Technical Article

Sparse Columns – ConvertSVtoXML & XMLToResv

Not very often I run across something with zero matches in a search engine, but had it happen recently. I had set up a simple demo of a sparse column set and happened to look at the execution plan, was interested to see that the Compute Scalar was backed by ConvertSVtoXML. This was on a select from a table with one row, and then, being a little more curious, updated it with an xml fragment I saw a call to ConvertXMLtoResv. I’d venture that those serve to convert back/forth from XML storage.

Blogs

Houston AI-Lytics 2026–Powerpoint Slides

By

Thanks to everyone for attending my session on running a Local LLM. If you...

The Book of Redgate: Do the Right Things

By

I do believe that Redgate has been very customer focused since it’s inception. I’ve...

GenAI vs Dashboards: Not the Same (And Never Will Be)

By

There’s a question I’ve been hearing more and more lately, especially as Copilot, Fabric,...

Read the latest Blogs

Forums

Warning: Could not open global shared memory to communicate with performance DLL

By water490

Hi everyone I am getting below warning when I run SSIS: Warning: 0x80049304 at...

Let's Talk Community Events!

By Pat Wright

Comments posted to this topic are about the item Let's Talk Community Events!

that one limitation in replication

By stan

Hi as shown below a replication target requires a primary key.  if we want...

Visit the forum

Question of the Day

Detecting Deadlocks

By default, how often is the SQL Server Database Engine checking for deadlocks?

See possible answers