December 2024
Intermediate to advanced
272 pages
5h 48m
German
Content preview from SQL Schnelleinstieg - Datenbanken abfragen und verwalten in 14 Tagen
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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.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.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.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.
Erstellen der ersten eigenen Datenbank
Ob mit einfachen Befehlen wie WHERE und ORDER BY, komplexeren Befehlen wie JOIN oder INTERSECT, Unterabfragen oder Skalarfunktionen, das Ziel einer SQL-Abfrage ist immer dasselbe: Informationsbeschaffung. Eine Datenbank besteht meist aus Millionen von Datenpunkten und ohne eine wohldefinierte Abfrage geht die Übersicht aufgrund der schieren Datenflut verloren. Letztendlich nützt die durchdachteste Abfrage jedoch nichts, wenn keine Datenbank vorhanden ist, auf die zugegriffen werden kann.
Wenden Sie SQL im Unternehmenskontext an, so werden Sie feststellen, dass die meisten Datenbanken schon lange definiert ...
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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.
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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.