获得徽章 0
- # Mac terminal计算机名或者用户名太长怎么办
```
sudo vi /etc/bashrc
把`PS1='\h:\W \u\$ '`换成`PS1='\w>'`
```等人赞过
评论11 - 这段话该如何理解？The index may also be used even if the ORDER BY does not match the index exactly, as long as all unused portions of the index and all extra ORDER BY columns are constants in the WHERE clause. If the index does not contain all columns accessed by the query, the index is used only if index access is cheaper than other access methods.展开评论点赞
hellogithub.com