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How to use Perl's DBI connect when no mysql passwd is set?

 
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Old 06-12-2009
Can't call method "prepare" on an undefined value at...
I am getting the error "Can't call method "prepare" on an undefined value at..." with the following code:

<code>my %dbh;
my $dbh = DBI->connect("DBI:mysql:Customer_Data",
$username,
$password
) or die "Database connection failed.";

$myquery="SELECT * from Site";
$execute = $connect->prepare($myquery);
$execute->execute() or die $dbh->errstr;
</code>

Can anyone suggest what might be the problem?
Last edited by vincaStar; 06-12-2009 at 07:09 PM..
 
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LEARN ABOUT DEBIAN

dbix::connector::driver

DBIx::Connector::Driver(3pm)				User Contributed Perl Documentation			      DBIx::Connector::Driver(3pm)

Name
       DBIx::Connector::Driver - Database-specific connection interface

Description
       Some of the things that DBIx::Connector does are implemented differently by different drivers, or the official interface provided by the
       DBI may not be implemented for a particular driver. The driver-specific code therefore is encapsulated in this separate driver class.

       Most of the DBI drivers work uniformly, so in most cases the implementation provided here in DBIx::Connector::Driver will work just fine.
       It's only when something is different that a driver subclass needs to be added. In such a case, the subclass's name is the same as the DBI
       driver. For example the driver for DBD::Pg is DBIx::Connector::Driver::Pg and the driver for DBD::mysql is DBIx::Connector::Driver::mysql.

       If you're just a user of DBIx::Connector, you can ignore the driver classes.  DBIx::Connector uses them internally to do its magic, so you
       needn't worry about them.

Interface
       In case you need to implement a driver, here's the interface you can modify.

   Constructor
       "new"

	 my $driver = DBIx::Connector::Driver->new( $driver );

       Constructs and returns a driver object. Each driver class is implemented as a singleton, so the same driver object is always returned for
       the same driver.  The "driver" parameter should be a Perl DBI driver name, such as "Pg" for DBD::Pg or "SQLite" for DBD::SQLite. If a
       subclass has been defined for $driver, then the object will be of that class.  Otherwise it will be an instance of the driver base class.

   Instance Methods
       "ping"

	 $driver->ping($dbh);

       Calls "$dbh->ping". Override if for some reason the DBI driver doesn't do it right.

       "begin_work"

	 $driver->begin_work($dbh);

       Calls "$dbh->begin_work". Override if for some reason the DBI driver doesn't do it right.

       "commit"

	 $driver->commit($dbh);

       Calls "$dbh->commit". Override if for some reason the DBI driver doesn't do it right.

       "rollback"

	 $driver->rollback($dbh);

       Calls "$dbh->rollback". Override if for some reason the DBI driver doesn't do it right.

       "savepoint"

	 $driver->savepoint($dbh, $name);

       A no-op. Override if your database does in fact support savepoints. The driver subclass should create a savepoint with the given $name. See
       the implementations in DBIx::Connector::Driver::Pg and DBIx::Connector::Driver::Oracle for examples.

       "release"

	 $driver->release($dbh, $name);

       A no-op. Override if your database does in fact support savepoints. The driver subclass should release the savepoint with the given $name.
       See the implementations in DBIx::Connector::Driver::Pg and DBIx::Connector::Driver::Oracle for examples.

       "rollback_to"

	 $driver->rollback_to($dbh, $name);

       A no-op. Override if your database does in fact support savepoints. The driver subclass should rollback to the savepoint with the given
       $name. See the implementations in DBIx::Connector::Driver::Pg and DBIx::Connector::Driver::Oracle for examples.

Authors
       This module was written and is maintained by:

       David E. Wheeler <david@kineticode.com>

       It is based on code written by:

       Matt S. Trout <mst@shadowcatsystems.co.uk>
       Peter Rabbitson <rabbit+dbic@rabbit.us>

Copyright and License
       Copyright (c) 2009-2010 David E. Wheeler. Some Rights Reserved.

       This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.14.2							    2012-06-03					      DBIx::Connector::Driver(3pm)