Re: Attaching database

On 2020-10-19 20:21:05 +0200, Pavel Stehule wrote:
> po 19. 10. 2020 v 20:18 odesílatel Igor Korot <ikorot01@gmail.com> napsal:
>     On Mon, Oct 19, 2020 at 12:51 PM Pavel Stehule <pavel.stehule@gmail.com>
>     wrote:
>     > It is a different thing - postgresql_fdw does nested connect - it uses
>     > client-server protocol.
>     >
>     > For postgres connect and sql engine process is one entity - and engine is
>     > written without a possibility to reconnect to another database.
>
>     So if I understand correctly the postgresql_fdw is creating a second
>     connection and uses it as kind of "virtualizing mechanism"
>     in order to give access to the second database.
>
>
> yes - it does new connect to somewhere (local or remote server, but mechanism
> is absolutely same)

In case this isn't clear:

It is the server (or more specifically, the foreign data wrapper) which
opens that connection. To the client it looks like it's just accessing a
normal table within the same database.

        hp

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