题解 | #给出employees表first_name#
给出employees表中排名为奇数行的first_name
https://www.nowcoder.com/practice/e3cf1171f6cc426bac85fd4ffa786594
select first_name first from( select first_name,row_number()over(order by first_name) rm from employees )t right join employees using(first_name) where rm%2=1