September 2009
Intermediate to advanced
832 pages
23h 31m
English
book
Inside Microsoft® SQL Server® 2008: T-SQL Programming
by Dejan Sarka Itzik Ben-Gan Greg Low, Roger Wolter, Ed Katibah, and Isaac Kunen
Content preview from Inside Microsoft® SQL Server® 2008: T-SQL ProgrammingBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 4. Triggers
Itzik Ben-Gan and Dejan Sarka
Triggers are routines that fire automatically as a result of an event in the database server. Microsoft SQL Server supports data-manipulation language (DML), data-definition language (DDL) triggers, and logon triggers, which can be developed either with T-SQL or with .NET code and can fire after or instead of the triggering event. In this chapter I’ll describe in detail the different types of triggers.
Triggers are first and foremost stored procedures in terms of how SQL Server treats them internally. They undergo similar processing phases to stored procedures (parsing, resolution, and optimization). However, triggers do not have an interface (input and output parameters), and you cannot invoke them ...
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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.