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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Controlling Locking
The SQL Server Query Optimizer usually chooses the correct type of lock and the lock mode. You should override this behavior only if thorough testing has shown that a different approach is preferable. Keep in mind that by setting an isolation level, you have an impact on the locks that are held, the conflicts that cause blocking, and the duration of your locks. Your isolation level is in effect for an entire session, and you should choose the one that provides the data consistency required by your application. Table-level locking hints can be used to change the default locking behavior only when necessary. Disallowing a locking level can adversely affect concurrency.
Lock Hints
T-SQL syntax allows you to specify locking hints ...
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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.