1.select first_name from hr.employees where department_id in not (10,20);2.select first_name from hr.employees where first_name between not 'A' and 'C';3.select first_name from hr.employees where first_name like not 'A%';4.select first_name from hr.employees where commission_pct is not null;
![正しく実行されるものは? [ITキャパチャージ データベース] - IT、IT製品の情報なら【キーマンズネット】](https://cdn-ak-scissors.b.st-hatena.com/image/square/73d33536a70c84da168542d0837360d195fd9473/height=288;version=1;width=512/https%3A%2F%2Fimage.itmedia.co.jp%2Fimages%2Flogo%2F1200x630_500x500_kn.gif)