September 2010
Intermediate to advanced
1704 pages
111h 8m
English
book
Microsoft® SQL Server 2008 R2 Unleashed
by Ray Rankins, Paul Bertucci, Chris Gallelli, Alex T. Silverstein
Content preview from Microsoft® SQL Server 2008 R2 Unleashed
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Transactions and Triggers
SQL Server 2008 provides two types of Data Manipulation Language (DML) triggers: AFTER and INSTEAD OF. INSTEAD OF triggers perform their actions before any modifications are made to the actual table the trigger is defined on.
Whenever a trigger is invoked, it is always invoked within another transaction, whether it’s a single-statement AutoCommit transaction or a user-defined multistatement transaction. This is true for both AFTER triggers and INSTEAD OF triggers. Even though an INSTEAD OF trigger fires before, or “instead of,” the data modification statement itself, if a transaction is not already active, an AutoCommit transaction is still automatically initiated as the data modification statement is invoked and prior ...
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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.
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.