How to add a where clause in a MySQL Insert statement?

Question

This doesn\'t work:

INSERT INTO users (username, password) VALUES (\"Jack\",\"123\") WHERE id=\'1\';

Any ideas how to narrow insertion to a

Answer 1

In an insert statement you wouldn't have an existing row to do a where claues on? You are inserting a new row, did you mean to do an update statment?

update users set username='JACK' and password='123' WHERE id='1';