Selecting null value from XML in SQL Server

Question

I\'m trying to select from XML that has a null as one of the attributes. Instead of returning a null, it returns a 0. What am I doing wrong?
See code below to replicate:

Answer 1

I've simply used NULLIF to turn empty strings into NULLs as needed.

You can generate nil now using FOR XML, but I've never worked out how to parse it sorry...