用变量替换表名.使用python和mysql连接器
作者:互联网
我想动态更改我插入数据的表的变量名称.
这目前有效,
def dataEntry(subreddit, _title, _post_url, _imageURL):
cnx = mysql.connector.connect(**config)
c = cnx.cursor()
insert = ("""INSERT INTO FoodPorn
(subreddit, title, post_url, imageURL)
VALUES (%s, %s, %s, %s)""")
data_value = (subreddit, _title, _post_url, _imageURL)
c.execute(insert, data_value)
cnx.commit()
c.close()
cnx.close()
dataEntry("fake", "fake", "fake", "fake")
但是当我尝试为这个案例中的表名“FoodPorn”做同样的事情时,但对于动态的一个,比如在这个例子中的MachinePorn,
def dataEntry(subreddit, _title, _post_url, _imageURL):
cnx = mysql.connector.connect(**config)
c = cnx.cursor()
insert = ("""INSERT INTO subredditName
(subreddit, title, post_url, imageURL)
VALUES (%s, %s, %s, %s, %s)""")
data_value = ("MachinePorn", subreddit, _title, _post_url, _imageURL)
c.execute(insert, data_value)
cnx.commit()
c.close()
cnx.close()
dataEntry("fake", "fake", "fake", "fake")
我收到这个错误,
mysql.connector.errors.ProgrammingError: 1146 (42S02): Table 'sytykr.subredditname' doesn't exist
这让我相信我不能这样做,所以我想问我怎么能这样做,所以我最终可以传递表中的变量名,而不是每次都要硬编码.
解决方法:
显示mysql连接器的异常告诉您数据库中不存在该表.
另外,你试图使用’MachinePorn’作为参数,但你没有在查询中定义它,它是硬编码的’subredditName’.
我认为您应该将数据库定义为查询中的另一个参数,它将运行良好:
def dataEntry(subreddit, _title, _post_url, _imageURL):
cnx = mysql.connector.connect(**config)
c = cnx.cursor()
insert = cnx.escape_string("INSERT INTO MachinePorn (subreddit, title, post_url, imageURL) VALUES (%s, %s, %s, %s)")
data_value = (subreddit, _title, _post_url, _imageURL)
c.execute(insert, data_value)
cnx.commit()
c.close()
cnx.close()
dataEntry("fake", "fake", "fake", "fake")
标签:mysql-connector,python,mysql 来源: https://codeday.me/bug/20190928/1825399.html