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Day: December 14, 2020

Using Koalas with Azure Databricks

Tomaz Kastrun continues a series on Azure Databricks:

So far, we looked into SQL, R and Python and this post will be about Python Koalas package. A special implementation of pandas DataFrame API on Apache Spark. Data Engineers and data scientist love Python pandas, since it makes data preparation with pandas easier, faster and more productive. And Koalas is a direct “response” to make writing and coding on Spark, easier and more familiar. Also follow the official documentation with full description of the package.

Click through for a quick demo.

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Automating Python Data Pipelines with SQL Agent

Joshua Higginbotham shows an old scheduling dog a new trick:

First off, we need to figure out what server we are going to run these from. For me, it was our SQL Servers dedicated to SSIS. Once this is figured out, we then need to do a custom install of Python. The key here, is to make sure when you install python, you install it across the server itself and not at the user level. Once installed, we can then move to SQL Agent to complete the rest of the work. You’ll need to make sure the service account that you are running SQL Agent with has both permissions to install libraries with python as well as permissions to the directory that your python scripts live. Once permissions are set we can start building out our SQL Agent Job.

Click through for the answer.

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Disk Performance Testing in 2020

Glenn Berry gives us some CrystalDiskMark results:

Recently, I built a new AMD mainstream desktop system with some existing parts that I had available. This system has six storage drives, with various levels of technology and performance. I thought it would be interesting to run CrystalDiskMark 7.0.0 on each of these drives. So, here are some quick comparative CrystalDiskMark results in 2020 from those six drives.

This system has a Gigabyte B550 AORUS MASTER motherboard, which is actually a great choice for a B550 motherboard, especially if you want extra storage flexibility. AMD B550 motherboards only have PCIe 4.0 support from the CPU, not from the B550 chipset.

Glenn gets some outstanding performance from one drive and reminds us once more of how beautiful SSD and M.2 drives are.

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On-Premises SQL Server is Still Relevant

John Morehouse does not abide by Betteridge’s Law of Headlines:

While I’m a firm believer that the cloud is not a fad and is not going away, it’s just an extension of a tool that we are already familiar with.  The Microsoft marketing slogan is “It’s just SQL” and for the most part that is indeed true.  However, that does not mean that every workload will benefit from being in the cloud.  There are scenarios where it does not make sense to move things to the cloud so let’s take a look at a few of them.

Read on for several reasons why the cloud might not be right for you.

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