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Deadlock Analysis,r then returns an error to the corresponding application, notifying the user that he has been chosen as a deadlock victim. This leaves the application with only two options: resubmit the transaction or apologize to the end user. To successfully complete a transaction and avoid the apologies, it is i
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Cursor Cost Analysis,r incurs significant additional overhead, database applications should avoid using cursors. T-SQL and SQL Server are designed to work best with sets of data, not one row at a time. Jeff Moden famously termed this type of processing RBAR (pronounced, ree-bar), meaning Row By Agonizing Row. However, i
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Database Workload Optimization,and the optimization techniques you can use to improve query performance. Next, you will learn how to apply this information to analyze, troubleshoot, and optimize the performance of a database workload. In this chapter, I cover the following topics:
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发表于 2025-3-26 00:52:13
Statistics Analysis,By now, you should have a good understanding of the importance of indexes. It is even more important for the optimizer to have the necessary information on the data distribution so that it can choose indexes effectively. In SQL Server, this information is maintained in the form of . on the index key.
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Grant FritcheyQuery Performance Tuning leads you through understanding the causes of poor performance, how to identify them, and how to fix them.
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SQL Query Performance Analysis,e of a system bottleneck, it is important to examine the database application workload and identify the SQL queries causing the most stress on system resources. To do this, you can use the Extended Events and other Management Studio tools.
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