The sp_lock system stored procedure is a great tool for checking the amount of locking that occurs on your database system. It returns the number and types of locks that are being held by current active SQL Server sessions.
In SQL Server 2000 or any relational database, the concept of NULL can be both confusing and hazardess to your employment. Not understanding how to work with NULLs can lead to incorrect responses to queries and poor business decisions being made. New author Michael Coles brings us four rules that can help you work with NULL values in your tables.
We recently ran a survey at SQLServerCentral.com and got over 600 responses. Here are the results and some commentary from Steve Jones
As databases grow, we store more and more types of data. This Friday's poll asks what types of data you don't want to store.
This white paper presents general information, best practices, and tips for designing charts within Microsoft SQL Server Reporting Services reports. It provides an overview of some Reporting Services features, answers common chart design and feature questions, and includes advanced examples of how to design better charts.
In Part 1 of a 3 Part Series Joydip Kanjilal discusses the implementation of a provider independent Data Access Layer in ADO.NET.
LINQ to Objects and LINQ to Entities have an arsenal of Standard Query Operators that operate on sequences to perform a wide variety of operations.
Part two of the interview looks at some design decisions in building a warehouse as well as some of the tools available.
More and more companies are looking to use social software, like Facebook, to link employees, but is this a good thing?
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...
By James Serra
A bunch of new features for Microsoft Fabric were announced at the Microsoft Fabric Community...
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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