 # Dump of table user_groups
 # ------------------------------------------------------------
 
-DROP TABLE IF EXISTS `user_groups`;
-
-CREATE TABLE `user_groups` (
+CREATE TABLE IF NOT EXISTS `user_groups` (
   `id` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
   `name` varchar(32) COLLATE utf8mb4_unicode_ci NOT NULL DEFAULT '',
   `description` text COLLATE utf8mb4_unicode_ci,

# Dump of table reviews
# ------------------------------------------------------------

DROP TABLE IF EXISTS `reviews`;

CREATE TABLE `reviews` (
  `id` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
  `article_id` bigint(20) unsigned NOT NULL,
  `user_id` bigint(20) unsigned NOT NULL,

/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;

# Dump of table article_images
# ------------------------------------------------------------

CREATE TABLE IF NOT EXISTS `article_images` (
  `id` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
  `article_id` bigint(20) unsigned DEFAULT NULL,
  `image_url` varchar(240) CHARACTER SET utf8 NOT NULL DEFAULT '',
