我正在尝试在Python 2.7中使用MySQLdb将值插入SQL表的列中。我在将列表插入1列的命令中遇到问题。
我有一个名为“ name”的简单表,如下所示:
+--------+-----------+----------+--------+
| nameid | firstname | lastname | TopAdd |
+--------+-----------+----------+--------+
| 1 | Cookie | Monster | |
| 2 | Guy | Smiley | |
| 3 | Big | Bird | |
| 4 | Oscar | Grouch | |
| 5 | Alastair | Cookie | |
+--------+-----------+----------+--------+
这是我创建表格的方式:
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
这是我填充表格的方式:
INSERT INTO `test`.`name`
(`firstname`,`lastname`)
VALUES
("Cookie","Monster"),
("Guy","Smiley"),
("Big","Bird"),
("Oscar","Grouch"),
("Alastair","Cookie");
免责声明:上述MySQL示例的原始来源为here。
这是我创建名为TopAdd的新列的方法:
ALTER TABLE name ADD TopAdd VARCHAR(40) NOT NULL
现在,我有5个值的列表,我想将该列的值插入到TopAdd列中。这是清单。
vals_list = ['aa','bb','cc','dd','ee']
这是我尝试过的(循环内的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))
我收到以下错误消息:
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'")
有没有一种方法可以将这些值通过循环或直接作为列表插入到列中?
最佳答案
尝试这个:
vals_list = ['aa','bb','cc','dd','ee']
对于i,enumerate(vals_list)中的j:
self.cursor.execute(("UPDATE test.name SET TopAdd = '%s' WHERE nameid = %s" % (str(j),int(i+1))