One of the more obscure requirements that a developer may find themselves facing is the need to compare a row with its immediate sibling. One such case is when a list of values needs to be processed to produce a moving average or to smooth a sequence of statistical numbers where their order is important. For example, values lying along a time line. The solution is actually quite simple, but not immediately obvious.
2008-04-10
4,439 reads
What's going on with SQL Server? Quite a few problems with patches reported lately. Steve Jones comments on what he sees happening.
2008-04-09 (first published: 2007-04-06)
4,365 reads
Continuing on with part 18 of his series, MVP Jacob Sebastian examines building an RSS feed in T-SQL.
2008-04-09
6,497 reads
When you are trying to pin down the cause of a problem with a SQL Server, there is probably going to come a time when you need to get 'trace' information. If you've ever done that, you'll know how easy it is to get overwhelmed by the detail. Here, Shawn McGehee shows how to get round the problem by capturing trace information on a schedule, filtering the captured information, and monitoring it from a central location.
2008-04-09
2,451 reads
Steve Jones talks about some research from Dr. Cross, a professor from his alma mater, into social networks and how work gets done in a company.
2008-04-09
41 reads
2008-04-09
40 reads
Steve Jones talks about some research from Dr. Cross, a professor from his alma mater, into social networks and how work gets done in a company.
2008-04-09
28 reads
This article illustrates how to query dynamic management views to find the TOP queries based on average CPU and average I/O.
2008-04-09
6,335 reads
A note from the editor on our very popular Question of the Day. Learn what it is, how it works, and what you can do to improve it.
2008-04-08
2,604 reads
A new SSIS developer finds a problem with the Transfer SQL Server Objects task. Join new author Stephen LaPlante as he digs through and discovers a bug in this task.
2008-04-08 (first published: 2007-04-26)
9,933 reads
By Steve Jones
Thanks to everyone who attended my sessions today at SQL Saturday Boston 2025. I’ve...
SQL Server 2025 introduces native support for vector data types and external AI models....
By Steve Jones
Fear is fueled by a lack of imagination. The antidote to fear is not...
I'm building ETL packages in SSIS. My data comes from an OLE DB Source...
Comments posted to this topic are about the item Building AI Governance and Policies-...
Why is sql doing a full scan VS seeking on the index? I've included...
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