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Re: XQuery -- Reinventing the Wheel?

• From: Jonathan Robie <Jonathan.Robie@S...>
• To: Gerd Mueller <gerd@s...>, xml-dev@l...
• Date: Sat, 24 Feb 2001 11:29:27 -0500

At 10:07 AM 2/23/2001 +0100, Gerd Mueller wrote:

>IMHO, the current XQuery spec. tries to much: it wants to select
>_and_ transform, although selection would be enough. If I like to
>transform the query results I use XSLT. This way XSLT and XQuery
>would have a clear scope: One for transformation and the other for
>selection.

I think there is room for query languages of both types.

The first XML Query language I worked on, XQL, did only selection.

SQL does both selection and transformation, as do OQL, XML-QL, Lorel, YATL, 
and most XML query languages that stem from the database community. When we 
developed our use cases, they clearly required transformation. That's what 
determined the scope of XQuery.

You may argue that we had the wrong use cases. But given the use cases, we 
kept the language as small as we could.

Jonathan

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