DROP TABLE IF EXISTS `bb_bt_dlstatus_mrg`;
CREATE TABLE IF NOT EXISTS `bb_bt_dlstatus_mrg` (
`user_id` mediumint(9) NOT NULL default '0',
`topic_id` mediumint(8) unsigned NOT NULL default '0',
`user_status` tinyint(1) NOT NULL default '0',
`last_modified_dlstatus` timestamp NOT NULL default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP,
KEY `user_topic` (`user_id`,`topic_id`),
KEY `topic_id` (`topic_id`)
) ENGINE=MRG_MyISAM DEFAULT CHARSET=utf8 UNION=(`bb_bt_dlstatus_main`,`bb_bt_dlstatus_new`);