December 2013
Intermediate to advanced
1872 pages
153h 31m
English
book
Microsoft® SQL Server 2012 Unleashed
by Ray Rankins, Paul T. Bertucci, Chris Gallelli, Alex T. Silverstein
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Query Plan Caching
When a batch of SQL statements is submitted to SQL Server, SQL Server performs a number of steps, including the following, before the data can be returned to the client:
1. Parse the SQL statements and build a query tree (the internal format on which SQL Server operates).
2. Check for a previous cached plan for the query/procedure. If one does not exist or is no longer valid, optimize the SQL statements and generate an execution plan.
3. Check for permissions for access to the underlying objects.
4. Execute the execution plan for the SQL statements.
The first time a stored procedure executes, SQL Server loads the SQL code for the stored procedure from the system catalog into the plan cache and optimizes and compiles an execution ...
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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.