Question

所以我试图从csv文件中提取列，并将它们输入到mysql表中。

但是，我遇到了以下针对“标题”的错误（第3列，第1行）

 'Using Adversarial Autoencoders for Multi-Modal Automatic Playlist Continuation, ' at line 1")

csv数据

1038819,Discoverable,Using Adversarial Autoencoders for Multi-Modal Automatic Playlist Continuation,Conference Proceeding,"Vagliano, Iacopo; Galke, Lukas; Mai, Florian; Scherp, Ansgar",10.1145/3267471.3267476,
1037162,Discoverable,Performance Comparison of Ad-hoc Retrieval Models over Full-text vs. Titles of Documents (Forthcoming),Conference Proceeding,"Saleh, Ahmed; Beck, Tilman; Galke, Lukas; Scherp, Ansgar",,1893/28014

我认为这与作者专栏使用'，'有关，并且其他地方的空格和符号完全混合在一起。

Python

import pymysql
import csv

csv_data= csv.reader(open('Book1.csv'))

conn=pymysql.connect("localhost","root", "root", "test")
cursor=conn.cursor()
print ("Done")
for row in csv_data:

    cursor.execute('INSERT INTO output (Output_ID, Status, Title, Type, Authors, DOI, Handle ) VALUES({}, {}, {}, {}, {}, {}, {})'.format(row[0], row[1], row[2], row[3], row[4], row[5], row[6]))
    conn.commit()

cursor.close()

Answer 1

请注意，当您使用字符串格式编写SQL时，结果在要插入的值周围缺少引号：

In [215]: 'INSERT INTO output (Output_ID, Status, Title, Type, Authors, DOI, Handle ) 
           VALUES({}, {}, {}, {}, {}, {}, {})'.format('manchego', 'brie', 'gruyere', 'stilton', 'camembert', 'bleu', 'asiago')

Out[215]: 'INSERT INTO output (Output_ID, Status, Title, Type, Authors, DOI, Handle ) 
           VALUES(manchego, brie, gruyere, stilton, camembert, bleu, asiago)'

正确的SQL将需要引号

INSERT INTO output (Output_ID, Status, Title, Type, Authors, DOI, Handle )
VALUES("manchego", "brie", "gruyere", "stilton", "camembert", "bleu", "asiago")

最佳做法是使用parametrized sql：而不是自己添加正确的报价单：

sql = '''INSERT INTO output (Output_ID, Status, Title, Type, Authors, DOI, Handle)
         VALUES(%s, %s, %s, %s, %s, %s, %s)'''
cursor.execute(sql, row)

请注意，cursor.execute(sql, row) can accept 2 arguments，sql和row。它们作为单独的参数而不是作为一个字符串sql % row传递。 cursor.execute函数将为您处理正确的报价。这不仅对您更简单，而且还可以防止SQL injection。

将csv文件中的数据插入到mysql表中

1 个答案: