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Power Platform Community / Forums / Power Apps - Power Query / Problems combining two...
Power Apps - Power Query
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Problems combining two collections

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Posted on by Community member
I have the following collections
 
ClearCollect(
  colActualEventCount,
    ShowColumns(
       Filter(
         Jobs, StartDate >= dp_SearchStartDate && StartDate <= dp_SearchEndDate.SelectedDate
     ),
     Job_Id,
     Band_Id_fk,
     EventName,
     JobClassification_Id_fk,
     StartDate, 
     Status_Id_fk
   )
);
 
ClearCollect(
  colCeremonialBandUnitEvents,
    ShowColumns(
      Filter(UnitsToJobs, Value(dd_BandSelection.Selected.Band_Id) = Value(Band_Id_fk)
      && Unit_Id_fk = 149)
    ),
    Job_Id_fk,
    Band_Id_fk,
    Unit_Id_fk,
    UnitCode
);
 
The colActualEventCount has a one to many relationship with the colCeremonialBandUnitEvents collection.
 
How do I create the query that would perform an join of the colActualEventCount and the colCeremonialBandUnitEvents based on Job_Id = Job_Id_fk and return the columns Job_Id, Unit_Id, EventName, StartDate, JobClassification_Id_fk and Unit_Id_fk and UnitCode? 
 
Also, where can you recommend go place to learn about how to develop queries for Power Apps?
Categories:
General Comment
  • WarrenBelz Profile Picture
    WarrenBelz 148,294 Most Valuable Professional on at
    Problems combining two collections
    Offering another structure that may be also useful. 
    ClearCollect(
   colCombined
   RenameColumns(
      AddColumns(
         colCeremonialBandUnitEvents,
         EventName,
         LookUp(
            colActualEventCount As _Data,
            _Data.Job_Id_fk = Job_Id
         ).EventName,
         JobClassification_Id_fk,
         LookUp(
            colActualEventCount As _Data,
            _Data.Job_Id_fk = Job_Id
         ).JobClassification_Id_fk,
         StartDate,
         LookUp(
            colActualEventCount As _Data,
            _Data.Job_Id_fk = Job_Id
         ).StartDate,
         Status_Id_fk,
         UnitCode,
         LookUp(
            colActualEventCount As _Data,
            _Data.Job_Id_fk = Job_Id
         ).UnitCode
      ),
      Job_Id_fk,
      Job_ID,
      Unit_Id_fk,
      Unit_ID
   )
)
    ​​​​​​
  • Suggested answer
    StretchFredrik Profile Picture
    StretchFredrik 3,031 Super User 2025 Season 1 on at
    Problems combining two collections
    Hello,
     
    Not sure if this is what you are looking for, but give it a shot and get back to me if there is anything you would like to do differently or if delegation warning is a problem with your datesources. 
     
    ClearCollect(
    colJoinedEvents,
    ForAll(
        colActualEventCount As currentActualEvent,
        ForAll(
            Filter(colCeremonialBandUnitEvents, Job_Id_fk = currentActualEvent.Job_Id) As unit,
            {
                Job_Id: currentActualEvent.Job_Id,
                EventName: currentActualEvent.EventName,
                StartDate: currentActualEvent.StartDate,
                JobClassification_Id_fk: currentActualEvent.JobClassification_Id_fk,
                Unit_Id: unit.Unit_Id_fk,
                UnitCode: unit.UnitCode
            }
        )
    )
);
    If my response solved your issue, please mark it as ✅ Accepted Answer and give it a like.

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