package MyModel7::table1;

use base 'MyModel7';

__PACKAGE__->attr(
    primary_key => sub { ['key1'] },
    column => sub {
        my $self = shift;
        
        return [
            $self->column_clause,
            $self->model('table2')->column_clause(prefix => 'table2__')
        ];
    },
    join => sub {
        [
            'left outer join table2 on table1.key1 = table2.key1'
        ]
    },
);

1;