Question

您好我正在尝试使用Python参数化MySQL查询。有时我传入的值是NoneType或NULL。在mysql中使用NULL或NoneType值时，为什么%s或%d不适用于下面的插入查询？

class DBWork(object):
    def __init__(self, attackerip=None, victimip=None, shunlen=15, shuncount=1, shunreason=None, shunepoch=None,
                 shunerrorbool=False, shunerror=None, paloaddedepoch=None, paloremovedepoch=None,
                 lastshunlen=15):
        self.Id = None
        self.attackerip = attackerip
        self.victimip = victimip
        self.shunlen = shunlen
        self.shuncount = shuncount
        self.shunreason = shunreason
        self.shunepoch = shunepoch
        self.shundatetime = 'need to build this'
        self.shunerrorbool = shunerrorbool
        self.shunerror = shunerror
        self.paloaddedepoch = paloaddedepoch
        self.paloremovedepoch = paloremovedepoch
        self.lastshunlen = lastshunlen
        self.shunlen = shunlen
        self.newshunlen = lastshunlen * shuncount

...

    def HistoryInsert(self):
        insert_query = (
            "INSERT INTO `autoshun`.`shunhistory` "
            "(Id, attackerip, victimip, shunlen, shuncount, shunreason, shunepoch, shundatetime, shunerrorbool, "
            "shunerror, paloaddedepoch, paloremovedepoch) "
            "VALUES "
            "(NULL, %s, %s, %d, %d, %s, %s, %s, %s, %s, %s, %s );"
        )
        values = [None, self.attackerip, self.victimip, self.shunlen, self.shuncount, self.shunreason, self.shunepoch,
                  self.shundatetime, self.shunerrorbool, self.shunerror, self.paloaddedepoch, self.paloremovedepoch]
        return self.cur.execute(insert_query, values)


sample = DBWork(attackerip='1.1.1.15', victimip='2.2.2.2', shunreason='hax', shuncount=1, )
#
sample.DBConnect()
sample.HistoryInsert()

（values列表的调试）

<type 'list'>: [None, '1.1.1.15', '2.2.2.2', 15, 1, 'hax', None, 'need to build this', False, None, None, None] 


/usr/bin/python2.7 /home/dobbs/PycharmProjects/autoshun/sqlobjects.py
Traceback (most recent call last):
  File "/home/dobbs/PycharmProjects/autoshun/sqlobjects.py", line 100, in <module>
    sample.HistoryInsert()
  File "/home/dobbs/PycharmProjects/autoshun/sqlobjects.py", line 93, in HistoryInsert
    return self.cur.execute(insert_query, values)
  File "/usr/lib64/python2.7/site-packages/pymysql/cursors.py", line 164, in execute
    query = self.mogrify(query, args)
  File "/usr/lib64/python2.7/site-packages/pymysql/cursors.py", line 143, in mogrify
    query = query % self._escape_args(args, conn)
TypeError: %d format: a number is required, not str

Mysql参数化NULL值查询

0 个答案: