单选题
发布日期:2020-04-10
SELECT &1, &2 FROM &3 WHERE last_name = '&8';
SELECT &1, '&2' FROM &3 WHERE '& last_name = '&8';
SELECT &1, &2 FROM &3 WHERE last_name = '&8';
SELECT &1, '&2' FROM EMP WHERE last_name = '&8';
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