Power BI 101, What Should I Learn?

This is the second part of my new series of Power BI posts named Power BI 101. In the previous post, I briefly discussed what Power BI is. In this post, I look into one of the most confusing parts for those who want to start learning Power BI. Many people jump straight online and look for Power BI training courses which there are plenty out there. But which one is the right training course for you? Let’s find out.

What do you want to gain from learning Power BI?

Regardless of attending paid training courses or being a self-learner, the above question is one of the most important questions you might ask yourself before going to the next steps. The answer to this question dictates the sort of training you must look for. Your answer to the preceding question can be one or none of the following:

  • I am a graduate/student looking at the job market
  • I am a business analyst and I want to know how Power BI can help you with my daily job
  • I am a database developer and I want to learn more about business intelligence and data and analytics space
  • I am a non-Microsoft Business Intelligence developer and I want to start learning more about Microsoft offerings
  • I am a system admin and I have to manage our Power BI tenant
  • I am a data scientist and I want to know how I can use Power BI
  • I am just ciourious to see what Power BI can do for me

As mentioned, your answer might not be any of the above, but, thinking about your reason(s) for learning Power BI can help you to find the best way to learn and use Power BI more efficiently. You can spend time and money taking some online courses and get even more confused. You don’t want that do you?

So, whatever reason(s) you have in mind to learn Power BI, most probably you fall into one of the following user categories:

Think about your goal(s) and what you want to achieve by learning Power BI then try to identify your user category. For instance, if you are a student thinking of joining an IT company as a data and analytics developer, then your user category is most probably a Power BI Developer or a Contributor.

To help you find out your user category let’s see what the above user categories mean.

Power BI Developers

The Power BI Developers are the beating hearts of any Power BI development project. Regardless of the project you will be involved with, you definitely require to have a certain level of knowledge of the following:

  • Data preparation/ETL processes
  • Data warehousing
  • Data modelling/Star schema
  • Data visualisation

To be a successful Power BI developer you must learn the following languages in Power BI:

  • Power Query
  • DAX

Depending on the types of projects you will be involved in, you may require to learn the following languages as well:

  • Microsoft Visual Basic (for Paginated Reports)
  • Python
  • R
  • T-SQL
  • PL/SQL

As a Power BI developer, you will write a lot of Power Query and DAX expressions. Most probably you require to learn T-SQL as well. The following resources can be pretty helpful:

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Power BI 101, What is Power BI

Many people talk about Power BI, its benefits and common challenges, and many more want to learn Power BI, which is excellent indeed. But there are many misconceptions and misunderstandings amongst the people who think they know Power BI. In my opinion, it is a significant risk in using tools without knowing them, and using the technology is no different. The situation is even worse when people who must know the technology well don’t know it, but they think they do. These people are potential risks to the businesses that want to adopt Power BI as their primary analytical solution across the organisation. As a part of my day-to-day job, I communicate with many people interacting with Power BI. Amongst many knowledgeable users are some of those who confuse things pretty frequently, which indicates a lack of understanding of the basic concepts.
So I decided to write a series of Power BI 101 to explain the basics of the technology that we all love in simple language. Regardless of your usage of Power BI, I endeavour to help you know what to expect from Power BI. This is the first part of this series.

What is Power BI?

I do not frequently get the “What is Power BI” question from my customers, my website’s comments, or my students within the training courses. It is indeed a question that I often ask people. I usually ask the question to indicate people’s level of understanding on different occasions, such as when a friend wants to know more about Power BI, or in a job interview from a candidate who applied for a Power BI related role, or my students attending a training course. Depending on the context that I ask the question, the responses are often pretty different.

It is the general rule of thumb to know what a “thing” is before using it. The “What is X?” (and X is the name of a “thing”) is a broad question, so the answer is also broad. Therefore we usually need more digging to get a better understanding of the “thing”. 

In our case, the “thing” is Power BI, so the question is “What is Power BI?”. And the answer is:

“Power BI is the Business Analytics platform part of a larger SaaS platform called Power Platform offering from Microsoft.”

Now, let’s dig a bit more with two more questions:

  • What is a Data Platform?
  • What is Saas?

Let’s quickly answer those questions.

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Quick Tips: Enabling Modern Visual Styles on Old Reports in Power BI Desktop

Quick Tips: Enabling Modern Visual Styles on Old Reports in Power BI Desktop

Do you have an old report created in 2016? If you do, then you know that the visuals’ style was pretty different back then. If you don’t like to see all visuals in their old style where the headings overlap the other visuals and you don’t know how to switch the visuals to their modern style, then continue reading. The following screenshot is from a very old report I built for a Power BI demo in Feb 2016! Time flies mate!

Old Style Visuals in Power BI Desktop
Old Style Visuals in Power BI Desktop

If you are an old Power BI developer, you can clearly remember those days when we had many side-by-side slicers on the report canvas and sometimes it was hard to click a slicer because hovering over the visuals activates the visual frames and it is easy to mistakenly click a different visual.

The other issue with the old visual style is that the Visual Header options of the Visualisations pane from the Format tab are not available for traditional visuals.

Visual header options are not available for old style visual
Visual header options are not available for old-style visual

I see some developers don’t like the old visual style. It is interesting that when we work on an old report, even if we open the report in the latest version of Power BI Desktop, the visuals’ style remains the same and it doesn’t change if we add new visuals to a new page. Some developers go through a lot of pain to get the visuals to work in the modern style. I even know some developers copied all queries from the old file’s Power Query and pasted them to a new Power BI file. Then they used Tabular Editor to copy the tabular objects from the old report to the new one. And some even started to build everything from scratch. If you are one of those developers, be aware that there is a simple setting that can help to quickly switch all the old visuals to their new modern style.

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Integrating and Visualising Multiple Microsoft To Do Accounts with Power BI

Integrating and Visualising Multiple Microsoft To Do Accounts with Power BI

It’s been a while that I use Microsoft To Do to organise my daily tasks. From work-related tasks to buy groceries. While Microsoft To Do is super easy to use but there are some challenges in using it more efficiently, especially when you have multiple O365 accounts within different organisations. Here are some of the challenges I faced; you may face other challenges too:

  • The Microsoft To Do app for Windows devices is very user friendly with amazingly good features like the ability to add multiple To Do accounts. However, we currently have to select which account we would like to use and the app shows all our tasks within that specific account. This means we can not see all our tasks from all our accounts in a single place.
  • The Microsoft To Do app for iOS devices is also very handy to use, but it lacks adding multiple accounts. Hence we cannot see all our tasks from multiple O365 accounts on the app. 🙁
  • We can use the Tasks within the Microsoft Outlook desktop application (I used the Windows version) which is by far the most comprehensive one with tons of features. While we can see tasks from multiple accounts in a single place, it is a real challenge if I want to know which task is assigned to which account. Besides, it is really hard to answer some questions like, how many high-priority tasks I have for today or the week ahead. I know, we can group tasks, but, it is still not so intuitive.

For the above reasons, I searched for a product that can do all the above at once. After spending some hours, I thought, well, I have to do it myself.

With that, let’s go ahead and see how we can get the job done in Power BI.

Note:

This method is not working for Microsoft To Do using personal accounts such as Outlook, Hotmail or MSN. If anyone knows how to add those, please let us know in the comments section below this post.

This is a long post that took me a reasonable amount of time to write. So I added the following table of contents so you can quickly jump to a subject of your interest.

Table of Contents

How It Works

Microsoft Power BI is NOT a reporting tool only. We can connect to many data sources, mix and match the data, create data models and visualise the data. So it should be possible to connect to multiple To Do accounts, append the data, create a simple data model on top of that, and visualise the data to answer our questions or our customers’ questions. The Microsoft To Do data is accessible via the Microsoft Exchange Online connector available in Power BI. The rest depends on our requirements and what questions we would like to answer.

In my case, in which I am the end-user of the report, I would like to be able to know:

  • Today’s tasks: All tasks that their StartDate or DueDate is today or the Tasks without any StartDate and DueDate
    • Number of tasks
    • Number of important tasks
    • Tasks by mailbox
    • Tasks details
      • Task list
      • Task description
      • Status
      • Start date
      • Due date
      • A link to the task itself that I can update if I want to
  • All Tasks
    • All above plus
      • Number of open tasks
      • Number of completed tasks

You or your customer(s) might have different requirements, but once you understand how to get the To Do data from Microsoft Exchange Online and do some data explorations to find out what you are after, you’ll be good.

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