diff --git a/doc/sql/ddk.sql b/doc/sql/ddk.sql
index 8d6cb0c0b54a9a4be40e415c5fd0db1d33b3d865..a3d4117ab287f46f473204d6a037b1f330564912 100644
--- a/doc/sql/ddk.sql
+++ b/doc/sql/ddk.sql
@@ -80,6 +80,7 @@ CREATE TABLE `ddk_lock` (
   `resource` varchar(200) NOT NULL COMMENT '锁定的资源',
   `desc` varchar(200) NOT NULL DEFAULT '' COMMENT '描述',
   `env` varchar(16) NOT NULL COMMENT '环境',
+  `create_time` datetime NOT NULL COMMENT '创建时间',
   PRIMARY KEY (`id`),
   UNIQUE KEY `uiq_idx_resource` (`resource`)
 ) ENGINE=InnoDB AUTO_INCREMENT=667 DEFAULT CHARSET=utf8mb4 COMMENT='数据库分布式锁表';