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
https://www.nowcoder.com/practice/f9fa9dc1a1fc4130b08e26c22c7a1e5f
#create index idx_emp_no on salaries(emp_no); select * from salaries force index (idx_emp_no) where emp_no=10005;
