December 2001
Intermediate to advanced
800 pages
17h 55m
English
Content preview from Guru's Guide to SQL Server™ Stored Procedures, XML, and HTML, TheBecome 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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Managing Sequential Values
There was a time when dealing with identity columns in triggers was a black art. You had to jump through numerous hoops to get identity columns to work properly, and even then there were situations when it wasn't airtight. Thanks to the addition of SCOPE_IDENTITY() and IDENT_CURRENT() to Transact-SQL, this is no longer the case. As its name suggests, SCOPE_IDENTITY() retrieves the current value for an identity column within the current scope. IDENT_CURRENT(), on the other hand, doesn't care about the current scope. It just returns the latest identity value inserted into a table. These are both better tools than the venerable @@IDENTITY function. @@IDENTITY returns the last identity value inserted for the current connection, ...
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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.