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
1,304 reads
John Huang’s Blog
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
6 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
994 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
3 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
1,554 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
30 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)
3,746 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
7 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
1,919 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
6 reads
Blogs
In-Person CISA Training – April 13-16, 2026
By Brian Kelley
I will be leading an in-person Certified Information Systems Auditor (CISA) exam prep class...
EightKB 2026
EightKB is back again for 2026! The biggest online SQL Server internals conference is...
The FinOps Lifecycle: From Budgeting to Reporting
By HeyMo0sh
Working in DevOps long enough teaches you two universal truths: That’s exactly why I...
Forums
query to track time spent on individual tasks in SSIS
Hi everyone I am looking at building a query to determine how much time...
SQL Server Transactional Replication from Always On Availability Groups to Azure SQL Database
Comments posted to this topic are about the item SQL Server Transactional Replication from...
Hidden Heroes
Comments posted to this topic are about the item Hidden Heroes
Question of the Day
Identities and Sequences I
When thinking of the Identity property for auto incrementing columns and sequences for the same action, which are explicitly linked to increment a number in a table when a new row is added?
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