Problem with ampersand "&"

I’m using XQUERY to slog through an XML doc, and dump the value of a CDATA
element into an NVARCHAR(MAX) field. The problem I’m running into is that
when an ampersand goes into that field, what I get back out in a query (using
FOR XML) is “&”.
using:
CONVERT( nvarchar(MAX), T.c.query('data(Value)') )
The above stores a “&” in the field, even though the input was:
<![CDATA[&]>
Any insight is much appreciated.
Looks like my above post got mangled.
The value it stores is: "&"
And the value I get back is: "&amp;"
|||"Rob Epler" <RobEpler@.discussions.microsoft.com> wrote in message
news:1E572252-FD0D-4395-868F-504CA84D6C40@.microsoft.com...
> Looks like my above post got mangled.
> The value it stores is: "&"
> And the value I get back is: "&amp;"
This double escaping often happens when the source is already escaped but
marked as plain text, e.g. in a CDATA section. Can you show an example of
the source?

Joe Fawcett - XML MVP
http://joe.fawcett.name
|||Hello Joe,
The XMLRW parser seems to be discarding the CDATA markup around the value
when storing nodes like this. What Rob is storing is something like '<Value><![CDATA[&]]></Value>'.
In SQL Server 2005, at serialization time, all element text-nodes are entitized.
This seems to superceed what the spec seems to indicate should be done with
CDATA at parse time.
Thanks,
Kent Tegels
http://staff.develop.com/ktegels/
|||Hi Rob
sorry for the late reply.
But you should never extract values from an XML document using
CONVERT(nvarchar(MAX), T.c.query('data(Value)'))
use
T.c.value('Value', 'nvarchar(MAX)') instead. That should take care of your
encoding issue.
Best regards
Michael
"Rob Epler" <Rob Epler@.discussions.microsoft.com> wrote in message
news:BFFD350A-2B24-4133-8CEB-FCF5F700D560@.microsoft.com...
> I'm using XQUERY to slog through an XML doc, and dump the value of a CDATA
> element into an NVARCHAR(MAX) field. The problem I'm running into is that
> when an ampersand goes into that field, what I get back out in a query
> (using
> FOR XML) is "&".
> using:
> CONVERT( nvarchar(MAX), T.c.query('data(Value)') )
> The above stores a "&" in the field, even though the input was:
> <![CDATA[&]>
> Any insight is much appreciated.
>