Oracle ASM: Migrating from UDEV devices to the ASM Filter Driver
This article looks at the way in which you can convert unmanaged devices to the ASM filter drive in an Oracle system.
2022-03-04
4,485 reads
databases
When to use CHAR, VARCHAR, or VARCHAR(MAX)
It’s important to choose the right datatypes when designing a database. Greg Larsen explains the differences between CHAR, VARCHAR and VARCHAR(MAX).
2022-02-14
Vertipaq optimization and its impact on columnstore compression
Vertipaq optimization is a critical component of the columnstore compression process. Edward Pollack explains how it works and what you need to know to manage it.
2022-02-11
Transformations by the Oracle Optimizer
To troubleshoot poorly performing SQL in Oracle, you must understand which transformations the optimizer has made. Jonathan Lewis demonstrates several possible optimizations for one query.
2022-02-09
SQL Server Monitoring Using Free Tools
You can do essential monitoring of SQL Server instances and databases with a FREE toolkit!
2022-01-28
7,062 reads
Quantifier predicates
Predicates in SQL are often complex and difficult to understand. In this article, Joe Celko explains the logic behind a few of the predicates: EXISTS, SOME, ANY and ALL.
2022-01-14
Ransomware: A world under threat
Ransomware has threatened many organizations over the past few years. In this article, Robert Sheldon explains the history of ransomware and what needs to be done to protect against it.
2021-11-22
Searching for Objects in SQL Server Databases
How to get the most out of SQL Search, a free database search tool for SQL Server Management Studio (SSMS) and Visual Studio that will locate database objects based on their names, columns, or text.
2021-11-19
Text Mining and Sentiment Analysis: Data Visualization in Tableau
Tableau is a popular visualization tool used by organizations around the world. In this article Sanil Mhatre demonstrates sentiment analysis with Tableau and Oracle data.
2021-11-08
Automating Extended Events data collection
It’s not difficult to set up an extended event session, but reviewing and saving the data can be complex. In this article, Edward Pollack demonstrates how to collect extended event data.
2021-11-03
Blogs
Learn Better: Pause to Review More
By Brian Kelley
If you want to learn better, pause more in your learning to intentionally review.
Azure SQL Managed Instance Next-Gen: Bring on the IOPS
By John
If you’ve used Azure SQL Managed Instance General Purpose, you know the drill: to...
SQL, MDX, DAX – the languages of data
By DataOnWheels
Ramblings of a retired data architect Let me start by saying that I have...
Forums
Connecting Power BI to SSAS and effective user not working
Hi everyone, Below is a consolidated summary of what we validated Architecture & data...
High Availability setup - has anyone seen this method?
Hi all, I recently moved to a new employer who have their HA setup...
Semantic Search in SQL Server 2025
Comments posted to this topic are about the item Semantic Search in SQL Server...
Question of the Day
Encoding URLs
I have this data in a SQL Server 2025 table:
CREATE TABLE Response ( ResponseID INT NOT NULL CONSTRAINT ResponsePK PRIMARY KEY , ResponseVal VARBINARY(5000) ) GOIf I want to get a value from this table that I can add to a URL in a browser, which of these code items produces a result I can use? See possible answers