
"kol__teacher";
"kol__class"
));;

 

now i would like to merge both collections into one, and this based on the column kol__class

 

My attempt:

ClearCollect(myTable;
Ungroup(
DropColumns(
AddColumns(
myTEACHER;
"myGroupedColumn";
Filter(
mySCH;
kol__class=myTEACHER[@kol__class]
)
);
"kol__class"
);
"myGroupedColumn"
)
);;

 

Unfortunately I have the problem that my
values are not displayed in the new collection (myTable) with this formula

 

greetings

1 ACCEPTED SOLUTION

Accepted Solutions
poweractivate
Most Valuable Professional
Most Valuable Professional

@memphis11 

 

For you, try something like:

 

//pseudocode - not tested

//Create two collections
ClearCollect(mySCH;
ShowColumns(tbl_SCHSchuelerImport;
"kol__guid";
"kol__nachname";
"kol__vorname";
"kol__klasse";
"kol__anmeldename";
"kol__passwort"

));;

 

ClearCollect(myTEACHER;
ShowColumns(tbl_SCHZuordnungLehrer;
"kol__fach";
"kol__lehrer";
"kol__klasse"
));;

 
Clear(myTable);;

ForAll
(
    mySCH As TCH
    ;ForAll
    (
        myTEACHER As SCH  
        ;If(SCH.kol__klasse = TCH.kol__klasse;Collect(myTable;{kol__guid:SCH.kol__guid;kol__nachname:SCH.kol__nachname;kol__klasse:SCH.kol__klasse;kol__passwort:SCH.kol__passwort;kol__fach:TCH.kol__fach;kol__lehrer:TCH.kol__lehrer}))
    
    
    )
);

 

See if it helps @memphis11 

View solution in original post

11 REPLIES 11
poweractivate
Most Valuable Professional
Most Valuable Professional

@memphis11 

Supposing collections abcd and efc,

join_abcd.pngjoin_efc.png

and wanting abcdef joining on column "c" (with "c" being like kol__class in your case)

 

Use this formula:

 

ClearCollect(abcd,{a:1,b:2,c:3,d:4},{a:11,b:22,c:33,d:44});
ClearCollect(efc, {e:5,f:6,c:3}    ,{e:55,f:66,c:33});
ClearCollect
(
     abcdef
    ,ForAll
     (
         abcd As SCH
         ,With
         (
            {TCH:LookUp(efc,c=SCH.c)}
           ,{a:SCH.a,b:SCH.b,c:SCH.c,d:SCH.d,e:TCH.e,f:TCH.f}
         
         )
     )

);

 

The collection abcdef will look like this now:

join_abcdef.png

Working Sample msapp

 

have attached a working sample msapp file app_merge_abcdef.msapp if you would like to import a full, working example yourself for your convenience.

 

To use the sample msapp attached, follow these steps:

 

1) Download the msapp file attached to this post (it's at the bottom of this post), to Desktop or a folder of your choice, by clicking on it from this post.

2) Create a new, blank Power App Canvas App

3) Go to File -> Open -> Browse

poweractivate_1-1663263281543.png

 

4 ) Navigate to location of .msapp file from Step 1, select it, and press the "Open" button.

5 ) The working example msapp file should load

6 ) Toggle between Screen2 and Screen1 once to initialize all the collections, if needed.
7 ) You can check File -> Collections to see the Collections preview

poweractivate_3-1663263552009.png

poweractivate_4-1663263613619.pngpoweractivate_5-1663263627921.png

 

 

In this sample app, the formula is in the OnVisible property of Screen1

 

See if it helps @memphis11 

poweractivate
Most Valuable Professional
Most Valuable Professional

@memphis11 

In your specific case, it would be something like this.

 

//pseudocode, not tested. 
//Beware of the list separator delimiters ; rather than , used here
//Beware of the chaining operator ;; rather than ; used here


ClearCollect(mySCH;
ShowColumns(tbl_SCHSCHImport;
"kol__guid";
"kol__Surname";
"kol__class";
"kol__password"

));;

ClearCollect(myTEACHER;
ShowColumns(tbl_SCHTeacher;
"kol__subject";
"kol__teacher";
"kol__class"
));;

//I am assuming the above code you originally gave works properly. 
//If not, you may need to adjust it.
//You can also try mock data instead of the above lines you gave, like
//ClearCollect(mySCH;{kol__guid:"SCH.kol__guid";kol__Surname:"SCH.kol__Surname";kol__class:"SCH.kol__class";kol__password:"SCH.kol__password"});;
//ClearCollect(myTEACHER;{kol__subject:"TCH.kol__subject";kol__teacher:"TCH.kol__teacher";kol__class:"TCH.kol__class"});;

ClearCollect
(
     myTable
    ;ForAll
     (
         mySCH As SCH
         ;With
         (
            {TCH:LookUp(myTEACHER,kol__class=SCH.kol__class)}
           ;{kol__guid:SCH.kol__guid;kol__Surname:SCH.kol__Surname;kol__class:SCH.kol__class;kol__password:SCH.kol__password;kol__subject:TCH.kol__subject;kol__teacher:TCH.kol__teacher}
         
         )
     )

);;
//if the above does not work, try removing the code you originally gave, and uncomment the two mock lines. If you see it appearing to work then, there might be an issue with the ClearCollect lines you originally gave, which you might need to adjust if that is the case.

 

You may need to adjust the code above if it contains errors, I cannot test your scenario specifically since it is using your Dataverse data set up in a specific way. If you prefer, you may want to start with my working, tested initial post, and adjust it from there.

 

In case the above really works even untested, then I provide the specific example above for your particular scenario, just in case it helps you further @memphis11 . If the above does work, it should give you the collection you want in myTable. 


memphis11
Helper III
Helper III

Hello,

unfortunately I still have a problem.


I'll send the code in German:


//Create two collections
ClearCollect(mySCH;
ShowColumns(tbl_SCHSchuelerImport;
"kol__guid";
"kol__nachname";
"kol__vorname";
"kol__klasse";
"kol__anmeldename";
"kol__passwort"

));;

 

ClearCollect(myTEACHER;
ShowColumns(tbl_SCHZuordnungLehrer;
"kol__fach";
"kol__lehrer";
"kol__klasse"
));;

 

//Zusammenführung der beiden Tabellen und deren Zuweisung zur Klasse
ClearCollect
(
myTable;
ForAll
(
mySCH As SCH
;With
(
{TCH:LookUp(myTEACHER;kol__klasse=SCH.kol__klasse)}
;

{kol__guid:SCH.kol__guid;kol__nachname:SCH.kol__vorname;kol__klasse:SCH.kol__klasse;kol__passwort:SCH.kol__passwort;kol__fach:TCH.kol__fach;kol__lehrer:TCH.kol__lehrer}

)
)

);;


The result in the collection looks like this:

memphis11_0-1663269859795.png

Unfortunately, the assignment does not match

memphis11
Helper III
Helper III

Collection1: (mySCH);

memphis11_6-1663270355877.png

 

Collection2: (myTeacher);

memphis11_5-1663270134970.png

 

poweractivate
Most Valuable Professional
Most Valuable Professional

@memphis11 

 

The only issue I see might be a minor one, that 

kol__nachname:SCH.kol__vorname

should say

kol__nachname:SCH.kol__nachname

 

Is this the only issue? You are indicating you might have another problem.

I do have a question:

 

You want to do a Join on kol__klasse.

However, you can have more than one student with the same kol__klasse?

 

For a Join, the foreign key must be unique.

If it's not unique, it looks like you are trying to do something else.

 

Since more than one student can be in the same class, (which would make sense), 

it looks like you are trying to do something other than a regular Join.

 

Could you specify what you are attempting to do exactly?

 

In the meantime, I'll see if I can presume what you might be doing. It looks more like you're trying to do some sort of data flattening, where you want any rows from your other table TCH that have the same Class on the outer table SCH, to then repeat the same row in SCH based on the augmented table, and use that augmented data on those rows. Just in case that is correct, I'll use that as the assumption and might provide a response shortly.

 

 

poweractivate
Most Valuable Professional
Most Valuable Professional

@memphis11 

 

Try this instead:

 

Use this for the OnVisible of Screen1:

ClearCollect(abcd,{a:1,b:2,c:3,d:4},{a:11,b:22,c:33,d:44});
ClearCollect(
             efc, {e:50,f:60,c:3}    ,{e:550,f:660,c:33}
                , {e:51,f:61,c:3}    ,{e:551,f:661,c:33}
            );
ClearCollect
(
     abcdef
    ,ForAll
     (
         efc As TCH
         ,With
         (
            {SCH:LookUp(abcd,c=TCH.c)}
           ,{a:SCH.a,b:SCH.b,c:SCH.c,d:SCH.d,e:TCH.e,f:TCH.f}
         
         )
     )

);

Working Sample msapp

 

have attached a working sample msapp file app2_merge_abcdef.msapp if you would like to import a full, working example yourself for your convenience.

 

To use the sample msapp attached, follow these steps:

 

1) Download the msapp file attached to this post (it's at the bottom of this post), to Desktop or a folder of your choice, by clicking on it from this post.

2) Create a new, blank Power App Canvas App

3) Go to File -> Open -> Browse

poweractivate_0-1663352958403.png

 

 

4 ) Navigate to location of .msapp file from Step 1, select it, and press the "Open" button.

5 ) The working example msapp file should load

6 ) Toggle between Screen2 and Screen1 once to initialize all the collections, if needed.
7 ) You can check File -> Collections to see the Collections preview


-----------------
Explanation:

 

In order to repeat the rows from the augmented table, simply switch the ForAll and With parts from my original example, starting with the augmented table efc (TCH) in the ForAll and the outer table (SCH) for the With  (instead of the outer table abcd (SCH) as the ForAll)

 

So instead of

 

//this version only works well if there is one TCH.c per SCH.c
ForAll
(
    abcd As SCH
    ,With
    (
       {TCH:LookUp(efc,c=SCH.c)}
      ,........
         
    )
)

 

Use:

//this version will repeat the corresponding row of SCH.c again based on each row of TCH
ForAll
(
    efc As TCH
    ,With
    (
       {SCH:LookUp(abcd,c=TCH.c)}
       ,............
         
    )
)

 

So then you get this:

2abcd.png

 

 

2efc.png

 

2abcdef.png

 

poweractivate
Most Valuable Professional
Most Valuable Professional

@memphis11 

 

Alright, now if you have repeated rows in kol__klasse in BOTH collections

 

Then you may want this:

 

merge3_abcdef.png

 

 

In the above example, SortByColumns(source,"c",Ascending) is used on each data table, to make it clearer.

 

If you want something like the above, use this formula:

 

 

ClearCollect(abcd,{a:10,b:20,c:3,d:40},{a:110,b:220,c:33,d:440}
                 ,{a:10,b:21,c:3,d:41},{a:111,b:221,c:33,d:441}
            );
ClearCollect(
             efc, {e:50,f:60,c:3}    ,{e:550,f:660,c:33}
                , {e:51,f:61,c:3}    ,{e:551,f:661,c:33}
            );

Clear(abcdef);

ForAll
(
    efc As TCH
    ,ForAll
    (
        abcd As SCH  
        ,If(SCH.c = TCH.c,Collect(abcdef,{a:SCH.a,b:SCH.b,c:SCH.c,d:SCH.d,e:TCH.e,f:TCH.f}))
    
    
    )
);

 

 

Working Sample msapp

 

have attached a working sample msapp file app3_merge_abcdef.msapp if you would like to import a full, working example yourself for your convenience.

 

To use the sample msapp attached, follow these steps:

 

1) Download the msapp file attached to this post (it's at the bottom of this post), to Desktop or a folder of your choice, by clicking on it from this post.

2) Create a new, blank Power App Canvas App

3) Go to File -> Open -> Browse

poweractivate_0-1663354291102.png

 

 

 

4 ) Navigate to location of .msapp file from Step 1, select it, and press the "Open" button.

5 ) The working example msapp file should load

6 ) Toggle between Screen2 and Screen1 once to initialize all the collections, if needed.
7 ) You can check File -> Collections to see the Collections preview

 

poweractivate
Most Valuable Professional
Most Valuable Professional

@memphis11 

 

For you, try something like:

 

//pseudocode - not tested

//Create two collections
ClearCollect(mySCH;
ShowColumns(tbl_SCHSchuelerImport;
"kol__guid";
"kol__nachname";
"kol__vorname";
"kol__klasse";
"kol__anmeldename";
"kol__passwort"

));;

 

ClearCollect(myTEACHER;
ShowColumns(tbl_SCHZuordnungLehrer;
"kol__fach";
"kol__lehrer";
"kol__klasse"
));;

 
Clear(myTable);;

ForAll
(
    mySCH As TCH
    ;ForAll
    (
        myTEACHER As SCH  
        ;If(SCH.kol__klasse = TCH.kol__klasse;Collect(myTable;{kol__guid:SCH.kol__guid;kol__nachname:SCH.kol__nachname;kol__klasse:SCH.kol__klasse;kol__passwort:SCH.kol__passwort;kol__fach:TCH.kol__fach;kol__lehrer:TCH.kol__lehrer}))
    
    
    )
);

 

See if it helps @memphis11 

Good morning, perfect, that works. Many Thanks

Helpful resources

Announcements

Update! June 13th, Community Ambassador Call for User Group Leaders and Super Users

Calling all Super Users & User Group Leaders     UPDATE:  We just wrapped up June's Community Ambassador monthly calls for Super Users and User Group Leaders. We had a fantastic call with lots of engagement. We are excited to share some highlights with you!    Big THANK YOU to our special guest Thomas Verhasselt, from the Copilot Studio Product Team for sharing how to use Power Platform Templates to achieve next generation growth.     A few key takeaways: Copilot Studio Cookbook Challenge:  Week 1 results are posted, Keep up the great work!Summer of Solutions:  Starting on Monday, June 17th. Just by providing solutions in the community, you can be entered to win tickets to Power Platform Community Conference.Super User Season 2: Coming SoonAll communities moving to the new platform end of July We also honored two different community members during the call, Mohamed Amine Mahmoudi and Markus Franz! We are thankful for both leaders' contributions and engagement with their respective communities. 🎉   Be sure to mark your calendars and register for the meeting on July 11th and stay up to date on all of the changes that are coming. Check out the Super User Forum boards for details.   We're excited to connect with you and continue building a stronger community together.   See you at the call!  

Win free tickets to the Power Platform Conference | Summer of Solutions

We are excited to announce the Summer of Solutions Challenge!    This challenge is kicking off on Monday, June 17th and will run for (4) weeks.  The challenge is open to all Power Platform (Power Apps, Power Automate, Copilot Studio & Power Pages) community members. We invite you to participate in a quest to provide solutions in the Forums to as many questions as you can. Answers can be provided in all the communities.    Entry Period: This Challenge will consist of four weekly Entry Periods as follows (each an “Entry Period”)   - 12:00 a.m. PT on June 17, 2024 – 11:59 p.m. PT on June 23, 2024 - 12:00 a.m. PT on June 24, 2024 – 11:59 p.m. PT on June 30, 2024 - 12:00 a.m. PT on July 1, 2024 – 11:59 p.m. PT on July 7, 2024 - 12:00 a.m. PT on July 8, 2024 – 11:59 p.m. PT on July 14, 2024   Entries will be eligible for the Entry Period in which they are received and will not carryover to subsequent weekly entry periods.  You must enter into each weekly Entry Period separately.   How to Enter: We invite you to participate in a quest to provide "Accepted Solutions" to as many questions as you can. Answers can be provided in all the communities. Users must provide a solution which can be an “Accepted Solution” in the Forums in all of the communities and there are no limits to the number of “Accepted Solutions” that a member can provide for entries in this challenge, but each entry must be substantially unique and different.    Winner Selection and Prizes: At the end of each week, we will list the top ten (10) Community users which will consist of: 5 Community Members & 5 Super Users and they will advance to the final drawing. We will post each week in the News & Announcements the top 10 Solution providers.  At the end of the challenge, we will add all of the top 10 weekly names and enter them into a random drawing.  Then we will randomly select ten (10) winners (5 Community Members & 5 Super Users) from among all eligible entrants received across all weekly Entry Periods to receive the prize listed below. If a winner declines, we will draw again at random for the next winner.  A user will only be able to win once overall. If they are drawn multiple times, another user will be drawn at random.  Individuals will be contacted before the announcement with the opportunity to claim or deny the prize.  Once all of the winners have been notified, we will post in the News & Announcements of each community with the list of winners.   Each winner will receive one (1) Pass to the Power Platform Conference in Las Vegas, Sep. 18-20, 2024 ($1800 value). NOTE: Prize is for conference attendance only and any other costs such as airfare, lodging, transportation, and food are the sole responsibility of the winner. Tickets are not transferable to any other party or to next year’s event.   ** PLEASE SEE THE ATTACHED RULES for this CHALLENGE**

Copilot Cookbook Challenge | Week 2 Results | Win Tickets to the Power Platform Conference

We are excited to announce the "The Copilot Cookbook Community Challenge is a great way to showcase your creativity and connect with others. Plus, you could win tickets to the Power Platform Community Conference in Las Vegas in September 2024 as an amazing bonus.   Two ways to enter: 1. Copilot Studio Cookbook Gallery: https://aka.ms/CS_Copilot_Cookbook_Challenge 2. Power Apps Copilot Cookbook Gallery: https://aka.ms/PA_Copilot_Cookbook_Challenge   There will be 5 chances to qualify for the final drawing: Early Bird Entries: March 1 - June 2Week 1: June 3 - June 9Week 2: June 10 - June 16Week 3: June 17 - June 23Week 4: June 24 - June 30     At the end of each week, we will draw 5 random names from every user who has posted a qualifying Copilot Studio template, sample or demo in the Copilot Studio Cookbook or a qualifying Power Apps Copilot sample or demo in the Power Apps Copilot Cookbook. Users who are not drawn in a given week will be added to the pool for the next week. Users can qualify more than once, but no more than once per week. Four winners will be drawn at random from the total qualifying entrants. If a winner declines, we will draw again at random for the next winner.  A user will only be able to win once. If they are drawn multiple times, another user will be drawn at random. Prizes:  One Pass to the Power Platform Conference in Las Vegas, Sep. 18-20, 2024 ($1800 value, does not include travel, lodging, or any other expenses) Winners are also eligible to do a 10-minute presentation of their demo or solution in a community solutions showcase at the event. To qualify for the drawing, templates, samples or demos must be related to Copilot Studio or a Copilot feature of Power Apps, Power Automate, or Power Pages, and must demonstrate or solve a complete unique and useful business or technical problem. Power Automate and Power Pagers posts should be added to the Power Apps Cookbook. Final determination of qualifying entries is at the sole discretion of Microsoft. Weekly updates and the Final random winners will be posted in the News & Announcements section in the communities on July 29th, 2024. Did you submit entries early?  Early Bird Entries March 1 - June 2:  If you posted something in the "early bird" time frame complete this form: https://aka.ms/Copilot_Challenge_EarlyBirds if you would like to be entered in the challenge.   Week 1 Results:  Congratulations to the Week 1 qualifiers, you are being entered in the random drawing that will take place at the end of the challenge. Copilot Cookbook Gallery:Power Apps Cookbook Gallery:1.  @Mathieu_Paris 1.   @SpongYe 2.  @Dhanush 2.   @Deenuji 3.  n/a3.   @Nived_Nambiar  4.  n/a4.   @ManishSolanki 5.  n/a5.    n/a   Week 2 Results:  Congratulations to the Week 2 qualifiers, you are being entered in the random drawing that will take place at the end of the challenge. Copilot Cookbook Gallery:Power Apps Cookbook Gallery:1. Kasun_Pathirana1. ManishSolanki2. cloudatica2. madlad3. n/a3. SpongYe4. n/a4. n/a5. n/a5. n/a

Celebrating the June Super User of the Month: Markus Franz

Markus Franz is a phenomenal contributor to the Power Apps Community. Super Users like Markus inspire others through their example, encouragement, and active participation.    The Why: "I do this to help others achieve what they are trying to do. As a total beginner back then without IT background I know how overwhelming things can be, so I decided to jump in and help others. I also do this to keep progressing and learning myself." Thank you, Markus Franz, for your outstanding work! Keep inspiring others and making a difference in the community! 🎉  Keep up the fantastic work! 👏👏   Markus Franz | LinkedIn  Power Apps: mmbr1606  

Your Moment to Shine: 2024 PPCC’s Got Power Awards Show

For the third year, we invite you, our talented community members, to participate in the grand 2024 Power Platform Community Conference's Got Power Awards. This event is your opportunity to showcase solutions that make a significant business impact, highlight extensive use of Power Platform products, demonstrate good governance, or tell an inspirational story. Share your success stories, inspire your peers, and show off some hidden talents.  This is your time to shine and bring your creations into the spotlight!  Make your mark, inspire others and leave a lasting impression. Sign up today for a chance to showcase your solution and win the coveted 2024 PPCC’s Got Power Award. This year we have three categories for you to participate in: Technical Solution Demo, Storytelling, and Hidden Talent.      The Technical solution demo category showcases your applications, automated workflows, copilot agentic experiences, web pages, AI capabilities, dashboards, and/or more. We want to see your most impactful Power Platform solutions!  The Storytelling category is where you can share your inspiring story, and the Hidden Talent category is where your talents (such as singing, dancing, jump roping, etc.) can shine! Submission Details:  Fill out the submission form https://aka.ms/PPCCGotPowerSignup by July 12th with details and a 2–5-minute video showcasing your Solution impact. (Please let us know you're coming to PPCC, too!)After review by a panel of Microsoft judges, the top storytellers will be invited to present a virtual demo presentation to the judges during early August. You’ll be notified soon after if you have been selected as a finalist to share your story live at PPCC’s Got Power!  The live show will feature the solution demos and storytelling talents of the top contestants, winner announcements, and the opportunity to network with your community.  It's not just a showcase for technical talent and storytelling showmanship, show it's a golden opportunity to make connections and celebrate our Community together! Let's make this a memorable event! See you there!   Mark your calendars! Date and Time: Thursday, Sept 19th Location: PPCC24 at the MGM Grand, Las Vegas, NV 

Tuesday Tip | Accepting Solutions

It's time for another TUESDAY TIPS, your weekly connection with the most insightful tips and tricks that empower both newcomers and veterans in the Power Platform Community! Every Tuesday, we bring you a curated selection of the finest advice, distilled from the resources and tools in the Community. Whether you’re a seasoned member or just getting started, Tuesday Tips are the perfect compass guiding you across the dynamic landscape of the Power Platform Community.   To enhance our collaborative environment, it's important to acknowledge when your question has been answered satisfactorily. Here's a quick guide on how to accept a solution to your questions: Find the Helpful Reply: Navigate to the reply that has effectively answered your question.Accept as Solution: Look for the "Accept as Solution" button or link, usually located at the bottom of the reply.Confirm Your Selection: Clicking this button may prompt you for confirmation. Go ahead and confirm that this is indeed the solution.Acknowledgment: Once accepted, the reply will be highlighted, and the original post will be marked as "Solved". This helps other community members find the same solution quickly. By marking a reply as an accepted solution, you not only thank the person who helped you but also make it easier for others with similar questions to find answers. Let's continue to support each other by recognizing helpful contributions. 

Top Solution Authors
Top Kudoed Authors
Users online (4,399)