fireld列表中的未知列-mysql python connector-insertion

问题描述

    c.execute('show tables')
    for i in c:
        print(i)
    t=input('enter exact table name')
    n=0
    c.execute('show columns from {}'.format(t))
    records=c.fetchall()
    print(records)
    for i in records:
        n=n+1
    a=1
    data=''
    while a!=0:
        for i in range(n):
            v=input("enter data")
            if i==n-1:
                data=data+v
            else:
                data=data+v+','
        print(data)
        print('insert into {} values{}'.format(t,data))
        c.execute('insert into {} values({})'.format(t,data))

在此代码中，我收到以下错误：

Traceback (most recent call last):
  File "C:\Users\subra\OneDrive\Desktop\netflix.py",line 62,in <module>
    create_input()
  File "C:\Users\subra\OneDrive\Desktop\netflix.py",line 51,in create_input
    c.execute('insert into {} values{}'.format(t,data))
  File "C:\Users\subra\AppData\Local\Programs\Python\python38\lib\site-packages\MysqL\connector\cursor.py",line 569,in execute
    self._handle_result(self._connection.cmd_query(stmt))
  File "C:\Users\subra\AppData\Local\Programs\Python\python38\lib\site-packages\MysqL\connector\connection.py",line 599,in cmd_query
    result = self._handle_result(self._send_cmd(ServerCmd.QUERY,query))
  File "C:\Users\subra\AppData\Local\Programs\Python\python38\lib\site-packages\MysqL\connector\connection.py",line 487,in _handle_result
    raise errors.get_exception(packet)
MysqL.connector.errors.ProgrammingError: 1054 (42S22): UnkNown column 'subru' in 'field list'

有人可以帮助我避免该错误的方法吗 我还确保只有1张桌子，那是我要插入的桌子

这是我得到的包括输入值的输出：

>>>('hellopython',)
>>>enter exact table namehellopython
>>>[('student',b'varchar(30)','YES','',None,''),('rollno','')]
>>>enter datasubru
>>>enter data29
>>>(subru,29)
>>>insert into hellopython values(subru,29)

***Traceback (most recent call last):
  File "C:\Users\subra\OneDrive\Desktop\netflix.py",in _handle_result
    raise errors.get_exception(packet)
MysqL.connector.errors.ProgrammingError: 1054 (42S22): UnkNown column 'subru' in 'field list'***

解决方法

您在数据周围缺少引号。

因此MySQL认为subru不是名称。相反，他认为这是列名

if i==n-1:
    data=data+"'"+v+ "'"
else:
    data=data+"'"+v+ "'"+','
print(data)
print('insert into {} values{}'.format(t,data))
c.execute('insert into {} values({})'.format(t,data))