OCP-1Z0-051 第142題 巢狀子查詢的應用
Evaluate the following query:
SQL> SELECT prod_name
FROM products
WHERE prod_id IN
(SELECT prod_id
FROM products
WHERE prod_list_price =
(SELECT MAX(prod_list_price)
FROM products
WHERE prod_list_price <
(SELECT MAX(prod_list_price) FROM products)));
A. It produces an error.
B. It shows the names of all products in the table.
C. It shows the names of products whose list price is the second highest in the table.
D. It shows the names of all products whose list price is less than the maximum list price.
答案：C
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