广州分销系统开发,网站代码优化所有标签,dedecms企业网站模板,诚信网站认证必需做吗alter tablename alter column columnname varchar(100) not null 转载于:https://www.cnblogs.com/pw/archive/2007/01/08/615062.htmlalter tablename alter column columnname varchar(100) not null 转载于:https://www.cnblogs.com/pw/archive/2007/01/08/615062.html
