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
1,298 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
5 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
991 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
1,552 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
27 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)
3,730 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
6 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
1,917 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
5 reads
Blogs
The Book of Redgate: Spread across the world
By Steve Jones
This was Redgate in 2010, spread across the globe. First the EU/US Here’s Asia...
Merry Christmas
By John
Today is Christmas and while I do not expect anybody to actual be reading...
Self-Hosting a Photo Server the Whole Family Can Use
By Bert Wagner
Until recently, my family's 90,000+ photos have been hidden away in the depths of...
Forums
Happy Holidays, Let's Do Nerdy Stuff
Comments posted to this topic are about the item Happy Holidays, Let's Do Nerdy...
UNISTR Escape
Comments posted to this topic are about the item UNISTR Escape
Celebrating Tomorrow
Comments posted to this topic are about the item Celebrating Tomorrow
Question of the Day
UNISTR Escape
In SQL Server 2025, I run this command:
SELECT UNISTR('*3041*308A*304C\3068 and good night', '*') as "A Classic";
What is returned? (assume the database has an appropriate collation)
A: 
B: 
C: 
See possible answers