On Wednesday, June 20, 2018, Łukasz Jarych <jaryszek(at)gmail(dot)com> wrote:
>
> How to know in postgresql which specific windows user is using database?
>
You cannot. All the server knows is the specific user credentials it is
authenticating.
That said you can authenticate those credentials in such a way so that
knowing the signed on user you would also know who they are in any
environment that uses the same authentication source - and if that source
supplies their Windows identity you are golden. The specific setups
involved here are outside my experience, though.
David J.