September 2007
Intermediate to advanced
448 pages
13h 52m
English
book
Inside Microsoft® SQL Server™ 2005: Query Tuning and Optimization
by Kalen Delaney, Sunil Agarwal, Craig Freedman, Ron Talmage, Adam Machanic
Content preview from Inside Microsoft® SQL Server™ 2005: Query Tuning and Optimization
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Multiple Plans in Cache
SQL Server will try to limit the number of plans for a query or a procedure. Because plans are reentrant, this is easy to accomplish. You should be aware of some situations that will cause multiple query plans for the same procedure to be saved in cache. The most likely situation is a difference in certain SET options, as discussed previously.
One other connection issue can affect whether a plan can be reused. If an owner name must be resolved implicitly, a plan cannot be reused. For example, suppose user sue issues the following SELECT statement:
SELECT * FROM Orders
SQL Server will first try to resolve the object by looking for an object called Orders in the default schema for the user sue, and if no such object can ...
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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.
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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.