May 2018
Intermediate to advanced
680 pages
15h 54m
German
Content preview from XML -- Technologien, Grundlagen, Validierung, Auswertung
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Vereinigte Sequenzen
Nodelists (Sequenzen) können zunächst generiert und anschließend mit union verkettet werden.
$g nimmt die Liste aller Menschen mit einem Gehalt von über 5000 auf, $w stellt die Liste aller Hemdkäufer dar. Über union (|) werden beide in $ges vereinigt, Mehrfachnennungen werden damit eliminiert.
Die XQuery-Schleife for $z at $p in $ges return ... gibt das Ergebnis aus. Die aufsteigende Nummerierung wird über $p gewährleistet, das in XQuery via at die Aufgabe von position() übernimmt.
<root>{ let $g as node()+:= for $x in /Orte/Ort/Mensch where $x/Gehalt >5000 return $x let $w as node()+:= for $x in /Orte/Ort/Mensch where $x/Kauf/bez = "Hemd" return $x let $ges as node()+:= $g union $w for $z at $p in $ges return <mensch ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.