Why Are Y’all Changing the Compat Levels on Master?


One of the things I love about SQL ConstantCare® (which happens to be free this month, by the way) is that I can keep in touch with what y’all are actually doing on your production servers.

Today’s lesson was a complete shocker to me: some of y’all are changing the compatibility level on the master database.

Normally, when you install SQL Server, the master database gets a compatibility level that matches your SQL Server version. If you’re on SQL Server 2019, for example, the master database will be compat level 150, which is 2019.

But there are a surprising number