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You need to display the last names of those employees who have the letter "A" as the second character in their names.Which SQL statement displays the required results?（）
A:SELECT last_name FROM EMP WHERE last_ name LIKE '_A%';
B:SELECT last_name FROM EMP WHERE last name ='*A%'
C:SELECT last_name FROM EMP WHERE last name ='_A%';
D:SELECT last_name FROM EMP WHERE last name LIKE '*A%'

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出自：Oracle认证

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