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powerapps Joining tables with multiple records

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Posted on by Anchal_D

Hi, I am trying to join 2 tables in powerapps and trying to get the true inner join data. below is my sample data -

suppose user placed an order with multiple products, I want to join 1 record from Order with Multiple records from product table.

Table Orders -

OrderID, OrderDate

1, 2018-01-21

2, 2017-01-31

Table products -

ProductName, orderID

ABC, 1

CDE, 1

SDW,1

LOJ,2

Final Result -

Order ID, OrderDate, ProductName

1,2018-01-21,ABC

1,2018-01-21,CDE

1,2018-01-21,SDW

2, 2017-01-31, LOJ

I tried Addcolumns using lookup but it only brings one value, is it possible in powerapps or do I need to go to View route?

Thanks in Advance

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Building Power Apps

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RezaDorrani 12,143 on at

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Hi @Anchal_D

AddColumns(ProductsTable,"OrderDate",LookUp(OrdersTable,OrderID=orderID).OrderDate)

where ProductsTable = name of products table
OrdersTable = name of orders table
OrderID = column in orders table
orderID = column in products table
OrderDate = column in orders table

Regards,
Reza Dorrani

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mdevaney 29,989 Moderator on at

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From what I can tell the relationship between your tables is one order with many different products. If this is the case could do a left table join instead of an inner join (products -> orders).

ClearCollect(myJoinedData,
AddColumns(Products,"OrderDate",LookUp(Orders,OrderId=Products[@OrderId],OrderDate)))

The resulting table will look like this...

—
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v-xida-msft on at

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Hi @Anchal_D ,

Do you want to join the Orders Table and Products Table based on Order ID value?

Could you please share a bit more about the AddColumns formula you used in your app?

I have made a test on my side, please consider take a try with the following workaround:

Add a Data Table control within your app, set the Items property to following:

AddColumns( ProductsTable, /* <-- Type ProductsTable here rather than Orders Table */ "OrderDate", LookUp(OrdersTable, OrderID = ProductsTable[@orderID], OrderDate) )

then enable corresponding columns within the Data Table control.

More details about the Disambiguation operator (@) in PowerApps, please check the following article:

https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/functions/operators#disambiguation-operator

Best regards,

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