小编use*_*971的帖子

我如何在mysql查询的where子句中使用max()函数,我正在尝试:

 select firstName,Lastname,MAX(id) as max where id=max;

这给了我一个错误:

Unknown column 'max' in 'where clause'

任何帮助？提前致谢.

我正在尝试使用python-paramiko在远程计算机上执行sudo命令,当我执行命令时,我用3个流绑定它,我使用输入流来传递密码,但它不起作用,这是追溯结果:

Traceback (most recent call last):
File "<input>", line 1, in <module>
File "/usr/local/lib/python2.7/dist-packages/paramiko/file.py", line 314, in write
self._write_all(data)
File "/usr/local/lib/python2.7/dist-packages/paramiko/file.py", line 439, in _write_all
count = self._write(data)
File "/usr/local/lib/python2.7/dist-packages/paramiko/channel.py", line 1263,in _write
self.channel.sendall(data)
File "/usr/local/lib/python2.7/dist-packages/paramiko/channel.py", line 796, in sendall
raise socket.error('Socket is closed')
error: Socket is closed

这是我的python代码:

import paramiko
ssh = paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
ssh.connect('192.168.0.104', username='cdc',password='123456')
stdin, stdout, stderr = ssh.exec_command("sudo dmesg")
stdin.write("123456\n")
stdin.flush()
print stdout.readlines()
ssh.close()

有帮助吗？提前致谢