Remove discount from variations and products woocommerce - WooExtend

restore.php

<?php
require_once('wp-load.php');

global $wpdb;

$str = "SELECT post_id, meta_value FROM {$wpdb->prefix}postmeta WHERE meta_key = '_regular_price'";
$arrRes = $wpdb->get_results($str);
foreach ($arrRes as $key => $value) {
	
	update_post_meta( $value->post_id, '_price', $value->meta_value);

	echo $value->post_id . ' done<br/>';
}
$str = "UPDATE {$wpdb->prefix}postmeta SET meta_value = '' WHERE meta_key IN ('_wpcd_sale_price', '_sale_price') ";
$arrRes = $wpdb->get_results($str);