I've been curious out XQuery

XPath is pretty powerful. What is it that XQuery can
do that I can't already do with XPath? What makes it
so crucial that we have it?
Enlighten me...
2005 Microsoft MVP C#
Robbe Morris
http://www.robbemorris.com
http://www.masterado.net/home/listings.aspx
"Tony Lavinio" <stylusstudio@.stylusstudio.com> wrote in message
news:Ntcce.11489$f6.6526@.fe04.lga...
> Dear SQL Server users on microsoft.public.sqlserver.xml,
> Microsoft recently announced that they are dropping XQuery from
> their next release of the .NET Framework, 2.0 (Whidbey). Since
> Microsoft ships .NET Framework only every 3 or so years, cutting
> XQuery from Whidbey means that the next opportunity for XQuery
> to find its way into .NET Framework won't be until around 2009,
> and even then it's far from a sure thing. That's why it's so
> important that the community of XQuery developers makes XQuery a
> priority for Microsoft.
> Stylus Studio believes that XQuery's has broader applicability
> then just an XML querying language but is also an important
> mid-tier data integration and Web service enabling technology,
> and therefore should not be dropped from the Microsoft .NET 2.0
> Framework. Many Microsoft MVP's agree and Stylus Studio is
> asking for any developer who shares this vision and to sign the
> petition online at: http://www.stylusstudio.com/xqueryforall/
> --
> Sincerely,
> Tony Lavinio
> Stylus Studio Principal Software Architect
> http://www.stylusstudio.com/
Hi Robbe,
Comparing XPath with XQuery can't be done in the scope of a message.
There is fare amount of material on XPath2/XQuery (starting from
w3c.org)
Here a quick highlight:
- XQuery is based on XPath2.
- The type system is more flexible (new built-in type sequence, XSD
types).
- The built-in function library has been vastly improved.
- XQuery expresses grouping/ordering in a very intuitive way
(for/where/order by).
Ivan
|||Comparing XQuery vs XPath 2.0:
XQuery 1.0 = XPath 2.0 - (sibling, ancestor and namespace axes) + element
construction + variable binding + order by + user-defined functions + Prolog
(namespace binding etc.)
I expect that 60% of the XQuery 1.0 queries written will also be valid XPath
2.0 queries (disregarding the namespace bindings in the XQuery prolog).
Best regards
Michael
"Robbe Morris [C# MVP]" <info@.turnkeytools.com> wrote in message
news:%23kTfxQrTFHA.2680@.tk2msftngp13.phx.gbl...
> XPath is pretty powerful. What is it that XQuery can
> do that I can't already do with XPath? What makes it
> so crucial that we have it?
> Enlighten me...
> --
> 2005 Microsoft MVP C#
> Robbe Morris
> http://www.robbemorris.com
> http://www.masterado.net/home/listings.aspx
>
> "Tony Lavinio" <stylusstudio@.stylusstudio.com> wrote in message
> news:Ntcce.11489$f6.6526@.fe04.lga...
>
|||What is a user-defined function for XQuery? Can you elaborate?
2004 and 2005 Microsoft MVP C#
Robbe Morris
http://www.robbemorris.com
http://www.masterado.net/home/listings.aspx
"Michael Rys [MSFT]" <mrys@.online.microsoft.com> wrote in message
news:%23i$WOo%23TFHA.1796@.TK2MSFTNGP15.phx.gbl...
> Comparing XQuery vs XPath 2.0:
> XQuery 1.0 = XPath 2.0 - (sibling, ancestor and namespace axes) + element
> construction + variable binding + order by + user-defined functions +
> Prolog (namespace binding etc.)
> I expect that 60% of the XQuery 1.0 queries written will also be valid
> XPath 2.0 queries (disregarding the namespace bindings in the XQuery
> prolog).
> Best regards
> Michael
> "Robbe Morris [C# MVP]" <info@.turnkeytools.com> wrote in message
> news:%23kTfxQrTFHA.2680@.tk2msftngp13.phx.gbl...
>
|||XQuery allows users to define XQuery functions in the prolog (and even
provides the option for function library modules). These functions can
either be external, or written using XQuery.
Best regards
Michael
"Robbe Morris [C# MVP]" <info@.turnkeytools.com> wrote in message
news:%233O6sKEUFHA.736@.TK2MSFTNGP10.phx.gbl...
> What is a user-defined function for XQuery? Can you elaborate?
> --
> 2004 and 2005 Microsoft MVP C#
> Robbe Morris
> http://www.robbemorris.com
> http://www.masterado.net/home/listings.aspx
>
> "Michael Rys [MSFT]" <mrys@.online.microsoft.com> wrote in message
> news:%23i$WOo%23TFHA.1796@.TK2MSFTNGP15.phx.gbl...
>
|||There's a fairly basic tutorial at W3Schools that serves as a good
beginner's intro:
http://www.w3schools.com/xquery/default.asp
Graeme Malcolm
Principal Technologist
Content Master
- a member of CM Group Ltd.
www.contentmaster.com
"Robbe Morris [C# MVP]" <info@.turnkeytools.com> wrote in message
news:%233O6sKEUFHA.736@.TK2MSFTNGP10.phx.gbl...
What is a user-defined function for XQuery? Can you elaborate?
2004 and 2005 Microsoft MVP C#
Robbe Morris
http://www.robbemorris.com
http://www.masterado.net/home/listings.aspx
"Michael Rys [MSFT]" <mrys@.online.microsoft.com> wrote in message
news:%23i$WOo%23TFHA.1796@.TK2MSFTNGP15.phx.gbl...
> Comparing XQuery vs XPath 2.0:
> XQuery 1.0 = XPath 2.0 - (sibling, ancestor and namespace axes) + element
> construction + variable binding + order by + user-defined functions +
> Prolog (namespace binding etc.)
> I expect that 60% of the XQuery 1.0 queries written will also be valid
> XPath 2.0 queries (disregarding the namespace bindings in the XQuery
> prolog).
> Best regards
> Michael
> "Robbe Morris [C# MVP]" <info@.turnkeytools.com> wrote in message
> news:%23kTfxQrTFHA.2680@.tk2msftngp13.phx.gbl...
>