Power Query – Pardaan.com

Returning Annotations From OData Sources In Power BI/Power Query

The Power Query OData.Feed function has an option called IncludeAnnotations that allows you to return annotation values from an OData data source. It’s not obvious how to use it though – even if you use this option when connecting, you won’t see the annotation values by…

4 August 2020

Data & Analysis

Adding Tooltips To Column Headers In The Power Query Editor In Power BI And Excel

Here’s something that will excite all you M nerds out there! Did you know you can make tooltips appear when you hover over column headers in a table in the Power Query Editor in either Power BI Desktop or Excel? Source : Chris Webb's BI Blog…

31 July 2020

Data & Analysis

Optimising The Performance Of Power Query Merges In Power BI, Part 3: Table.Join And SortMerge

When you merge data from two queries in the Power Query Editor the M code generated uses the Table.NestedJoin function. There is, however, another M function that can be used to merge data: Table.Join. The interesting thing about this function is that has a parameter that…

17 June 2020

Data & Analysis

Understanding The “The key didn’t match any rows in the table” Error In Power Query In Power BI Or Excel

One of the most common errors you’ll see when working with Power Query in Power BI or Excel is this: Expression.Error: The key didn’t match any rows in the table Source : Chris Webb's BI Blog Read more...

14 April 2020

Data & Analysis

Adding Your Own Messages To Power Query Query Diagnostics

A quick point: while the Power Query Query Diagnostics functionality is relatively new, it’s based on Power BI/Power Query trace logging that has been around for a while. I’ve just realised that this means you can use the Diagnostics.Trace M function that I blogged about back…

4 March 2020

Data & Analysis

An M Function To Help You Explore Power Query Diagnostics Data

Last week’s post showed an M function that took Power Query diagnostics data and formatted in a way that made it suitable for visualisation in a Power BI Decomposition Tree visual. This is great for understanding what’s going on at a high level, but by doing…

20 February 2020

Data & Analysis

Remove Duplicates and Keep the Last Record with Power Query

Today I was helping a customer with a problem that seemed quite simple on the surface. She had a data table containing historical customer sales orders (each customer has many orders on different dates). The objective was to filter this table in Power Query and just…

17 February 2020