2013-02-18 (first published: 2013-01-25)
2,764 reads
T-SQL
2013-01-25
2,802 reads
2013-01-23
2,369 reads
2013-01-22
2,224 reads
VARCHAR (MAX), NVARCHAR (MAX) and NTEXT Data Types
Despite NTEXT and TEXT being deprecated in SQL Server for some time they are still both used in production systems. In this article, I will briefly demonstrate the difference between a VARCHAR (MAX), NVARCHAR (MAX) and the NTEXT data types, and the impact on performance from using NTEXT/TEXT.
2013-01-21
6,201 reads
2013-01-18
2,496 reads
2013-01-17
2,236 reads
2013-01-16
2,303 reads
SQL Server T-SQL Tuning – NOT IN and NOT Exists
Following on from the previous TSQL performance tuning article in this series, we now focus on the important topic of T-SQL “Not IN” And “Not Exists “
2013-01-16
7,301 reads
2013-01-14
2,294 reads
Blogs
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...
Announcements from the Microsoft Fabric Community Conference
By James Serra
A bunch of new features for Microsoft Fabric were announced at the Microsoft Fabric Community...
Forums
Don't Forget About Financial Skills
Comments posted to this topic are about the item Don't Forget About Financial Skills
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