2013-03-28
2,328 reads
T-SQL
HASHBYTES: Is CHECKSUM really required?
When compared with HASHBYTES, CHECKSUM, has a number of drawbacks. Hence, a question that comes up is: Is Checksum really required? In this article, I attempt to answer that question.
2013-03-27
8,212 reads
2013-03-25
2,104 reads
2015-02-05 (first published: 2013-03-22)
4,479 reads
2013-03-22
2,140 reads
2013-03-21
2,535 reads
Search for a Value Throughout Your Database
Learn how to search for a value throughout all database tables.
2013-03-14
7,349 reads
2013-03-13
2,042 reads
2013-03-12
2,298 reads
2013-03-29 (first published: 2013-03-08)
1,421 reads
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Don't Forget About Financial Skills
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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