* [task#131534,doing,0.2h] add field for zt_history.

db/update20.8.sql

@@ -55,3 +55,6 @@ INSERT INTO `zt_workflowgroup` (`type`, `projectModel`, `projectType`, `name`, `
 ALTER TABLE `zt_doclib` ADD `orderBy` varchar(30) NOT NULL DEFAULT 'id_asc' AFTER `deleted`;
 
 UPDATE `zt_grouppriv` SET `method` = 'quick' WHERE `module` = 'doc' AND `method` = 'myView';
+
+ALTER TABLE `zt_history` ADD `oldValue` text NULL AFTER `old`;
+ALTER TABLE `zt_history` ADD `newValue` text NULL AFTER `new`;

db/zentao.sql

@@ -957,7 +957,9 @@ CREATE TABLE IF NOT EXISTS `zt_history` (
   `action` mediumint(8) unsigned NOT NULL default '0',
   `field` varchar(30) NOT NULL default '',
   `old` text NULL,
+  `oldValue` text NULL,
   `new` text NULL,
+  `newValue` text NULL,
   `diff` mediumtext NULL,
   PRIMARY KEY (`id`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8;