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17-Dec-2019 00:09

Below is an example to change it instance-wide to a value of 8 without requiring the MAXDOP hint.

See the sample index rebuild script below using the MAXDOP query hint.Altogether, these changes across the latest releases can cause a variation in SQL Server behavior that you weren’t expecting.Note: This post is most applicable to SQL Server 2012 and higher, but some detail for prior releases is included for reference (and fun).Instead of using a simple lifetime average, Udemy calculates a course's star rating by considering a number of different factors such as the number of ratings, the age of ratings, and the likelihood of fraudulent ratings.This course explains what statistics are in SQL Server, how the query engine uses them to generate query plans, and how you can tweak them to improve performance. The course will take just under 2 hours to complete. It also includes T-SQL scripts you can download for use on your own systems.

See the sample index rebuild script below using the MAXDOP query hint.Altogether, these changes across the latest releases can cause a variation in SQL Server behavior that you weren’t expecting.Note: This post is most applicable to SQL Server 2012 and higher, but some detail for prior releases is included for reference (and fun).Instead of using a simple lifetime average, Udemy calculates a course's star rating by considering a number of different factors such as the number of ratings, the age of ratings, and the likelihood of fraudulent ratings.This course explains what statistics are in SQL Server, how the query engine uses them to generate query plans, and how you can tweak them to improve performance. The course will take just under 2 hours to complete. It also includes T-SQL scripts you can download for use on your own systems.Figure 2 below is used to measure performance differences by changing the MAXDOP during index rebuilds for a 30MB table in the Adventure Works database.