Database Fundamentals #31: Unique Constraints from the GUI
In the last few Fundamentals posts you were introduced to a couple of ways to limit and control the data stored in the tables in your database. A primary...
2022-02-28
16 reads
The Scary DBA
Azure Data Studio Intellisense
I recently saw a question about the Azure Data Studio Intellisense: “Why won’t intellisense in Azure Data Studio work with different schemas?” Immediately I thought, “Wait, it does.” But,...
2022-02-22
50 reads
Extended Events Session Properties
I like Extended Events and I regularly use the Session Properties window to create and explore sessions. I’m in the window all the time, noting it’s quirks & odd...
2022-03-02 (first published: 2022-02-15)
209 reads
SQL Server, PostgreSQL and the Future
This is just a quick note to talk about the future, mine, yours and this blog. First, I’m not abandoning SQL Server. I’m actively working on a revision of...
2022-02-09
37 reads
Query Your Statistics: dm_db_stats_properties
We’ve always been able to look at statistics with DBCC SHOW_STATISTICS. You can even tell SHOW_STATISTICS to only give you the properties, STAT_HEADER, or histogram, HISTOGRAM. However, it’s always...
2022-02-21 (first published: 2022-02-07)
408 reads
PostgreSQL Restore in Azure
I recently wrote an article about PostgreSQL restores (and by extension, backups) over on Simple-Talk. The restore process within PostgreSQL, without 3rd party involvement, can be a little tricky....
2022-02-14 (first published: 2022-02-03)
120 reads
Which Columns Are Looked Up?
A common issue in performance is the lookup, key or RID, but the question frequently asked is, which columns are looked up? You need to know in order to...
2022-02-07 (first published: 2022-01-24)
413 reads
Two Clustered Indexes?
Everyone knows that you only get a single clustered index, right? Wouldn’t it be great though if you could have two clustered indexes? Well, you can. Sort of. Let’s...
2022-01-31 (first published: 2022-01-18)
441 reads
Why Is “WHERE 1=0” Slow?
I saw a question the other day, questioning why they’re creation of temporary tables was so slow. What they were doing was (a much more complicated version of) this:...
2022-01-24 (first published: 2022-01-10)
874 reads
Identifying Recompile Causes
Strictly speaking, a recompile isn’t really a performance tuning problem. In fact, a lot of time, recompiles are desired because they reflect changes in statistics which are likely to...
2022-01-12 (first published: 2022-01-03)
266 reads
Blogs
Migrate datetime data to datetimeoffset with AT TIME ZONE
By Will Assaf
I recently reviewed, worked on, and added a similar example to the DATETIMEOFFSET Microsoft...
The Comprehensive Guide to Mastering Your SQL DBA Skills
Database administrators (DBAs) are the backbone of data-driven organizations. If you're looking to break...
Friday Basics: Authentication vs. Authorization
By Brian Kelley
Another security fundamentals topic is authentication versus authorization. For those who have a clear...
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The Backup File Extension
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Ingest and Retrieve data from an ADX Cluster Using Python
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The DBAccountant
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Question of the Day
The Backup File Extension
I run this command in SQL Server 2022. What is the extension of the backup file?
BACKUP DATABASE HerdofTwo TO DISK = 'HerdOfTwo_20240501'See possible answers