sql209
查找employees表emp_no与last_name的员工信息
https://www.nowcoder.com/practice/a32669eb1d1740e785f105fa22741d5c
select * from employees where emp_no % 2 != 0 and last_name != 'Mary' order by hire_date desc
查询结果：所以信息
查询来源：employees
查询条件：emp_no为奇数，last_name不为‘Mary’，按hire_date排逆序
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