Introduction Instead of going straight into the topic of the Query Store, I would like to start this Stairway Series by mentioning a few performance tuning scenarios that are very common to production DBAs. I think most of us have been in one of these situations at some time: An application experiencing slowness after a […]
In this third part of this Power BI optimization series we look at how horizontal filtering and other changes can improve overall performance
DevOps continues to improve the way we build software and Steve has a good example in today's editorial.
Learn how to get started using a container to run PostgreSQL, or really any other RDBMS, including a gotcha to watch out for.
In this part of the PowerShell monitoring tips we look at how to capture the top queries that are consuming the most CPU from all monitored instances.
I was working on one of my clients server recently. This was during a normal maintenance monthly activity to reboot the database server every first weekend. I rebooted the machine, and as per the defined steps, I checked the SQL services after the reboot to ensure they were up. I verified all SQL Services and […]
A recent issue with malware and SQL Servers has Steve wondering if you would detect a new, and unapproved, login added to an instance.
You are invited to discover features of SQL Prompt that you may not even know exist. We will will walk you through the treasure map of SQL Prompt and show you where all the great features are buried.
Like any technology, AI can be used for evil instead of good. Shree Das explains several examples and what should be done to prevent the misuse of data.
Microsoft recently held the 2020 Ignite conference. Just like in previous years, there were many announcements introducing new services and expanded capabilities of existing ones, especially in Azure. Ahead of Ignite, I was asked to take a test drive of one of the new features, Azure Resource Mover (in preview). It’s easy to move a […]
The slidedeck and the SQL scripts for the session Indexing for Dummies can be...
By Chris Yates
Change is not a disruption in technology; it is the rhythm. New frameworks appear,...
No Scooby-Doo story is complete without footprints leading to a hidden passage. In SQL...
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Comments posted to this topic are about the item Checking Identities
The DBCC CHECKIDENT command is used when working with identity values. I have a table with 10 rows in it that looks like this:
TravelLogID CityID StartDate EndDate 1 1 2025-01-11 2025-01-16 2 2 2025-01-11 2025-01-16 3 3 2025-01-11 2025-01-16 4 4 2025-01-11 2025-01-16 5 5 2025-01-11 2025-01-16 6 6 2025-01-11 2025-01-16 7 7 2025-01-11 2025-01-16 8 8 2025-01-11 2025-01-16 9 9 2025-01-11 2025-01-16 10 10 2025-01-11 2025-01-16The docs for DBCC CHECKIDENT say this if I run with only the table parameter: "If the current identity value for a table is less than the maximum identity value stored in the identity column, it is reset using the maximum value in the identity column. " I run this code:
DELETE dbo.TravelLog WHERE TravelLogID >= 9
GO
DBCC CHECKIDENT(TravelLog, RESEED)
GO
INSERT dbo.TravelLog
(
CityID,
StartDate,
EndDate
)
VALUES
(4, '2025-09-14', '2025-09-17')
GO
What is the identity value for the new row inserted by the insert statement above? See possible answers