SQL퀘스트

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9. select customer_id
   from orders
   where amount > 1;
10. select *
    from orders
    where order_date > '2023-11-02' and amount > 1;
11. select *
    from orders
    where amount < 3 and shipping_fee > 15000;
12. select *
    from orders
    order by shipping_fee desc;