See output of a sql query while plugin installation in wordpress

Doing wordpress plugin development, I am creating a table (while installing the plugin) with the following string:

$sql = "CREATE TABLE (query skipped)..."; /*someting*/

For example: I have this

register_activation_hook( __FILE__, 'my_plugin_install' );
function my_plugin_install(){

$sql = "CREATE TABLE (query skipped)..."; /*someting*/
echo $sql;
}

The problem is there is some error with this query and and I want to see the output of $sql using php.

But the above code doesn't echo anything when plugin is installed. Any way to see the ouput?

Details: 
function my_plugin_install(){

   global $wpdb, $current_user;;

   //getting the musician/user rating keys
    global $k11, $k12, $k13, $k14, $k21, $k22, $k23, $k24;

   $fabprofile_table_name=$wpdb->prefix."fabulous_profile";

   $fabulous_profile_version = "2.0";

   //mid= music user id
   //uid = general user id
   //creating the ratings table
   $sql = "CREATE TABLE $fabprofile_table_name (

  mid tinyint(9) NOT NULL,

  uid tinyint(9) NOT NULL,

  $k11 tinyint(1) NOT NULL, $k12 tinyint(1) NOT NULL,$k13 tinyint(1) NOT NULL, $k14 tinyint(1) NOT NULL,

  $k21 tinyint(1) NOT NULL, $k22 tinyint(1) NOT NULL, $k23 tinyint(1) NOT NULL, $k24 tinyint(1) NOT NULL

);";



   require_once( ABSPATH . 'wp-admin/includes/upgrade.php' );

   dbDelta( $sql );
   $wpdb->show_errors(); 
    echo $sql;
    }