What I’ve learned from Groundhog Day.
One of my all time favorite movies is Groundhog Day staring Bill Murray. In case you’ve never watched it (and ... Continue reading
2020-01-10 (first published: 2019-12-30)
421 reads
Kenneth Fisher
SQL Homework – January 2020 – Document, document, document
Happy New Year! It being New Year’s, at least by the Gregorian calendar, I thought we could make this month’s ... Continue reading
2020-01-01
21 reads
What happens if I disable the clustered index?
You are probably already aware that you can disable an index. This can be handy when you have a large ... Continue reading
2019-12-30 (first published: 2019-12-16)
992 reads
A gift. T-SQL Tuesday #121
My good friend Malathi Mahadevan (blog|twitter) is hosting T-SQL Tuesday this month and wants us to talk about Gifts received ... Continue reading
2019-12-23 (first published: 2019-12-10)
279 reads
Viewing Azure SQL DB security with sp_AzSQLDBPermissions
A few months back I put the Azure SQL DB version of my permissions script into beta. I’m not sure ... Continue reading
2019-12-18
52 reads
SQL Homework – December 2019 – The default trace and the system health session.
I know this is the holiday season for many of us (which ones depend on your religion and nationality of ... Continue reading
2019-12-17 (first published: 2019-12-02)
440 reads
Bad Idea Cowboy Hat: BEGIN TRANSACTION; GO 1000;
One of my favorite presentations is Revenge the SQL by Rob Volk (blog|twitter). It’s a demonstration of a lot of ... Continue reading
2019-12-12 (first published: 2019-11-27)
1,129 reads
Session Evaluations from “SQL Server Security from the Ground Up”
I was recently given the opportunity to speak at Pass Summit. As always (this is the second time) this was ... Continue reading
2019-12-12
6 reads
Error message: http://System.Data.SqlClient.SqlException (0x80131904): Conversion failed when converting the varchar value ‘NULL’ to data type int.
I love this error. Primarily because it demonstrates two very important things. Errors matter. Make sure when you ask someone ... Continue reading
2019-12-11 (first published: 2019-12-05)
657 reads
#PowershellBasics: Working with arrays
I mentioned arrays in a previous post so I figured I should talk about what they are and how to ... Continue reading
2019-12-06 (first published: 2019-11-25)
452 reads
Blogs
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,...
The Mystery of the Locked-Up Database -Scooby Dooing Episode 6
No Scooby-Doo story is complete without footprints leading to a hidden passage. In SQL...
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Don't Forget About Financial Skills
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Building a Simple SQL/AI Environment
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Checking Identities
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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