August 2009
Intermediate to advanced
832 pages
26h 54m
German
book
Microsoft SQL Server 2008 Internals
by Kimberly L. Tripp, Conor Cunningham, Adam Machanic, Paul S. Randal, Kalen Delaney
Content preview from Microsoft SQL Server 2008 Internals
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6.3. Grundlagen von Indexstrukturen
Wie wir in diesem Kapitel bereits angemerkt haben, hat eine Indexstruktur zwei grundlegende Bestandteile: die Blattebene und die Nicht-Blattebenen. In diesem Abschnitt lernen Sie, was genau in diesen Bereichen eines Index gespeichert ist und worin sich die verschiedenen Arten von Indizes dabei unterscheiden.
6.3.1. Die Abhängigkeit vom Gruppierungsschlüssel
Die Blattebene eines gruppierten Index enthält nicht nur die Indexschlüssel, sondern auch die Daten. Die Antwort auf die Frage »Was befindet sich außer den Schlüsselwerten auf der Blattebene eines gruppierten Index?« lautet daher: »Alles.« Alle Spalten aller Zeilen der Tabelle sind auf der Blattebene eines gruppierten Index zu finden. Anders gesagt: Wenn ...
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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.