mysql insert into where语句

Question

user表中有三个字段 uid time address现在要实现根据uid的值的不同来向不同的行中插入数据，怎么实现。是用where语句吗，怎么写呢。insert into user(time,address) values('$time','$address')；

Answer 1

" update `user` set `time` = '$time',`address`='$address' where uid = $uid " 用UPDATE语句！

Answer 2

要使用update或者select方法 insert实现不了