题解 | #针对上面的salaries表emp_no字段创建索引idx_emp_no#
针对上面的salaries表emp_no字段创建索引idx_emp_no
http://www.nowcoder.com/practice/f9fa9dc1a1fc4130b08e26c22c7a1e5f
答案
select * from salaries force index (idx_emp_no) where emp_no = 10005;
知识点
https://blog.csdn.net/muskter/article/details/79052884
https://www.cnblogs.com/ll409546297/p/9060820.html
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