Which of the following SQL statements is not valid? a. SELECT TO_CHAR (orderdate, '99/9999') FROM orders; b.
Question:
Which of the following SQL statements is not valid?
a. SELECT TO_CHAR (orderdate, '99/9999')
FROM orders;
b. SELECT INITCAP (firstname), UPPER (lastname)
FROM customers;
c. SELECT cost, retail,
TO_CHAR(retail-cost, '$999.99') profit
FROM books;
d. All of the above
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