diff --git a/db/zentao.sql b/db/zentao.sql
index 5f73b7af19..6a7b9e36c3 100755
--- a/db/zentao.sql
+++ b/db/zentao.sql
@@ -463,7 +463,7 @@ CREATE TABLE IF NOT EXISTS `zt_case` (
   `precondition` text DEFAULT NULL,
   `keywords` varchar(255) NOT NULL DEFAULT '',
   `pri` tinyint unsigned NOT NULL DEFAULT 3,
-  `type` varchar(30) NOT NULL DEFAULT '1',
+  `type` varchar(30) NOT NULL DEFAULT '',
   `auto` varchar(10) NOT NULL DEFAULT 'no',
   `frame` varchar(10) NOT NULL DEFAULT '',
   `stage` varchar(255) NOT NULL DEFAULT '',
@@ -473,7 +473,7 @@ CREATE TABLE IF NOT EXISTS `zt_case` (
   `scriptedDate` date DEFAULT NULL,
   `scriptStatus` varchar(30) NOT NULL DEFAULT '',
   `scriptLocation` varchar(255) NOT NULL DEFAULT '',
-  `status` varchar(30) NOT NULL DEFAULT '1',
+  `status` varchar(30) NOT NULL DEFAULT '',
   `subStatus` varchar(30) NOT NULL DEFAULT '',
   `color` char(7) NOT NULL DEFAULT '',
   `frequency` tinyint unsigned NOT NULL DEFAULT 1,
@@ -16446,11 +16446,11 @@ CREATE TABLE IF NOT EXISTS `zt_metriclib` (
   `repo` varchar(30) NOT NULL DEFAULT '',
   `user` varchar(30) NOT NULL DEFAULT '',
   `dept` varchar(30) NOT NULL DEFAULT '',
-  `year` char(4) NOT NULL DEFAULT '0',
-  `month` char(2) NOT NULL DEFAULT '0',
-  `week` char(2) NOT NULL DEFAULT '0',
-  `day` char(2) NOT NULL DEFAULT '0',
-  `value` varchar(100) NOT NULL DEFAULT '0',
+  `year` char(4) NOT NULL DEFAULT '',
+  `month` char(2) NOT NULL DEFAULT '',
+  `week` char(2) NOT NULL DEFAULT '',
+  `day` char(2) NOT NULL DEFAULT '',
+  `value` varchar(100) NOT NULL DEFAULT '',
   `calcType` varchar(10) NOT NULL DEFAULT 'cron',
   `calculatedBy` varchar(30) NOT NULL DEFAULT '',
   `date` datetime DEFAULT NULL,