Technical Article

Data Degradation

The other day at a conference, the subject of data degradation/corrosion arose. The speaker at the conference said that data in a database degraded or corroded over time. The statement was made as if degradation over time applied to all databases. I found this blanket statement to be misguided. Indeed, I think that data does degrade in some databases, but not all.

Technical Article

What's a DBA

Most of us are tired of this overused, vague term. How many of you have clicked on a 'DBA' job posting only to find that it's not what you do? Or asked for a DBA resume from a recruiter and gotten something other than what you expected? Or...

External Article

XML Data Modification Language Workbench

XML Data Modification Language (XML DML) allows you to modify and update XML data. When working with SQL Server Databases, this is the most efficient way to modify elements in an XML column, yet the techniques of using XML-DML have not been well, or simply, described - up until now. Robert Sheldon presents a practical workbench to show the various modify methods

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Question of the Day

BIT_COUNT II

In SQL Server 2025, I have a table (dbo.UserPermission) that contains this data:

UserID  UserPermissions
15
23
37
4       NULL
What is returned when I run this code:
select bit_count(UserPermissions) as PermissionCount
from dbo.UserPermission
where UserID = 4;

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