数据库中AS的使用意义

aS在数据库中后面能够起到一个别名的做用，这样能够方便给开发的人员的理解html   select username as 帐号 , password as 密码, mingzi as 名字, zhengjianhao as 证件号, dianhua as 电话, zhuceriqi as 注册日期, zhuangtai as 状态,

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