Two simple commands that can be a big help in performance tuning.
The first thing that always comes to mind when discussing performance tuning is query plans and rightly so. They are...
2014-09-02
2,593 reads
Kenneth Fisher
Generating a restore script
In order to speed up our backups on a large database our team decided to stripe the backup files. In...
2014-08-25 (first published: 2014-08-18)
7,520 reads
The amazing never shrinking heap
This is a quick demo of a little “trick” with heaps I’ve known about for a couple of years. However...
2014-08-25
612 reads
Two years!
Two years ago today I began my blog with a post about the DEFAULT keyword. I set out with the...
2014-08-20
944 reads
More than sp_help
If you have worked with SQL Server for very long you have probably run across the extremely useful system function...
2014-08-14
1,494 reads
Deny vs Revoke
Quick quiz. Which of these two commands is the opposite of GRANT?
DENYREVOKE
Well lets start with some definitions
GRANT – Grants permissions on...
2014-08-12 (first published: 2014-08-04)
8,515 reads
T-SQL Tuesday #57: SQL Family
This month’s T-SQL Tuesday topic is SQL Family and is brought to us by Jeffrey Verheul (b/t). It’s an amazing...
2014-08-12
586 reads
The clustered index columns are in all of the non clustered indexes.
Did you know that whatever columns you pick as your clustered index will be included in any non clustered indexes...
2014-08-07 (first published: 2014-07-30)
9,425 reads
SchemaBinding – What & Why
What
When you use the SchemaBinding keyword while creating a view or function you bind the structure of any underlying tables...
2014-08-06
1,117 reads
What is ANSI_NULLS and why will I be glad when it finally goes away?
Recently I wrote about what it means that a value is NULL. Right at the beginning I mentioned ANSI_NULLS and...
2014-08-04 (first published: 2014-07-28)
22,359 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...
Forums
Don't Forget About Financial Skills
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Building a Simple SQL/AI Environment
Comments posted to this topic are about the item Building a Simple SQL/AI Environment
Checking Identities
Comments posted to this topic are about the item Checking Identities
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