python - Python 中的 MySQL 连接器不允许 LOAD DATA INFILE 语法

Question

我正在尝试将文本文件发送到 MySQL 数据库中。我正在尝试使用 python 3.2 中的 mysql 连接器来做到这一点。问题是关于 LOAD DATA INFILE 语法。你可以在上面找到我的代码。我的第一个问题是无论如何都可以解决这个问题。请注意，我尝试了 local-infile =1 选项，而 Python 不允许此选项。其次，有没有其他方法可以将这些数据作为一个块发送到 mysql 数据库中？

from __future__ import print_function
import os
import mysql.connector
from mysql.connector import errorcode
config = {
    'user':'root',
    'password':'3778',
##  'host':'localhost',
#   'database':'microstructure',
#    'local-infile':'1',
    }


DB_NAME = 'EURUSD'
TABLES ={}
TABLES['microstructure']=(
    "CREATE TABLE `microstructure` ("
   # "  `p_id` int NOT NULL AUTO_INCREMENT,"
    "  `ticker` varchar(255),"
    "  `time` date,"
    "  `last_price` decimal(6,3)"
    ") ENGINE=InnoDB")

TABLES['cumulative']=(
    "CREATE TABLE `cumulative` ("
    "  `p_id` int NOT NULL AUTO_INCREMENT,"
    "  `ticker` varchar(255),"
    "  `time` date,"
    "  `last_price` decimal(6,3),"
    "  PRIMARY KEY(`p_id`)"
    ") ENGINE=InnoDB")

cnx = mysql.connector.connect(**config)
cursor = cnx.cursor()
path_txt = 'C:/Users/ibrahim/Desktop/testfile.txt'

def create_database(cursor):
    try:
        cursor.execute(
            "CREATE DATABASE IF NOT EXISTS {} DEFAULT CHARACTER SET 'utf8'".format(DB_NAME))
    except mysql.connector.Error as err:
            print("Failed creating database: {}".format(err))
            exit(1)
try:
    cnx.database = DB_NAME
except mysql.connector.Error as err:
    if err.errno == errorcode.ER_BAD_DB_ERROR:
        create_database(cursor)
        cnx.database=DB_NAME
    else:
        print(err)
        exit(1)

for name, ddl in TABLES.items():
    try:
        print("Creating table {}: ".format(name), end ='')
        cursor.execute(ddl)
    except mysql.connector.Error as err:
        if err.errno == errorcode.ER_TABLE_EXISTS_ERROR:
            print("Already exists")
        else:
            print(err)

    else:
        print("OK")

cursor.execute("SET @@global.local_infile = 1")

cursor.execute("LOAD DATA LOCAL INFILE 'testfile.txt' into table microstructure")

os.system("start")

cursor.close()        

Answer 1

我刚看到这篇旧帖子，但这些答案都没有解决我的问题。

我看到了 here有一个专用于 LOCAL DATA INFILE 的参数:allow_local_infile=True
所以可以这样做:

mysql.connector.connect(user='[username]', password='[pass]', host='[host]', allow_local_infile=True)