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https://www.sqlskills.com/blogs/glenn/upgrading-sql-server-diagnosing-performance-regressions/ Semi-random musings about SQL Server performance Sat, 11 Jan 2020 20:51:54 +0000 hourly 1 https://wordpress.org/?v=6.9.4 https://www.sqlskills.com/blogs/glenn/upgrading-sql-server-diagnosing-performance-regressions/#comment-250264 Mon, 29 Oct 2018 22:04:35 +0000 http://3.209.169.194/blogs/glenn/?p=1246#comment-250264 Thank you.

]]> https://www.sqlskills.com/blogs/glenn/upgrading-sql-server-diagnosing-performance-regressions/#comment-250253 Mon, 29 Oct 2018 19:43:56 +0000 http://3.209.169.194/blogs/glenn/?p=1246#comment-250253 No, it does not disconnect users.

]]> https://www.sqlskills.com/blogs/glenn/upgrading-sql-server-diagnosing-performance-regressions/#comment-250244 Mon, 29 Oct 2018 16:34:31 +0000 http://3.209.169.194/blogs/glenn/?p=1246#comment-250244 Changing the compatibility level on a live database does not drop users or return wrong results for queries. Also, the way the query engine behaves changes but this has no effect on user sessions or the data. Is my understanding correct?

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