REST api to issue DAX against dataset

[Anonymous]

Hi,

I tried to follow the exact same steps as described in the post below by MSFT and get the below error .Can someone please guide .

https://powerbi.microsoft.com/en-us/blog/announcing-the-public-preview-of-power-bi-rest-api-support-...

Note: I havent made any change in the PS script except the query/datasetID.I am logged into powerBI as "me" and see the error.

Error

Invoke-PowerBIRestMethod : One or more errors occurred.
At line:25 char:9
+ $result=Invoke-PowerBIRestMethod -Url $requestURL -Method Post -Body ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : WriteError: (Microsoft.Power...werBIRestMethod:InvokePowerBIRestMethod) [Invoke-PowerBIRestMethod], AggregateException
+ FullyQualifiedErrorId : One or more errors occurred.,Microsoft.PowerBI.Commands.Profile.InvokePowerBIRestMethod

[lbendlin]

Try a simple query first , EVALUATE a small table.

I had to completely uninstall all the Power BI Management cmdlets that have accumulated over the years and install the latest version.  you may want to do the same.

[Anonymous]

I tried a lot of things but i got a different error now and not sure of the reason.I was able to run dataset refresh and GET methods but unsuccessful with this "executing of DAX"

Error:

Error is constantly pointing to something wrong at the client end request and i am not sure what more to fix.

Here is my code:

I tried the same with refreshes endpoint as below and the service principal was able to refresh the dataset.

# refresh
$uri = "https://api.powerbi.com/v1.0/myorg/groups/$GroupId/datasets/$DatasetId/refreshes"
Invoke-RestMethod -Uri $uri –Headers $headers –Method POST –Verbose

Note: 

• I also used -Headers in the executequeries rest api but it didnt make a difference
• I registered an Azure app ,obtained the AppID,secretvalue,tenantID.I provided dataset.read and write permission for the app to call REST api.
• I created an AAD security group and added the service principal account into it as a member.
• Installed and imported all MicrosoftPowerBIMgmt modules in powershell
• Service principal is granted Admin on the dataset it is trying to query.
• Workspace is  V2 
• Tried to Login-PowerBI to use my creds and query the dataset but i get the same error.

[Anonymous]

Thanks for your help.I already have a very simple evaluate query ,but I will definitely try to uninstall and reinstall the pbi cmdlets as you mention.

[v-rzhou-msft]

Hi @Anonymous 

I think you can refer to this post with similar issue like yours. Try to move your dataset into V2 workspace. This user solved his issue by this way.

For reference: New API Endpoint with DAX Queries

Best Regards,
Rico Zhou

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