plugins/sys/share/db/sql/sys_sessions.sql.php
<?php
return '
`id` varchar(32) NOT NULL DEFAULT \'\',
`user_id` int(10) unsigned NOT NULL,
`user_group` int(10) unsigned NOT NULL,
`start_time` int(10) unsigned NOT NULL DEFAULT \'0\',
`last_time` int(10) unsigned NOT NULL DEFAULT \'0\',
`type` enum(\'user\',\'admin\') NOT NULL,
`host_name` varchar(128) NOT NULL,
`data` longtext,
PRIMARY KEY (`id`),
KEY `user_id` (`user_id`),
KEY `start_time` (`start_time`)
';