To execute SQL commands and queries ... One very useful free interactive online resource is the PostgreSQL Exercises site. Additional online resources are listed on the PostgreSQL site.

Developers who want to set up PostgreSQL on Windows have a choice of installers packaged by third parties—everything from simple .zip archives to interactive ... and issue the SQL command ...

The SQL Server is only hosting 2 databases currently, and the largest is the one moving, so thresholding SQL back so they share resources shouldn't be a problem. Thanks for the assistance!

The new service is Babelfish for Aurora PostgreSQL. The tagline AWS CEO Andy Jassy used for this service in his re:Invent keynote today is probably telling: “Stop paying for SQL Server licenses ...