function sample_shortcode ($post) {

global $wpdb;

$query = "SELECT *
    FROM abc_sample
    LEFT JOIN (users)
    ON (abc_sample.user_email=users.user_email)";

$fff = $wpdb->get_results($query, OBJECT);
return $fff;

/****************/

if ($fff){
global $post;
 foreach ($fff as $post) {
    setup_postdata($fds);

return
  $post['abc_sample.id'] .  '<br />'
. $post['abc_sample.time'] . '<br />'
. $post['user.user_email'] . '<br />
<input type="submit" value="Modify" id="btnModify"
onclick="btnModify(' . $post['abc_sample.id'] . ')"/>';
   };
 };
};
add_shortcode( 'php_ABC' , 'sample_shortcode' );