Обсуждение: DBI

 Hi. I need to know if I configure my psql with perl library I also need
the DBI::Pg class for quering my database in psql?. The following example
will work?

------
use DBI;

$dbh = new DBI( 'dbi:Pg:database;host', 'user', 'secret' );
if( ! $dbh->dbh ){
  echo "Could not connect to the database.<br>\n";
  exit( );
}

$sth = $dbh->prepare( 'SELECT COUNT(*) FROM some_table' );

and sow on...

------

What else do I need to install for quering a database in this way?

I did not installed yet Psql to know if will works.
Sorry, but my english it's not so god.
Cosmin.

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>>>>> "EC" == Ene Cosmin <cosmox@email.ro> writes:

 EC> Hi. I need to know if I configure my psql with perl library I also need
 EC> the DBI::Pg class for quering my database in psql?. The following example
 EC> will work?

 EC> ------
 EC> use DBI;

 EC> $dbh = new DBI( 'dbi:Pg:database;host', 'user', 'secret' );
 EC> if( ! $dbh->dbh ){
 EC> echo "Could not connect to the database.<br>\n";
 EC> exit( );
 EC> }

 EC> $sth = $dbh->prepare( 'SELECT COUNT(*) FROM some_table' );

 EC> and sow on...

 EC> ------

 EC> What else do I need to install for quering a database in this
way?

It seems to me your example is right.

So you need modules: Pg (installs together with postgresql), DBI and
DBD::Pg.

--
Anatoly K. Lasareff                 Email:    tolik@aaanet.ru
http://tolikus.hq.aaanet.ru:8080    Phone:      (8632)-710071

> Hi. I need to know if I configure my psql with perl library I also need
>the DBI::Pg class for quering my database in psql?. The following example
>will work?

if you vconfigure postgresql with --with-perl, the "native" Pg Module is built. This one differs a bit from DBI::Pg.
For me, I do not have DBI::Pg installed, but Pg, and I am using it successfully.

If you want do use DBI::Pg, you'll have to install it from CPAN.

Stefan

Thanks for the answer.
Where can I find this modules: DBI and DBD::Pg are classes ...?>?
sorry.... i don't know how to do it...i really nead to know for
a university project!!


... and why can I acces your webpage?

> http://tolikus.hq.aaanet.ru:8080

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