题解 | #获取employees中的first_name#
获取employees中的first_name
http://www.nowcoder.com/practice/74d90728827e44e2864cce8b26882105
LEFT(s,n)返回字符串 s 的前 n 个字符
RIGHT(s,n)返回字符串 s 的后 n 个字符
right
select first_name
from employees
order by right(first_name, 2)
substr / substring
select first_name
from employees
order by substr(first_name,-2)
