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From: ml@ft-c.de
To: pgsql-sql@lists.postgresql.org
Subject: Re: dblink_exists
Date: Mon, 21 Dec 2020 06:07:57 +0100
Message-ID: <6963b9cb4034bb716fca2df60f3af69a08b395fd.camel@ft-c.de> (raw)
In-Reply-To: <CAKFQuwbu0OjsSf9S+dtHjd_s6rt7NnCPgq-Q3pjGBVkxXTzPGw@mail.gmail.com>
References: <ad1e2ca9dbbacae8ca129ed2a7c1cde975c0ed18.camel@ft-c.de>
	<CAKFQuwbu0OjsSf9S+dtHjd_s6rt7NnCPgq-Q3pjGBVkxXTzPGw@mail.gmail.com>

On Sun, 2020-12-20 at 18:52 -0700, David G. Johnston wrote:
> On Sunday, December 20, 2020, <ml@ft-c.de> wrote:
> > 
> > My general problem:
> > I need a command that send a answer immediately and not, when the
> > query
> > if finished. 
> dblink_exec()?
  no, it needs a connection string
>  
> > 
> > When someone start the script again (when it is running), so I need
> > a
> > section like:
> Advisory locks?
lock on a table: it is the  best solution  
> > 
> > 2. question:
> > When dlink_send_query is running, 
> > select dblink_get_connections() 
> > send NULL as answer. 
> > 
> Don’t know - though suggest showing actual code that results in this
> behavior.

Franz

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