首先我们输入这样一条指令:
![](/Images/OutliningIndicators/None.gif)
![](/Images/OutliningIndicators/None.gif)
input 命令可以接着上一条指令的后面添加语句,比如在上述语句运行后输入:
![](/Images/OutliningIndicators/None.gif)
便可得到如下指令:
![](/Images/OutliningIndicators/None.gif)
![](/Images/OutliningIndicators/None.gif)
![](/Images/OutliningIndicators/None.gif)
ln 命令用于指定对以输入的第n行语句进行操作,比如在上述语句运行后输入:
![](/Images/OutliningIndicators/None.gif)
SELECT emp_id, emp_name
(语句前有“*”表示)
a 命令用于直接在当前行的末尾加上字符,比如在上述语句运行后输入:
![](/Images/OutliningIndicators/None.gif)
则执行的指令变为:
![](/Images/OutliningIndicators/None.gif)
![](/Images/OutliningIndicators/None.gif)
![](/Images/OutliningIndicators/None.gif)
c 命令用于修改当前语句中的字符,比如在上述语句运行后输入:
![](/Images/OutliningIndicators/None.gif)
![](/Images/OutliningIndicators/None.gif)
![](/Images/OutliningIndicators/None.gif)
![](/Images/OutliningIndicators/None.gif)
del n 命令用于删除第n行指令,比如在上述语句运行后输入:
![](/Images/OutliningIndicators/None.gif)
则执行的指令变为:
![](/Images/OutliningIndicators/None.gif)
![](/Images/OutliningIndicators/None.gif)