Many people have published high performance, read-less, Inline Table Valued functions that use Itzik Ben-Gan's wonderful "Virtual Numbers Table" to replace WHILE loops and other forms of RBAR. This one is Jeff Moden's version.
2019-08-13 (first published: 2019-08-04)
7,571 reads
Developing an enterprise architecture can be viewed as connect-the-dots for adults. However, in doing so, all you get is a pretty picture and not a management tool that can help an organization understand and manage itself.
2007-10-04
2,786 reads
We are always searching for new ways to improve the performance of our database systems. Raghavendra Narayana brings us a new article that examines an idea for rebuilding partitions and indexes based on data access: in real time!
2007-09-26
5,598 reads
Optimize the performance of a database which includes history or status tables.
2007-09-13
2,625 reads
There is an urgent need to acknowledge the limitations of data models and find a way to bridge the logical-physical divide between models and actual databases so that database designs can be fully understood.
2007-09-13
3,221 reads
Part 7 of our "Developing a Complete SQL Server OLTP Database Project" discusses performance issues resulting from using EncryptByCert and DecryptByCert. Read the article and download the code to run the test yourself.
2007-08-28
1,980 reads
SQL Server 2005 includes support for encrypting and decrypting data for storage using EncryptByCert. Let’s look at how to implement this in the SqlCredit database.
2007-08-24
2,450 reads
Alex Kuznetsov starts off a series of three articles on 'Unit Testing' your database development work. He begins by describing five simple rules that make all the difference.
2007-08-20
3,248 reads
Many new DBAs think that User-defined types are a very cool feature in SQL Server when they first encounter them. However many experienced DBAs soon realize that UDTs can be a pain to work with and longtime SQL Server guru David Poole discusses his experiences
2007-07-23
7,897 reads
In this article, we will examine some rarely explored areas that concern foreign keys; in particular, we will look at disabled and un-trusted foreign keys.
2007-06-29
3,287 reads
By Steve Jones
Thanks to everyone who attended my sessions today at SQL Saturday Boston 2025. I’ve...
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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