November 2013
Intermediate to advanced
982 pages
34h 23m
English
book
Microsoft SQL Server 2012 Internals
by Bob Beauchemin Kalen Delaney Conor Cunningham, Jonathan Kehayias, Benjamin Nevarez, and Paul S. Randal
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Caching mechanisms
SQL Server can avoid compilations of previously executed queries by using four mechanisms to make plan caching accessible in a wide set of situations.
Ad hoc query caching
Autoparameterization
Prepared queries, using either sp_executesql or the prepare and execute method invoked through your API
Stored procedures or other compiled objects (triggers, TVFs, etc.)
To determine which mechanism is being used for each plan in cache, you should look at the values in the cacheobjtype and objtype columns in the sys.dm_exec_cached_plans view. The cacheobjtype column can have one of six possible values.
Compiled Plan
Compiled Plan Stub
Parse Tree
Extended Proc
CLR Compiled Func
CLR Compiled Proc
This section looks at only Compiled Plan and Compiled ...
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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.