Hi Andrey,
declare variable $x external;
> for $a in $x/root/a
> let $id := $a/id
> return
> if( exist( collection('aaa')/a[ id = $id ] ) )
> then(
> update insert
> <m>...</m>
> into collection('aaa')/a[ id = $id ]
> )
> else (
> update insert
> <a>
> <id>...</id>
> <m>...</m>
> </a>
> into collection('ettevotja_muudatused')
> )
>
> else statement clearly doesn't work, cause I need to specify a document
> name and create is somehow.
> How can I do this inside such a statement?
>
Sedna doesn't support nested insert statements (
http://modis.ispras.ru/sedna/progguide/ProgGuidesu6.html#x12-430002.3). If
you need complex mass update you have to implement it on the application
level: just start transaction and break your query into multiple XQuery and
XUpdate statements.
BTW, consider creating value index on collection('aaa')/a by id (see
http://modis.ispras.ru/sedna/progguide/ProgGuidesu8.html#x14-480002.5.3 and
http://modis.ispras.ru/sedna/progguide/ProgGuidesu5.html#x9-310002.2.2).
> And common question - does Sedna have any plans for XQuery Update
> Facility http://www.w3.org/TR/xquery-update-10 to implement?
>
Yes, but we can't say exact timeline for this feature.
Ivan Shcheklein,
Sedna Team
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