May 2023
Intermediate to advanced
416 pages
8h 17m
German
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Kapitel 17: SORT-MERGE-Modul
Das SORT-MERGE-Modul wird hier nach den allgemeinen Regeln der ANSI STANDARD COBOL-Sprache erklärt. Dieses Modul erlaubt die Sortierung oder die Mischung einer bzw. mehrerer Dateien.
Das Sortieren einer Datei bedeutet, dass die Datensätze dieser Datei in eine aufsteigende oder absteigende Reihenfolge eines oder mehrerer Schlüssel (Ordnungsbegriff) gebracht werden. Das Sortieren kann mithilfe der SORT-Anweisung eingeleitet werden.
Das Mischen erfordert mehrere Dateien, die jeweils in sich selbst sortiert sind. Dabei sollen diese Dateien in einer aufsteigenden bzw. absteigenden Reihenfolge ihrer Schlüssel in einer Datei gemischt bzw. zusammengeführt werden. Nach ANSI85 dürfen nur sequenzielle Dateien im SORT-MERGE ...
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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.