Question

help with xquery where clause

Asked by: BillTr

I'm just starting to learn xquery and I can't seem to get the where clause to work. When I run it via xml spy it just returns the query in the output file. If someone could help me with that and perhaps point to some good links on xquery?

I've attached the code and the part of the dtd that I am using.

Thanks

xquery version "1.0";
<example>
for $b in doc('fixedQueryOutput.xml'")//securityNotice
where $b/pricedSecurityName = "FIRST test security name I 8.5 04/15/2012 (Security_344341)" 
return <Name>$b/pricedSecurityName</Name>
</example>
 
 
dtd:
<!ELEMENT securityNotice ((pricedSecurityName))>

                                  
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Asked On
2008-08-21 at 14:43:29ID23668612
Tags

xml, xquery

Topics

XQuery

,

Extensible Stylesheet Language Transformation (XSLT)

Participating Experts
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Points
500
Comments
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Answers

 

by: GertonePosted on 2008-08-22 at 09:41:50ID: 22291753

can you send the full DTD (this DTD is not valid since it declares only one element)
I recommend that you work on a wellformed document and try the hassle of validation after you have the XQuery working.

In the XQuery there is one obvious error (I did bnot check in too much detail)
<Name>$b/pricedSecurityName</Name>
should be
<Name>{$b/pricedSecurityName}</Name>

 

by: GertonePosted on 2008-08-22 at 09:42:09ID: 22291757

better is to send the XML as well

 

by: BillTrPosted on 2008-08-25 at 08:56:56ID: 22306560

Hi Gertone,
I copied the .dtd file to a .txt. I'm not sure if I can share the xml, at least not without removing some of the security names in the file. But I can do that if you need me to. Let me know.

Thanks for the help!

 

by: GertonePosted on 2008-08-25 at 09:35:22ID: 22306877

I would prefere to see the XML.
If you can't share it in public, send it to my private email (see my profile for the email address)
In the mean time I can see wheiter the DTD helps me at all

 

by: BillTrPosted on 2008-08-25 at 13:32:56ID: 22309003

I think I just found it. I found an example on the web where open an closing brackets where in the query.
So I changed mine to:

xquery version "1.0";
<example>
{
for $b in doc("fixedQueryOutput.xml")//securityNotice
let $c := $b//pricedSecurityName
where $b/pricedSecurityName = "TEST2"
return $c
}
</example>

The xquery books I'm looking at did not have the starting and ending {}. The queries I had run to this point did not use them. Can you give me some background on how they s/b used?






 

by: GertonePosted on 2008-08-25 at 14:13:50ID: 22309316

between tags that are meant to be copied to the output,
literal text is interpreted as the literal text.
If you want the XPath in the re to be ecvaluated, or the XQuery in there to be evaluated,
you need to wrap it in {}
I showed a similar example in my first response

20120131-EE-VQP-002

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