Question

我在python中执行此查询时遇到问题。我有一个IP数据库，它有3列startip，endip和country。现在我想要ip的位置。这是我的代码

def get_country(ip):

    try:
            conn = MySQLConnection(host='localhost', database='ipdb', user ='root', password='password')
            cursor = conn.cursor()
            query = 'SELECT * FROM db6 WHERE %s BETWEEN INET_ATON(startip) AND INET_ATON(endip)'
            ip_inint= ip2int(ip)
            cursor.execute(query,ip_inint)
            row = cursor.fetchone()
            while row is not None:
                    print " Start range %s end range %s country %s " %(row[0], row[1], row[2])
                    row = cursor.fetchone()
    except Error as error:
            print(error)

ip2int功能

def ip2int(addr):
    return struct.unpack("!I", socket.inet_aton(addr))[0]

我收到的错误是

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 '%s BETWEEN INET_ATON(startip) AND INET_ATON(endip)' at line 1

可能是什么问题？

Answer 1

您需要将元组传递给execute()：

cursor.execute(query, (ip_inint,))

列表也可能有效：

cursor.execute(query, [ip_inint])

另一种方法是在查询中使用带有命名变量的字典：

query = 'SELECT * FROM db6 WHERE %(ip_inint)s BETWEEN INET_ATON(startip) AND INET_ATON(endip)'
cursor.execute(query, {'ip_inint': ip_inint})

参考：http://dev.mysql.com/doc/connector-python/en/connector-python-api-mysqlcursor-execute.html

mysql在语法中显示错误

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