March 2009
Intermediate to advanced
784 pages
30h 30m
English
book
Microsoft® SQL Server® 2008 Internals
by Paul Randal Kalen Delaney Kimberly Tripp, and Conor Cunningham
Content preview from Microsoft® SQL Server® 2008 InternalsBecome 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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Special Index Structures
SQL Server 2008 allows you to create several special kinds of indexes: indexes on computed columns, indexes on views, spatial indexes, full-text indexes, and XML indexes. This section covers the requirements and the structural differences of creating these types of indexes.
Indexes on Computed Columns and Indexed Views
Without indexes, some of these constructs—computed columns and views—are purely logical. There is no physical storage for the data involved. A computed column is not stored with the table data; it is recomputed every time a row is accessed (unless the computed column is marked as PERSISTED). A view does not save any data; it basically saves a SELECT statement that is executed again every time the data in the ...
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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.