May 2013
Intermediate to advanced
700 pages
20h 7m
German
book
Abfragen von Microsoft SQL Server 2012 - Original Microsoft Training für Examen 70-461
by Itzik Ben-Gan, Dejan Sarka, Ron Talmage
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Kapitel 3. Filtern und Sortieren von Daten
Prüfungsziele in diesem Kapitel:
Arbeiten mit Daten
Abfragen von Daten mithilfe von SELECT-Anweisungen
Einrichten von Datentypen
Bearbeiten von Daten
Arbeiten mit Funktionen
Die Filterung und Sortierung von Daten ist der grundlegendste und auch am häufigsten vorkommende Aspekt der Abfrage. Bei fast jeder Abfrage, die Sie schreiben, müssen Sie die Daten filtern, und bei vielen erfolgt auch eine Sortierung. Die herkömmliche Vorgehensweise zur Datenfilterung von T-SQL erfolgt mithilfe von Prädikaten, es gibt jedoch auch ein anderes Prinzip, das auf der Anzahl und Reihenfolge der Zeilen beruht. Für diese zweite Möglichkeit bietet T-SQL TOP und OFFSET-FETCH an. Die Sortierung mag zwar wie ein trivialer Gesichtspunkt ...
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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.