Shift cells up/down in same column in Power Query

In my previous post I wrote about one interesting technique used by my colleague Zoltán Kaszaki-Krsjak.

Categoty_tmp = Table.AddColumn(Buffer, "Category_tmp", each Buffer[Category]{[ID2]}?),
// It helps to shift values of column [Category] one row upwards.

It is a trick that you most probably will not use in any of your solutions. However, worth to know how it works and how to do this without adding new columns.

“each Buffer[Category]{[ID2]}?” is just a function, so we can combine it with methods described in one of my posts (Transform Column Using Custom Function).

Here is the code.

Source = Excel.CurrentWorkbook(){[Name="Table1"]}[Content],
#"Duplicated Column" = Table.DuplicateColumn(Source, "Category", "Method1"),
#"Duplicated Column1" = Table.DuplicateColumn(#"Duplicated Column", "Category", "Method2"),
#"Duplicated Column2" = Table.DuplicateColumn(#"Duplicated Column1", "Category", "Method3"),
Buffer = Table.Buffer( #"Duplicated Column2" ),

Method1 = Table.FromRecords( Table.TransformRows( Buffer, each [Index = [Index],
    Category = [Category],
    Method1 = Buffer[Method1]{[Index]}?,
    Method2 = [Method2],
    Method3 = [Method3] ] ) ),

Method2 = Table.FromRecords( Table.TransformRows( Method1, (row) =>
    Record.TransformFields( row,
    {"Method2", each Buffer[Method2]{ row[Index] }? } ) ) ),
    // method offered by Miguel Escobar in comment to previous post

Method3 = Table.ReplaceValue(Method2, each [Method3], each Buffer[Method3]{[Index]}?, Replacer.ReplaceValue, {"Method3"})

File with methods is here.

But which method is faster?

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Transform Column using custom function in Power Query (part 2)

Year ago I wrote a post Transform table column using own function in Power Query. According to stats, it is quite popular topic, and I’m not surprised.

However, I think that old post is quite complex and too long. Advice should be shorter.

In addition, that post do not cover another very important scenario, when you need to transform column using value from another column.

Consider following case


  1. We need to Trim column [Name]
  2. We need to divide [Amount] by [Counter] (and do not want to add additional column)

Let’s do this.

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Decode Active Directory field UserAccountControl using Power Query

Recently my colleague had to identify inactive accounts in Active Directory and use this data in automated report on regular basis, to quickly react on new switched off users.

There are plenty of VBA solutions or Vbscripts that work with Active Directory and pull data from it.

However, for automated reports developed in Excel or Power BI it will be more convenient to use Power Query (Get & Transform) to get data directly from AD. In addition this helps to reduce mirroring of data.

Information about user status is stored in field UserAccountControl.

According to documentation on MSDN, field value is not very user friendly

“To disable a user’s account, set the UserAccountControl attribute to 0x0202 (0x002 + 0x0200). In decimal, this is 514 (2 + 512).”

Resulting value is a sum of different values of multiple properties.

E.g. what 2146 could mean?

Not easy to say when number is in decimal notation.

However, it is much easier if value of UserAccountControl is represented in binary string – of 0 and 1.

2146 = 2048 + 64 + 32 + 2 = > 100001100010

For example, if we need to check property ACCOUNTDISABLE, we only need to check second digit (from right).

Unfortunately, there is no standard function in Power Query that converts decimal number to binary notation, so I had to create own function.

As usually, it is available on Github:

// Number.ToBinaryString( 1026 )

// result: 10000000010

Function code is quite short, although it is recursive

When number is in binary notation, we can use Text.End, Text.Start function to get needed digit.

Just an idea. Can be used with Power BI alerts to unblock self-blocked users even before they call to IT, for audit, or with Microsoft Flow somehow…

Query folding and dynamic parameters in SQL Queries in Power Query

Before you start reading this article, I recommend you to go through very good post on Ken Puls’s blog – Pass Parameters to SQL Queries.

If it is fine for you to use native queries to database then most probably scenario described below is not so interesting for you.

Here I’ll talk about workaround allowing to use query folding and pass parameters in Power Query without building of native SQL query.

Level: intermediate

Task definition

Generate N workbooks with data models populated with limited data scope.

Then each workbook will be shared with certain group of people, that allowed to see only relevant set of data (e.g. department OPEX of particular subsidiary).

This is dictated by fact, that if you share Excel workbook with someone – user immediately has access to all info inside data model. So, I cannot create one common data model and hide slicer somewhere with activated department. I must prepare separated workbooks.


Data: Table with millions of records in SQL database – main data source for report (query folding required for obvious reasons)

Tools: Excel + Power Query + PowerPivot

Support data: table in Excel, defining datasets – data scopes, let’s call it Control Table

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Bulk extract data from SAP Business ByDesign

Post describes how Power Query (Get & Transform) can be used as ETL tool for SAP Business ByDesign (SAP ByD).

Purely Self-Service BI solution built on Excel for SAP Business ByDesign (SAP ByD).

Level: Advanced

How to extract master and operational data from SAP ByD using Power Query

Common information can be found in my previous posts, which I’d recommend to go through

Several ways of data extraction from SAP Business ByDesign

Query SAP Business ByDesign Web Services via Power Query

From all possible methods of data extraction, I chose Excel + Power Query as the most simple one for Modern Excel data analysts (non-IT pro).

What do we need to start this journey?

What can help?

Massive data extraction from SAP ByDesign

Let’s start from the most interesting – extract of large data volume from SAP ByD.

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Query SAP Business ByDesign Web Services via Power Query

In this post I would like to share my experience about work with web services using Power Query.

Unfortunately, some very important information is not available in data sources, e.g. Accounts Relationships and Pricing Conditions (price lists, customer specific discount lists etc.). Hope someday we will get this in reports.

However, currently, we can get this info only from

  • UI manually, almost impossible to do if you have X tenants and XXX customers with specific price lists
  • Web services – Jedi path, require knowledge and skills, or trustable tools, that can be checked

To our luck, with every new release we get more and more web services.

Basic idea of web service usage

  1. Make POST http request with XML
  2. Parse XML response

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Generation of custom Calendars in Power Query

In my previous post I described how to build relative date functions in Power Query

Associated topic is a generation of Calendar table for Excel Data Model (aka PowerPivot) where better to have only necessary period of time. And certain list of dates in some cases, e.g. ends of last X month if we analyse month results.

Assume that we have model with sales of previous month. Quite often in such model we don’t need dates of previous of future year and when we refresh such model in the beginning of new month our Calendar should be refreshed as well.

I took idea of calendar generation from post on http://powerpivotpro.com, thanks to Matt Allington.

Functions List.Dates and List.Generate can help us get initial list of dates and then extend it to useful calendar with long month names, short month names etc.

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Dynamic Table Headers in Power Query (SAP ByDesign, Odata)

Another good example of how awesome is Power Query. And again I reference to one of well-known bloggers, Ken Puls’s post describes situation when we have pivoted data and need to unpivot them then rename columns. Fortunalety, in this example not so many columns used and unpivoting + join “rename table” is a solution.
However, in common case when we have table with 20 columns and 100 000 rows (or 2 million) unpivoting will be a very bad decision.
I faced with this challenge when I started to work with Odata protocol in SAP Business ByDesign.


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Reporting and modeling for SAP Business ByDesign

Last two years I closely was working with SAP Business ByDesign reporting area. Have built data sources, web / Excel-based reports, models, print forms, broadcasts etc. In my responsibility six productive tenants: three of them in Baltics (Latvia, Lithuania, Estonia) and three in CIS (Kazakhstan, Ukraine, Belarus). I had to build starting package of reports and models to support legal requirements and business processes and worked on improvement of operational / strategic reports, consolidation of data on regional level etc. This post starts series about reporting for SAP Business ByDesign (further: SAP ByD or just ByD). I’m going to tell about problems I had to solve, some tricks and ideas. Hope this will help someone who is restricted in access rights as me and not an SAP ByD developer but going to building efficient reporting solution. So, let’s start. Continue reading