Question

我有一个字典列表，在清理数据后作为参数传递给updateResource（）。

#method to clean the dictionary data
def getResource(self):
    try:
        for i in range(len(data)):
            sys_name = data[i]["system_name"]
            team = data[i]["fdc_inv_sa_team"]
            sys_name = re.sub('.1DC.com|.1dc.com|.1dc.COM |.1DC.COM\\b', '', str(sys_name))
            sys_name = str(sys_name.strip('"[]"'))
            team = str(team).replace('\\n', '')
            team = str(str(team).strip("[]"))
            data[i]["system_name"] = sys_name
            data[i]["fdc_inv_sa_team"] = team
            return data
    except Exception, e:
        logger.error("Error : ", str(e))

以下是将字典列表作为参数并在执行一些检查后更新数据库的方法。

#method to update the database with the dictionary key-value pair.
def updateResource(self, data):
    for i in range(len(data)):
        self.arg1 = data[i]["system_name"]
        self.arg2 = data[i]["fdc_inv_sa_team"]
        try:
            query1_row = self.cursor.execute(self.select_query %self.arg1)
            if query1_row:
                print "Success"
            else:
                self.cursor.execute(self.insert_query, (self.arg1, self.arg2, "Resource Not Present In Echo_Resource Table", \
                                                    str(datetime.now())))
                self.cnx.commit()

        except MySQLdb.Error as e:
            logger.error("Error %d: %s" % (e.args[0],e.args[1]))
        except Exception, e:
            logger.error("Error : ", str(e))

以下是示例查询 -

select_query = "SELECT resource_id, resource_name, support_contact_id \
              FROM echo_resource \
             WHERE resource_name = (%s) \
               AND inactive = 0;"


update_query = "UPDATE echo_resource \
               SET support_contact_id = ( \
                   SELECT contact_id FROM contacts WHERE last_name = (%s)), \
                   update_date = (%s) \
             WHERE resource_name = (%s);"


contact_echo_resource_query = "SELECT 1 \
                  FROM echo_resource \
                 WHERE resource_name = (%s) \
                   AND support_contact_id = (SELECT contact_id \
                                               FROM contacts \
                                              WHERE last_name = (%s));"

contacts_query = "SELECT 1 \
                FROM contacts \
               WHERE last_name = (%s);"

insert_query = "INSERT INTO echo_resource_log VALUES(%s, %s, %s, %s);"

echo_resource表的结构 -

resource_id varchar(40) NO  PRI 
resource_name   varchar(255)    YES MUL 
description longtext    YES     
ip_address  varchar(40) YES     
resource_tag    varchar(40) YES     
support_contact_id  int(11) YES MUL 
last_found_date_time    datetime    YES

错误讯息 -

[2017-07-17 18:14:31,794] {updateEchoResource.py:82} DEBUG - Arguments for the queries : n3bvap049, X2Linux_NSS
[2017-07-17 18:14:31,795] {updateEchoResource.py:121} ERROR - Error 1054: Unknown column 'n3bvap049' in 'where clause'

Answer 1

很明显，因为您在列值周围缺少单引号''，因此它也被视为列名

WHERE resource_name = (%s) \
                      ^...here

因此，您必须更好地使用查询（OR）连接您的值，并使用参数化查询

MySQL错误 - 错误1054：'where子句'中的未知列

1 个答案: