T-SQL- What does N' means in rowpattern (xpath)

Question

I cannot understand the xml rowpattern of the following code in T-SQL.

OPENXML(@hDoc, N'//item') 

All the examples that I found in msdn were like /ROOT/Customer, but I don't understand N'//item'

Any ideas?

Answer 1

The N before any string in SQL Server marks the string as Unicode.

Essentially, the difference between char/varchar/text and nchar/nvarchar/ntext.