diff --git a/database/wheeldb.sql b/database/wheeldb.sql
index 2a94f9e4..0d0ca5ea 100644
--- a/database/wheeldb.sql
+++ b/database/wheeldb.sql
@@ -34,6 +34,7 @@ CREATE TABLE `version` (
 -- Table structure for table `t_param`
 --
 
+DROP TABLE IF EXISTS `t_param`;
 /*!40101 SET character_set_client = utf8 */;
 CREATE TABLE `t_param` (
   `idx` bigint(20) NOT NULL AUTO_INCREMENT COMMENT '自增id',
@@ -51,6 +52,7 @@ CREATE TABLE `t_param` (
 -- Table structure for table `t_user`
 --
 
+DROP TABLE IF EXISTS `t_user`;
 /*!40101 SET character_set_client = utf8 */;
 CREATE TABLE `t_user` (
   `idx` bigint(20) NOT NULL AUTO_INCREMENT COMMENT '自增id',
@@ -67,23 +69,6 @@ CREATE TABLE `t_user` (
 /*!40101 SET character_set_client = @saved_cs_client */;
 /*!40103 SET TIME_ZONE=@OLD_TIME_ZONE */;
 
---
--- Table structure for table `t_friend_invite`
---
-
-/*!40101 SET character_set_client = utf8 */;
-CREATE TABLE `t_friend_invite` (
-  `idx` bigint(20) NOT NULL AUTO_INCREMENT COMMENT '自增id',
-  `account_id1` varchar(60) CHARACTER SET utf8 NOT NULL DEFAULT '' COMMENT 'accountid1',
-  `account_id2` varchar(60) CHARACTER SET utf8 NOT NULL DEFAULT '' COMMENT 'accountid2',
-  `createtime` int(11) NOT NULL DEFAULT '0' COMMENT '创建时间',
-  `modifytime` int(11) NOT NULL DEFAULT '0' COMMENT '修改时间',
-  UNIQUE KEY `uk_account_id` (`account_id`),
-  PRIMARY KEY (`idx`)
-) ENGINE=InnoDB AUTO_INCREMENT=10000 DEFAULT CHARSET=utf8 COLLATE=utf8_bin;
-/*!40101 SET character_set_client = @saved_cs_client */;
-/*!40103 SET TIME_ZONE=@OLD_TIME_ZONE */;
-
 /*!40101 SET SQL_MODE=@OLD_SQL_MODE */;
 /*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */;
 /*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */;