Re: dblink_exists

On Sun, 2020-12-20 at 18:52 -0700, David G. Johnston wrote:
> On Sunday, December 20, 2020, <ml(at)ft-c(dot)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