mysql语句这样有错误问题出在哪？

sql语句：

String tel = obj.getString("tel");
String email = obj.getString("email");

sqls.add("update from user loginName='"+uloginName+"',userName='"+userName+"' where loginName='"+loginName+"'");

sqls.add("update from userinfo loginName='"+uloginName+"',gender='"+gender+"',birthday='"+birthday+"',address='"+address+"', mobile='"+mobile+"',tel='"+tel+"',email='"+email+"',quanpin='"+CHNUtil.getFullSpell(userName)+"',jianpin='"+CHNUtil.getFirstSpell(userName)+"' where loginName='"+loginName+"'");

错误信息：

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'from userinfo loginName='s123',gender='0',birthday='2015-12-10',address='1111',m' at line 1

我要往两个表里更改这些信息，但是出错了。不知道怎么错了