March 2009
Intermediate to advanced
832 pages
23h 49m
English
book
Inside Microsoft® SQL Server® 2008: T-SQL Querying
by Lubor Kollar Itzik Ben-Gan Dejan Sarka, and Steve Kass
Content preview from Inside Microsoft® SQL Server® 2008: T-SQL QueryingBecome 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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Materialized Path with the HIERARCHYID Data Type
SQL Server 2008 introduces a CLR-based data type called HIERARCHYID that you can use to represent graphs. This type provides a built-in implementation for the materialized path model. Like the custom materialized path model, it works ideally for trees. As with the custom model, the HIERARCHYID values provide topological ordering, positioning a node in a certain place in the tree with respect to other nodes. Besides providing topological sorting, the HIERARCHYID paths position each node under a certain path of ancestors and in a certain place with respect to siblings. The HIERARCHYID paths differ from the custom model’s paths in two main ways. First, the custom model’s paths are made of the actual ...
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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.