LOAD DATA LOCAL INFILE上的Python2.7 MySQL Connector错误

Question

我正在尝试使用Python和MySQL Connector将普查数据动态加载到mysql数据库（从.csv文件）中。

我不知道为什么我得到错误：

Traceback (most recent call last):
  File "miner.py", line 125, in <module>
    cursor.execute(add_csv_file, csv_info)
  File "/Library/Python/2.7/site-packages/mysql/connector/cursor.py", line 393, in execute
    self._handle_result(self._connection.cmd_query(stmt))
  File "/Library/Python/2.7/site-packages/mysql/connector/connection.py", line 586, in cmd_query
statement))
  File "/Library/Python/2.7/site-packages/mysql/connector/connection.py", line 508, in _handle_result
    raise errors.get_exception(packet)
mysql.connector.errors.ProgrammingError: 1064 (42000): 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 '/Users/afink/Documents/Research/Current Papers & Books/Youth Assessm' at line 1

执行前输出的字符串在同一用户下的MySQL命令行界面中运行良好。

似乎应该是一个简单的问题，但是我被卡住了！

def db_connect():
    config = {
        'user': 'username',
        'password': 'pass',
        'host': 'localhost',
        'database': 'uscensus',
        'raise_on_warnings': True,
    }

    from mysql.connector import errorcode
    try:
      cnx = mysql.connector.connect(**config)
      return cnx
    except mysql.connector.Error as err:
      if err.errno == errorcode.ER_ACCESS_DENIED_ERROR:
        print("Something is wrong with your user name or password")
      elif err.errno == errorcode.ER_BAD_DB_ERROR:
        print("Database does not exist")
      else:
        print(err)
    else:
      cnx.close()


cursor = cnx.cursor()

os.chdir("./")
for files in glob.glob("*.csv"):

    add_csv_file = ('''load data local infile '%(cwd)s/%(file_name)s' into table %(table_name)s 
                    columns terminated by ',' 
                    optionally enclosed by '\"'
                    escaped by '\"'
                    lines terminated by '\\n';''')

    # Insert CSV file information
    csv_info = {
        'cwd': os.getcwd(),
        'file_name': files,
        'table_name': 'SF1_' + files[2:-8],
    }


    print add_csv_file % csv_info # Temporary Debug

    cursor.execute(add_csv_file, csv_info)

# Make sure data is committed to the database
cnx.commit()
cursor.close()
cnx.close()

提前谢谢你的帮助！

Answer 1

通过在连接中添加适当的客户端标志，可以轻松解决此问题，如下所示：

import mysql.connector
from mysql.connector.constants import ClientFlag

cnx = mysql.connector.connect(user='[username]', password='[pass]', host='[host]', client_flags=[ClientFlag.LOCAL_FILES])
cursor = cnx.cursor()

这将授予MySQL访问您计算机上本地文件的权限，然后以下LOAD将起作用：

LoadSQL = """LOAD DATA LOCAL INFILE '%s'
    INTO TABLE %s
    FIELDS TERMINATED BY '\t'
    LINES TERMINATED BY '\n'
    IGNORE 1 LINES
    (field1, field2, field3, field4)""" % (csvfile, tabl_name)
cursor.execute(LoadSQL)
cnx.commit()
cursor.close()
cnx.close()