Re: Connect to postgresql database using Perl

[dipti shah <shahdipti1980@xxxxxxxxx>]

Thanks Guys. DBI works fine. I have written below code but it executes only on the server where I installed postgresql. Is there any way to run this code from remote host. I get an error when trying to run it from remote host. I think it is obvious because in below code there is no information where to connect to. Could you please help me out.

use DBI;
$DB_name    = 'mydb';
$DB_user    = 'postgres';
$DB_pwd     = '';
$dbh = DBI->connect("dbi:Pg:dbname=$DB_name","$DB_user","$DB_pwd");
if ( !defined $dbh ) { die "Cannot connect to database!\n"; }
$sth  = $dbh->prepare("SELECT * FROM mytable");
$sth->execute();
while ( ($id,$name) = $sth->fetchrow_array() ) {  print "$id\t\t $name \n"; }
$sth->finish();
$dbh->disconnect();

remote-host# perl pg-connect.pl
DBI connect('dbname=sysdb','postgres',...) failed: could not connect to server: No such file or directory
        Is the server running locally and accepting
        connections on Unix domain socket "/tmp/.s.PGSQL.5432"? at pg-connect.pl line 7
Cannot connect to database!

Thanks,
Dipti

On Wed, Mar 31, 2010 at 11:53 AM, Pavel Stehule <pavel.stehule@xxxxxxxxx> wrote:

Hello

2010/3/31 dipti shah <shahdipti1980@xxxxxxxxx>:

> Hi,
>
> Could anyone please provide me an example to connect to a postgresql
> database using Perl language and accessing the tables, schemas, and other
> postgresql objects.
>

http://www.felixgers.de/teaching/perl/perl_DBI.html
http://structbio.vanderbilt.edu/chazin/wisdom/dbi_howto.html

Regards

Pavel Stehule

> Thanks,
> Dipti
>