Code-Snippets-Functions/Execute a function on a child site/WooCommerce/display-used-coupons-my-account-column.txt

// Add new column(s) to the "My Orders" table in the account.
function filter_woocommerce_account_orders_columns( $columns ) {
    $columns['coupon-codes'] = __( 'Coupons', 'woocommerce' );

    return $columns;
}
add_filter( 'woocommerce_account_orders_columns', 'filter_woocommerce_account_orders_columns', 10, 1 );

// Adds data to the custom column in "My Account > Orders"
function action_woocommerce_my_account_my_orders_column_coupon_codes( $order ) {
    // Get codes
    $coupon_codes = $order->get_coupon_codes();
        
    if ( ! empty( $coupon_codes ) ) {
        echo implode( ', ', $coupon_codes );
    }
}
add_action( 'woocommerce_my_account_my_orders_column_coupon-codes', 'action_woocommerce_my_account_my_orders_column_coupon_codes', 10, 1 );