The Axis Of Evil
Views, table variables and local variables are great in terms of programming principles.
But In terms of performance, they can be...
2013-03-25 (first published: 2013-03-20)
2,797 reads
Do You Know sys.dm_exec_text_query_plan?
One of the most fundamental DMF’s a SQL Server DBA should know is sys.dm_exec_query_plan.
This Dynamic Management Function allows us to see...
2013-03-19 (first published: 2013-03-12)
2,770 reads
On Trends And Proportions
Assuming you’ve been on earth lately, you probably heard the terms “Big Data”, “Hadoop”, “NoSQL” and so on.
Companies want to...
2013-03-05
552 reads
SQL Server Videos
About two weeks ago, I wrote about SQL Server Podcasts and why I love that medium so much.
Today, I want...
2013-02-26
1,042 reads
Things You Can Find In The Plan Cache
Two weeks ago I delivered a presentation called “Things You Can Find In The Plan Cache” to the israeli SQL Server...
2013-02-18
479 reads
SQL Server Podcasts
Photo credit: Digitalnative
About a year ago, I came across an online deal for a car stereo system with a USB...
2013-02-14
1,556 reads
Querying Execution Plan XML For Inaccurate Row Count Estimates
I read this awesome post by Joe Sack, titled “Detecting Cardinality Estimate Issues with sys.dm_exec_query_stats”.
I was amazed by the beauty...
2013-01-31
1,877 reads
What Queries From The Application Do To Your Plan Cache
Usually, a database is meant to serve some kind of application, and .Net applications have a few possible ways to query...
2013-01-09
1,172 reads
Small Changes Can Make A World Of Difference
SQL Server 2012 is best known for its bombastic new features: AlwaysOn, Columnstore indexes, Window functions enhancements, Extended Events enhancements,...
2012-09-30
1,113 reads
What I Expect From 24 Hours Of Pass
24 Hours of Pass is tomorrow. If you haven’t registered yet, now is a good time.
I expect to:
Have little to no...
2012-09-19
523 reads
Blogs
Advice I Like: Fear and Imagination
By Steve Jones
Fear is fueled by a lack of imagination. The antidote to fear is not...
Cloud Data Driven User Group 2025 – Slides & Scripts
The slidedeck and the SQL scripts for the session Indexing for Dummies can be...
Leading Through Change: Guiding Teams in Times of Uncertainty
By Chris Yates
Change is not a disruption in technology; it is the rhythm. New frameworks appear,...
Forums
Building AI Governance and Policies- First Steps
Comments posted to this topic are about the item Building AI Governance and Policies-...
Simple delete causes table scan on other tables with foreign key
Why is sql doing a full scan VS seeking on the index? I've included...
Show/Hide number of rows in table
We have a report that has multiple tables that list the top 15 performers...
Question of the Day
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