But that one is for MS SQL Server, not Oracle

It's postgres, but implementing TDS. It is important to understand that the networking is not the server.

https://en.m.wikipedia.org/wiki/Tabular_Data_Stream

I use freetds in many places.

https://www.freetds.org/

I don't think that the programming language inside Sybase/Microsoft SQL Server, known as Transact-SQL, has been implemented in postgres, but I could be wrong.

https://en.m.wikipedia.org/wiki/Transact-SQL

Microsoft does not implement SQL/PSM in SQL Server. They need to do so. Immediately.

> I don't think that the programming language inside Sybase/Microsoft SQL Server, known as Transact-SQL, has been implemented in postgres

You are wrong; from the Babelfish page: “With Babelfish, Aurora PostgreSQL now understands T-SQL, Microsoft SQL Server's proprietary SQL dialect, and supports the same communications protocol, so your apps that were originally written for SQL Server can now work with Aurora with fewer code changes.”