Added ID as primary key

esx_identity.sql

@@ -9,10 +9,13 @@ ALTER TABLE `users`
 ;
 
 CREATE TABLE `characters` (
+	`id` int(11) NOT NULL AUTO_INCREMENT,
 	`identifier` varchar(255) NOT NULL,
 	`firstname` varchar(255) NOT NULL,
 	`lastname` varchar(255) NOT NULL,
 	`dateofbirth` varchar(255) NOT NULL,
 	`sex` varchar(1) NOT NULL DEFAULT 'f',
-	`height` varchar(128) NOT NULL
+	`height` varchar(128) NOT NULL,
+	
+	PRIMARY KEY (`id`)
 );