how to or query used in wp_query code example

Example: wp query

have_posts() ) {
    echo '
';
    while ( $the_query->have_posts() ) {
        $the_query->the_post();
        echo '
' . get_the_title() . '
';
    }
    echo '
';
} else {
    // no posts found
}
/* Restore original Post Data */
wp_reset_postdata();