Is it worth continuing to run SQL Server when PostgreSQL licensing is zero? Rebecca Lewis has a well written post on why that looks at some of the pros and cons of paying for SQL Server instead of moving to PostgreSQL. She starts with some of the things PostgreSQL does well, of which I think the Extensibility is really cool. SQL Server has some of this in CLR and the non-SQL language support, but those seem kludgy and complex to me. They aren't really integrated into the SQL Server platform.

They're good, but I do wish vendors or the community could add some extensions in a way PostgreSQL does. Of course, I also worry about stability, so maybe this is a wish that isn't really a great idea.

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