Showing results for 
Search instead for 
Did you mean: 
Frequent Visitor

Error pulling data from the PowerBI API



I want to schedule a workflow that appends data to my PowerBI dataset, by first taking the max date in the dataset, and then appending the results for every day after that to my dataset.


I'm currently struggling to read the data in the PowerBI dataset.


I've tried following this guide:


but that wasn't working for me. What I'm currently trying is this (in PowerShell)


$requestUrl = "{Workspace ID}/datasets/{Dataset ID}/executeQueries"


$requestBody = @"
{"queries" : [ {"query" : "MAXX('WaitTimes', 'WaitTimes'[UpdatedDate])"} ] , "serializerSettings" : {"includeNulls": true} }

$result = Invoke-PowerBIRestMethod -Method Post -Url $requestUrl -Body $requestBody


This code doesn't error, but it is returning a HTML document and not what I need. Does anyone have any advice?



Super User
Super User

You need to return a table. Your code is missing the EVALUATE statement.


NOTE: Power BI has no memory. You cannot append data to a regular dataset. Either use a push dataset, or use incremental refresh on a regular dataset.

Helpful resources

June 2022 update 768X460.jpg

Check it out!

Click here to read more about the June 2022 updates!

Power Platform Conf 2022 768x460.jpg

Join us for Microsoft Power Platform Conference

The first Microsoft-sponsored Power Platform Conference is coming in September. 100+ speakers, 150+ sessions, and what's new and next for Power Platform.

Power BI Dev Camp Session 23 768x460.jpg

Check it Out!

Mark your calendars and join us on Thursday, June 30 at 11a PDT for a great session with Ted Pattison!

June 20 episode 7 with aka link 768x460.jpg

The Power BI Community Show

Join us on June 20 at 11 am PDT when Kim Manis shares the latest on Azure Synapse analytics, the Microsoft Intelligent Data Platform, and notable Power BI Updates from Microsoft Build 2022.

Top Solution Authors