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There are a wide variety of common performance problems that you will encounter when query tuning. Part 1 of this two-part course begins by showing how to validate query execution assumptions around statistics and cardinality in order to ensure you're troubleshooting the true root cause of a query performance issue. You'll then learn about common areas where bad assumptions can occur that negatively impact overall query performance, and about common problems and solutions related to being imprecise when querying a database. The course is very demo-centric, with lots of practical tips and tricks you'll be able to apply in your environment. This course is perfect for developers, DBAs, and anyone responsible for query performance tuning on SQL Server, from SQL Server 2005 onward.
