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The SQL Server 2016 Query Store: Analyzing Query Store Performance

There are some obvious advantages to having the Query Store, but what is the performance impact that it is likely to have on a busy OLTP database server? It is early days, of course and until we get more experience we have to rely on Microsoft's estimate of a performance impact of 3-5% on average. However, this will depend on a number of factors such as usage an the way it is configured. Enrico explores some of these factors in order to give a clearer picture of what you should expect.

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Question of the Day

Squared Values

What happens when I run this code in SQL Server 2022?

SELECT SQUARE('12')

See possible answers