I'm still wondering why it's not available for SQLServer (because there are use cases for this feature).
It is "just" a matter of driver interface (I mean the piece of code that implement ODBC API) that "just" do not give this feature or it's letteraly not possible with SQLServer?
Converting that back to the query string you sent may be impossible because that structure won’t record comments, line breaks, indents, escaped characters and the like.
Converting it to a query string that, when sent back, produces the same internal structure should be possible, but as user selecsosi wrote “Most of this I would expect to be more on the client side than server”.
It makes sense.
I didn't catch the "client side" part as you do, thanks for the explanation.