2012-11-28
2,362 reads
T-SQL
2012-11-26
2,265 reads
2012-11-19
2,227 reads
2012-11-16
2,381 reads
Hierarchies on Steroids #2: A Replacement for Nested Sets Calculations
In this sequel to his first "Hierarchies on Steroids" article, SQL Server MVP Jeff Moden shows us how to build a pre-aggregated table that will answer most of the questions that you could ask of a typical hierarchy. Any bets on whether Santa is packin’ a Tally Table in his bag or not?
2012-11-15
19,989 reads
2012-11-14
2,164 reads
2012-11-08
2,669 reads
Print Text Month Calendar
This function return the text format of a month calendar. It could be useful for sending through emails when you do do not have other tools, but T-SQL to send text emails.
2023-07-18 (first published: 2012-10-31)
1,929 reads
Deleting Duplicate Records
In Datawarehousing, a normal scenario is eleminating duplicate records/rows or deleting duplicate records, here's the solution.
2015-09-11 (first published: 2012-10-31)
5,016 reads
Routine Dependency Visualizer
This article contains a T-SQL script that can show you the dependency of all objects in your SQL Server database.
2012-10-30
4,693 reads
Blogs
Cloud Data Driven User Group 2025 – Slides & Scripts
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Leading Through Change: Guiding Teams in Times of Uncertainty
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The Mystery of the Locked-Up Database -Scooby Dooing Episode 6
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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
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