Question

我有304MB文本文件，每行包含逗号（，）分隔值，我逐行读取文件并使用for循环插入值，但是在插入21行后我不断收到此错误。这是代码

import MySQLdb

myfile = open('/home/vaibhav/Desktop/question1.csv', 'r')

db = MySQLdb.connect(host="localhost", 
                 user="root", 
                  passwd="admin", 
                  db="question1agg") 

for line in myfile:

     my_line_list = line.split(',')
     string = ''
     for value in my_line_list:
            string = string + "'" + value + "',"
            query_string = string[:-1]
      final_query = "insert into question1 values"+"("+query_string+");"
      cur = db.cursor()
      cur.execute(final_query)
      db.commit()
db.close()

这就是我得到的错误

 Traceback (most recent call last):
 File "da.py", line 19, in <module>
   cur.execute(final_query)
   File "/usr/lib/python2.7/dist-packages/MySQLdb/cursors.py", line 174, in execute
   self.errorhandler(self, exc, value)
   File "/usr/lib/python2.7/dist-packages/MySQLdb/connections.py", line 36, in        defaulterrorhandler
   raise errorclass, errorvalue
_mysql_exceptions.ProgrammingError: (1064, "You have an error in your SQL syntax; check    the manual that corresponds to your MySQL server version for the right syntax to use near 's Solids','Men','NULL','Solid','/Products/Legwear','/Products/Legwear/AmericanEs' at line 1")

Answer 1

看起来你的一个值中有一个撇号。你需要逃避撇号以避免这个错误。

例如，您有这样的值：

That's right!

所以你的插图看起来像这样：

insert into question1 values('value1','That's right!','value2');

你应该逃避撇号来制作这样的插入物：

insert into question1 values('value1','That''s right!','value2');

Answer 2

在你的一条线上看起来有一个撇号搞砸了MySQL。从错误消息 -

's Solids','Men','NULL','Solid'

您的问题及其解决方案在此处得到了很好的解释 - Python MySQL escape special characters

使用for循环python在mysql表中插入值

2 个答案: