Automatic Refresh all posts at once

you can do something like this:

$args = array(
    'posts_per_page' => 1000,
    'post_type' => 'post'
    );
$the_query = new WP_Query( $args );

if ( $the_query->have_posts() ) { 
    while ( $the_query->have_posts() ) {
        $the_query->the_post();
        $casa_id = $post->ID;
        update_post_meta($post->ID, 'casa_id', $casa_id);
    }
}