C++ (Qt)
    QSqlQuery query;
    query.prepare("update person set firstname = ? where id = ?");
    query.addBindValue(firstName);
    query.addBindValue(personId);
    return query.exec();
 

C++ (Qt)
    QSqlQuery query;
    query.prepare("INSERT INTO person (id, forename, surname) "
                  "VALUES (:id, :forename, :surname)");
    query.bindValue(":id", 1001);
    query.bindValue(":forename", "Bart");
    query.bindValue(":surname", "Simpson");
    query.exec();