Discuz! Database Error

(1115) Unknown character set: 'COMMENT'
CREATE TABLE IF NOT EXISTS appbuilder_home_blog ( id INT(10) UNSIGNED NOT NULL AUTO_INCREMENT COMMENT 'ID', uid INT(10) UNSIGNED NOT NULL COMMENT '用户ID', username VARCHAR(255) NOT NULL COMMENT '用户名', subject VARCHAR(255) NOT NULL COMMENT '标题', blogid INT(10) UNSIGNED NOT NULL COMMENT '原日志ID', knowledge_id VARCHAR(50) NOT NULL COMMENT '知识库ID', document_id VARCHAR(50) NOT NULL DEFAULT '' COMMENT '知识库文档ID', dateline INT(10) UNSIGNED NOT NULL COMMENT '时间', status TINYINT(1) NOT NULL DEFAULT 0 COMMENT '处理状态(0=失败,1=成功)', upload_time INT(10) UNSIGNED NOT NULL COMMENT '上传时间', PRIMARY KEY (id), UNIQUE KEY blogid (blogid), KEY uid (uid), KEY knowledge (knowledge_id), KEY document (document_id) ) ENGINE=InnoDB DEFAULT CHARSET= COMMENT='AppBuilder日志上传知识库'

PHP Debug

No.FileLineCode
1forum.php71require(%s)
2source/module/forum/forum_viewthread.php1019include(%s)
3data/template/4_diy_forum_viewthread.tpl.php1hookscriptoutput()
4source/function/function_core.php1218hookscript()
5source/function/function_core.php1162include_once(%s)
6source/plugin/AIVita/knowledge.class.php136Basicinformation()
7source/plugin/AIVita/knowledge.class.php30discuz_database::query()
8source/class/discuz/discuz_database.php142db_driver_mysqli->query()
9source/class/db/db_driver_mysqli.php148db_driver_mysqli->halt()
10source/class/db/db_driver_mysqli.php223break()
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