'SQL Insert Query With Condition Exception [closed]

I have this query:

 String requete = "INSERT INTO reduction(newPrix) VALUES (?) "
                        + "WHERE id_prom=? AND id_prod=?";

I am getting an exception:

You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'WHERE id_prom=2 AND id_prod=6' at line 1

I'm wondering why the INSERT query was failing. Any advise appreciated.



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