WC_Tax::_get_tax_rate PHP Method

    public static function _get_tax_rate($tax_rate_id, $output_type = ARRAY_A)
    {
        global $wpdb;
        return $wpdb->get_row($wpdb->prepare("\n\t\t\tSELECT *\n\t\t\tFROM {$wpdb->prefix}woocommerce_tax_rates\n\t\t\tWHERE tax_rate_id = %d\n\t\t", $tax_rate_id), $output_type);
    }

 /**
  * Delete a single tax.
  *
  * @param WP_REST_Request $request Full details about the request.
  * @return WP_Error|WP_REST_Response
  */
 public function delete_item($request)
 {
     global $wpdb;
     $id = (int) $request['id'];
     $force = isset($request['force']) ? (bool) $request['force'] : false;
     // We don't support trashing for this type, error out.
     if (!$force) {
         return new WP_Error('woocommerce_rest_trash_not_supported', __('Taxes do not support trashing.', 'woocommerce'), array('status' => 501));
     }
     $tax = WC_Tax::_get_tax_rate($id, OBJECT);
     if (empty($id) || empty($tax)) {
         return new WP_Error('woocommerce_rest_invalid_id', __('Invalid resource ID.', 'woocommerce'), array('status' => 400));
     }
     $request->set_param('context', 'edit');
     $response = $this->prepare_item_for_response($tax, $request);
     WC_Tax::_delete_tax_rate($id);
     if (0 === $wpdb->rows_affected) {
         return new WP_Error('woocommerce_rest_cannot_delete', __('The resource cannot be deleted.', 'woocommerce'), array('status' => 500));
     }
     /**
      * Fires after a tax is deleted via the REST API.
      *
      * @param stdClass         $tax      The tax data.
      * @param WP_REST_Response $response The response returned from the API.
      * @param WP_REST_Request  $request  The request sent to the API.
      */
     do_action('woocommerce_rest_delete_tax', $tax, $response, $request);
     return $response;
 }