$schema->resultset("UserScenario")->update_or_create(
    {
        name        => $user_scenario->{name},
        description => $user_scenario->{description},
    },
    { key   => "u_user_scenario_name" },
);

##</code><code>##

$schema->resultset("UserScenario")->update_or_create(
    {
        name => $user_scenario->{name},
    },
    { key   => "u_user_scenario_name" },
);

##</code><code>##

if (defined($user_scenario->{description}) {
    $schema->resultset("UserScenario")->update_or_create(
        {
            name        => $user_scenario->{name},
            description => $user_scenario->{description},
        },
        { key   => "u_user_scenario_name" },
    );
} else {
    $schema->resultset("UserScenario")->update_or_create(
        {
            name        => $user_scenario->{name},
        },
        { key   => "u_user_scenario_name" },
    );
}

##</code><code>##

$schema->resultset("UserScenario")->update_or_create(
    {
        name => $user_scenario->{name},
        ( defined($user_scenario->{description})
            ? ( description => $user_scenario->{description} )
            : ()
        ),
    },
    { key   => "u_user_scenario_name" },
);

##</code><code>##

my %fields;
$fields{name}        = $user_scenario->{name};
$fields{description} = $user_scenario->{description}
    if defined($fields{description});

$schema->resultset("UserScenario")->update_or_create(
    \%fields,
    { key   => "u_user_scenario_name" },
);