CREATETABLE`tb_content`(`id`bigint(20)NOTNULLAUTO_INCREMENT,`category_id`bigint(20)NOTNULLCOMMENT'内容类目ID',`title`varchar(200)DEFAULTNULLCOMMENT'内容标题',`sub_title`varchar(100)DEFAULTNULLCOMMENT'子标题',`title_desc`varchar(500)DEFAULTNULLCOMMENT'标题描述',`ur