Len() and DataLength()
Both system functions, Len() and DataLength(), in SQL Server are used to measure the length of the data. The main...
2013-05-16
1,293 reads
john_wong_ca@hotmail.com
Len() and DataLength()
Both system functions, Len() and DataLength(), in SQL Server are used to measure the length of the data. The main difference of those 2 is that Len() gets the...
2013-05-16
2 reads
Protect Yourself from Using DBCC WritePage
I blogged DBCC WritePage a year ago here http://www.sqlnotes.info/2011/11/23/dbcc-writepage/. It’s an extremely dangerous command especially with the last parameter “directORbufferpool”...
2013-05-14
988 reads
Protect Yourself from Using DBCC WritePage
I blogged DBCC WritePage a year ago here http://www.sqlnotes.info/2011/11/23/dbcc-writepage/. It’s an extremely dangerous command especially with the last parameter “directORbufferpool” of this command turned on. I also showed you...
2013-05-14
2 reads
Attach Database with Missing NDF File
I wonder if you’ve had the situation that I had before where you have to attach a database with one...
2013-05-13 (first published: 2013-05-07)
3,703 reads
Bring Offline File Online — Modify SQL Server Metadata
In my last post, I demonstrated how to mount a database with missing NDF files. In the end, we still...
2013-05-09
1,547 reads
Bring Offline File Online — Modify SQL Server Metadata
In my last post, I demonstrated how to mount a database with missing NDF files. In the end, we still have issues removing tables created over missing files, the...
2013-05-09
25 reads
Attach Database with Missing NDF File
I wonder if you’ve had the situation that I had before where you have to attach a database with one or few missing .ndf files. It seems pretty common...
2013-05-07
3 reads
Fix Page Checksum
A checksum value is tagged with every data page in SQL Server. This is used to detect issues on the...
2013-05-02
1,908 reads
Fix Page Checksum
A checksum value is tagged with every data page in SQL Server. This is used to detect issues on the storage system to ensure what has been read from...
2013-05-02
4 reads
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Arc Enabled SQL Server
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Question of the Day
The Maximum Value in the Identity Column
I have a table with this data:
TravelLogID CityID StartDate EndDate 1 1 2025-01-01 2025-01-06 2 2 2025-01-01 2025-01-06 3 3 2025-01-01 2025-01-06 4 4 2025-01-01 2025-01-06 5 5 2025-01-01 2025-01-06I run this code:
SELECT IDENT_CURRENT('TravelLog')
I get the value 5 back. Now I do this:
SET IDENTITY_INSERT dbo.TravelLog ON
INSERT dbo.TravelLog
(
TravelLogID,
CityID,
StartDate,
EndDate
)
VALUES
(25, 5, '2025-09-12', '2025-09-17')
SET IDENTITY_INSERT dbo.TravelLog OFF
I now run this code.
DBCC CHECKIDENT(TravelLog)
GO
INSERT dbo.TravelLog
(
CityID,
StartDate,
EndDate
)
VALUES
(4, '2025-10-14', '2025-10-17')
GO
What is the value for TravelLogID for the row I inserted for CityID 4 and dates starting on 14 Oct 2025?
See possible answers