题解 | 获取employees中的first_name
SELECT a.first_name FROM( SELECT RIGHT(first_name,2) as first_name1,first_name FROM employees ) a ORDER BY a.first_name1 ASC
SELECT a.first_name FROM( SELECT RIGHT(first_name,2) as first_name1,first_name FROM employees ) a ORDER BY a.first_name1 ASC
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