我想在Python 2.7中使用MySQLdb插入值到SQL表中的列。该命令将列表插入1列时遇到问题。插入值到SQL列与MySQL-python
我有一个名为“名”简单的表如下所示:
+--------+-----------+----------+--------+
| nameid | firstname | lastname | TopAdd |
+--------+-----------+----------+--------+
| 1 | Cookie | Monster | |
| 2 | Guy | Smiley | |
| 3 | Big | Bird | |
| 4 | Oscar | Grouch | |
| 5 | Alastair | Cookie | |
+--------+-----------+----------+--------+
这里是我创建的表:
CREATE TABLE `name` (
`nameid` int(11) NOT NULL AUTO_INCREMENT,
`firstname` varchar(45) DEFAULT NULL,
`lastname` varchar(45) DEFAULT NULL,
`TopAdd` varchar(40) NOT NULL,
PRIMARY KEY (`nameid`)
) ENGINE=InnoDB AUTO_INCREMENT=16 DEFAULT CHARSET=utf8
这是我如何填写表格:
INSERT INTO `test`.`name`
(`firstname`,`lastname`)
VALUES
("Cookie","Monster"),
("Guy","Smiley"),
("Big","Bird"),
("Oscar","Grouch"),
("Alastair","Cookie");
免责声明:上述MySQL示例的原始来源是here。
这里是我创建了一个名为TopAdd的新列:
ALTER TABLE name ADD TopAdd VARCHAR(40) NOT NULL
我现在有,我想插入列TopAdd作为列的值5个值的列表。这是清单。
vals_list = ['aa','bb','cc','dd','ee']
这是我曾尝试(内环路UPDATE语句):
vals = tuple(vals_list)
for self.ijk in range (0,len(self.vals)):
self.cursor.execute ("UPDATE name SET TopAdd = %s WHERE 'nameid' = %s" % (self.vals[self.ijk],self.ijk+1))
我收到以下错误信息:
Traceback (most recent call last):
File "C:\Python27\mySQLdbClass.py", line 70, in <module>
[Finished in 0.2s with exit code 1]main()
File "C:\Python27\mySQLdbClass.py", line 66, in main
db.mysqlconnect()
File "C:\Python27\mySQLdbClass.py", line 22, in mysqlconnect
self.cursor.execute ("UPDATE name SET TopAdd = %s WHERE 'nameid' = %s" % (self.vals[self.ijk],self.ijk+1))
File "C:\Python27\lib\site-packages\MySQLdb\cursors.py", line 205, in execute
self.errorhandler(self, exc, value)
File "C:\Python27\lib\site-packages\MySQLdb\connections.py", line 36, in defaulterrorhandler
raise errorclass, errorvalue
_mysql_exceptions.OperationalError: (1054, "Unknown column 'aa' in 'field list'")
是否有插入这些值分成的方式带有循环的列或直接作为列表?
你可能想修复这个问题的DDL;如果定义的表没有“TopAdd”的缺省值,那么你的INSERT查询将失败。由于稍后添加该列,它看起来应该不包含在原始的“CREATE TABLE”语句中。 – Air 2014-12-02 16:38:45