10 Aug 2020 How to send emails with an SMTP server in Azure Databricks

A client asked if we could provide a simple form of monitoring on a part of a provided solution. For this particular source, our client asked us to send a simple email with record counts to a mailing list. No problem! Let's get to work

03 Aug 2020 Caching in Databricks?
Yes, you can!

Sometimes, Databricks can be a bit sluggish. Caching with, for instance, the Delta Cache Accelerated Worker can help you speed it up. We'll explain how it does that.

02 Jun 2020 The magic of Scalar-valued function inlining in SQL 2019

For some reason developers like stuffing their SQL with SVFs, and that... makes... it... so... slow. Are SVFs really that bad? And is scalar-valued function inlining useful at all? Let’s walk through it together and find out!

18 May 2020 XML fun on Azure SQL

While XML has been suitable as a SQL Server native datatype since SQL 2005, for one reason or the other it’s not often used - with only a very few working examples. This blog post is meant for T-SQL teams looking for a working XML example on SQL Server, including schema binding and XML indexes.

07 May 2020 When tempdb becomes permanentdb

What can go wrong when you combine memory-optimized tempdb with the resource governor? If you are using SQL Server 2019 you’ll see that one of the new features allows you to convert some tempdb system tables in in-memory OLTP.

24 Apr 2020 Een inleiding tot Partitioning, deel 1

Naar aanleiding van een migratieproject bij een van onze klanten, kreeg ik inspiratie om enkele zaken rond Partitioning uit te klaren. Partitioning is geen performance feature, maar is voornamelijk een methode om het management van grote tabellen te vergemakkelijken.

08 Apr 2020 Budget allocation: combining different levels of granularity in Power BI

Allocating budgets on a different level is not easy to manage in DAX. It was (and still is) a DAX struggle for me. This blog post will guide you through the different steps I took to easily manage the different granularities (and write easy DAX afterwards) by allocating budget on day level using Power Query.

17 Mar 2020 Kohera’s Modern Data Platform: Choosing the model – Pt.1

Kohera’s Modern Data platform does not come with a canned data model by default. This makes the framework extremely flexible to adapt to a variety of project workflows, but it also means during the Analysis phase we will need to think about how to structure the data before continuing. A blogpost.

19 Feb 2020 The hidden gems of the function Web.Contents()

Some of our customers want us to import their data from a standard on-premises or cloud-based (Azure) SQL-database, others want us to import their data from a REST API. If ever, you’ll have to import data from a REST API, you’ll surely encounter some obstacles.

19 Feb 2020 Niets beter dan Coca-Cola

Kohera bestaat al 13 jaar, al die tijd staat Microsoft als leider in de rechterbovenhoek van Gartner’s Magic Quadrant voor Analytics en BI Platformen. Net daarom hebben we bij Kohera een bewuste keuze gemaakt voor Microsoft Power BI, omdat het een modern en krachtig BI platform is waarmee je meteen aan de slag kunt.

30 Jan 2020 Should I use serverless for all my Azure SQL Databases?

Azure SQL Database serverless is a new compute tier made for single databases. This new model automatically scales the compute based on the actual workload per second. This means that you only have to pay for the compute resources (memory & vCores) you use. But there's more...

15 Jan 2020 How to create a Time Table in Power BI in a few simple steps

In a previous blogpost, we already explained how to make a date table in Power BI with DAX. Besides the dates you can add extra properties for each date: year, month-names, weekday-names,... But what about hours and minutes? In this blog and video, we'll show you how to create time tables in Power BI.

07 Jan 2020 De Tijdloze 2019: de follow-up

31 december was het zo ver, we zaten aan de radio gekluisterd om de Tijdloze op de voet te volgen. Op plaats 93 noteerden we onze eerste voltreffer en hoe dichter we bij de top 10 kwamen, hoe beter onze voorspelling . Negen van de tien nummers uit de top 10 hadden we voorspeld en drie hiervan hadden de voorspelde ranking.

27 Dec 2019 De Tijdloze van StuBru: onze Power BI-voorspelling

Waar we vorige jaren begin januari in actie schoten, staken we nu reeds in december de handen uit de mouwen. Aan de hand van een predictieve analyse doen we een poging om De Tijdloze 2019 te voorspellen, niet enkel de top 3 maar de ganse lijst.

12 Dec 2019 Custom email notification in Azure Data Factory

Tired of logging on to Azure Data Factory every day and checking the status of your pipeline(s)? In this blog, Data Wizard Wout Cardoen shows you how to develop an automatic email that alerts you when a pipeline fails.

03 Dec 2019 Creating a Secure Databricks Environment

Azure Databricks is a cloud native (Big) Data analytics service, offered as a managed PaaS environment. It’s designed to hide the underlying distributed systems and networking complexity as much as possible from the end user, so you can focus on developing rather than having to stress over infrastructure management.

18 Nov 2019 Azure Synapse Analytics: Where Azure DWH, Spark & ADF meet

When I started to jump from DBA to Data Architect, I thought that these roles would diverge further and further until they became two separate roles and functions. The current evolution Microsoft launched proved me wrong though. Enter Azure Synapse Analytics.

30 Oct 2019 Prevent lock escalation on indexed views

Recently our data wizard Thomas Costers was at a customer who created an indexed view, which spanned multiple tables as part of a release. Because you can't disable lock escalation for an indexed view as you can for a table, he went looking for another solution.