May 2011
Intermediate to advanced
800 pages
39h 19m
German
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R7.13 Variablen in T-SQL verwenden
Aufgabe
Für die Verarbeitung innerhalb einer Stored Procedure benötigen Sie Variablen verschiedener Datentypen.
Hinweis
Variablen diesen Typs sind ausschließlich für die Verarbeitung auf dem SQL Server vorgesehen. Aus Ihrem VBA-Programm heraus können Sie nicht auf diese zugreifen. Dazu müssen Sie Stored Procedures mit Output-Parametern deklarieren.
Lösung
Variablen werden in T-SQL durch ein vorangestelltes @-Zeichen markiert. Sie finden zwar in der SQL Server-Hilfe auch Variablen, die mit zwei @-Zeichen beginnen, dabei handelt es sich jedoch um System-Variablen, die über bestimmte Zustände des SQL Servers Auskunft geben (zum Beispiel @@VERSION).
Die eigentliche Deklaration (in einer Stored Procedure oder einem Trigger) ...
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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.
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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.