Titlebook: Refactoring Legacy T-SQL for Improved Performance; Modern Practices for Lisa Bohm Book 2020 Lisa Bohm 2020 T-SQL.Transact-SQL.Performance.L

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Documentationed down in nested if statements, while loops, or calls to other SQL objects. If we have an understanding of the desired functionality, as well, we can make the determination whether the current code should be refactored or if we should just start from scratch.

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Functionses in return. There are also scalar-valued functions, in which you pass in one or a group of values and get a single return value.?Different types of functions can have vastly different effects on your query performance.

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Agent Jobsed mess. How many times have you heard about periodic slowness in the application or database, but it’s always gone by the time you get online to look for it? You need to determine if there is a real pattern to the slowness, then you can see if there are jobs that coincide with the painful times.

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