Re: create a text file from postgres (like Oracle UTL_FILE package) - Mailing list pgsql-general

ok. I gonna explain a little more my situation.

I have a postgres server (Linux) and clients
(Win2k+delphi application).
I need create  a text file with some columns from a
table in the server machine, but this file must be
created only when the user wants.  (click button on my
delphi program on the client side create a text file
on the server file system).
I can't share o mount a resource or connect by socket.
I think execute a postgres function from delphi and
leave to postgres a work to create the file.

so, my problem is how to create a text file from a
postgres function. may be I can use a java program
(like Oracle Java Stored Procedures).
How I execute a external java program from postgres
function?
exist some OS system call in postgres?

something like
Create or Replace Function run () returns  int4 as
begin
    execute_OS_system_call('java -jar someapp.jar');
    return (1);
end;

thanks

--- "Thomas F.O'Connell" <tfo@sitening.com> wrote:

> At this point, I'm not sure I'm understanding your
> question. I'll try
> restating my solution again:
>
> I would have, for example, a Perl script that used
> the DBI module to
> extract information from a given database and then
> let Perl handle any
> relevant text/data manipulation and file
> creation/manipulation.
>
> DBI should allow the execution of arbitrary SQL
> against any supported
> database, and postgres is supported.
>
> Also, I'd recommend continuing to post and not
> merely emailing me
> directly to keep more eyes on your problem.
>
> -tfo
>
> --
> Thomas F. O'Connell
> Co-Founder, Information Architect
> Sitening, LLC
> http://www.sitening.com/
> 110 30th Avenue North, Suite 6
> Nashville, TN 37203-6320
> 615-260-0005
>
> On Nov 5, 2004, at 12:20 PM, Leo Martin Orfei wrote:
>
> > If I let the script connect to DB and create files
> (I
> > belive in this solution), how   I execute the
> script
> > from a client side? may be a function? some OS
> system
> > call?
> >
> > thanks.
> >
> > --- "Thomas F. O'Connell" <tfo@sitening.com>
> wrote:
> >
> >> You're thinking about it in reverse. Let the
> script
> >> make calls via a
> >> database interface. There are database interfaces
> to
> >> postgres in a
> >> variety of modern programming languages.
> >>
> >> -tfo
> >>
> >> --
> >> Thomas F. O'Connell
> >> Co-Founder, Information Architect
> >> Sitening, LLC
> >> http://www.sitening.com/
> >> 110 30th Avenue North, Suite 6
> >> Nashville, TN 37203-6320
> >> 615-260-0005
> >>
> >> On Nov 5, 2004, at 7:24 AM, Leo Martin Orfei
> wrote:
> >>
> >>> ok, this appears to be a good solution...
> >>>
> >>> so, how I execute a perl (or C, or bash ) script
> >> from
> >>> a postgresql function?
> >>>
> >>> if I use C (I think that write C code and use it
> >> in
> >>> the  database is possible), I have to connect to
> >> the
> >>> database from my C code or it's embebed and I
> can
> >> use
> >>> tables directly?
> >>>
> >>> thanks.
>
>
> ---------------------------(end of
> broadcast)---------------------------
> TIP 8: explain analyze is your friend
>


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