Press "Enter" to skip to content

Day: May 31, 2023

Sketching before Charting

Alex Velez tries a few ideas:

It’s important to note that there isn’t a particular finding or insight that needs to be emphasized here. Instead, the goal for this visual is to provide the data in a digestible format, which will be part of a regularly updated report. That way, physicians and researchers can easily monitor any changes in the observations. 

I was unsure of the best way to approach this task, so I started sketching.

Click through to get Alex’s thought process while building a chart in Excel.

Comments closed

Data Governance and Microsoft Fabric

Matthew Roche digs deeper into data governance in Microsoft Fabric:

One of the most underappreciated benefits of Power BI as a managed SaaS data platform has been the “managed” part. When you create a report, dataset, dataflow, or other item in Power BI, the Power BI service knows everything about it. Power BI is the authoritative system for all items it contains, which means that Power BI can answer questions related to lineage (where does the data used by this report come from?) and impact analysis (where is the data in this dataset used?) and compliance (who has permissions to access this report?) and more.

If you’ve ever tried to authoritatively answer questions like these for a system of any non-trivial scope, you know how hard it is. Power BI has made this information increasingly available to administrators, through logs and APIs, and the community has built a wide range of free and paid solutions to help admins turn this information into insights and action. Even more excitingly, Power BI keeps getting better and better even as the newer parts of Fabric seem to be getting all of the attention.

Comments closed

Troubleshooting an Occasionally Poorly Performing Query in Oracle

Jura Bratina looks at the numbers:

A client asked us to verify why an INSERT AS SELECT statement, which was part of a scheduled ETL job executing on a single instance V11.2 database running as a data warehouse, suddenly started to take longer than usual. The database doesn’t have the Diagnostic and Tuning license, so Statspack and an external 3rd party application are being used to monitor the performance.

Okay, so I like making fun of Oracle licensing as much as (well, more than) the next guy, but seriously, a Diagnostic and Tuning license? Anyhow, the post isn’t about Oracle’s quest to find a more efficient way to vacuum money out of your bank account, but instead a performance troubleshooting approach when performance is intermittently bad. Spoilers: noisy neighbors. It’s usually noisy neighbors.

Comments closed

SSMS 19.1 Startup Performance Improvements

Glenn Berry breaks out the stopwatch:

SSMS 18.X cold startup performance is a big issue for me, since I regularly have to start SSMS 18.X on various small VMs running on older, slower server-class processors. BTW, “cold startup” is the first time that a program is loaded into a process since the last reboot of the operating system, so nothing from that program is already loaded in memory.

The hero image alone convinced me to install 19.1.

Comments closed

The Value of QUOTENAME

Quoth Chad Callihan, “Occasionally more”:

QUOTENAME can be used to make sure database objects are valid in your query. Most of the time, objects like table names only contain valid characters, so there’s nothing to worry about. But nobody’s perfect. Let’s look at an example of what can happen when somebody creates a table with a forward slash in the name and see how QUOTENAME can be used to query against it.

QUOTENAME is also a good way of preventing SQL injection, though I still prefer appropriate use of exec sp_executesql in any case in which it’s possible to use.

Comments closed