python - MySQL Python 更新行

Question

我正在尝试更新这行代码引发此错误的 MySQL 行中的数据。

for k in range(city_count):
    cur.execute("UPDATE hqstock SET citylastprice = '%s' WHERE id = '%s'"%(CITYPRICE[k],   tID[k]))

返回的错误：

File "C:\Python27\lib\site-packages\MySQLdb\cursors.py", line 201, in execute
    self.errorhandler(self, exc, value)
File "C:\Python27\lib\site-packages\MySQLdb\connections.py", line 36, in defaulterrorhandler
    raise errorclass, errorvalue
InterfaceError: (0, '')

这是我的表结构。

+--------------------+------------------+------+-----+---------+-------+
| Field              | Type             | Null | Key | Default | Extra |
+--------------------+------------------+------+-----+---------+-------+
| id                 |int(11) unsigned  | NO   | PRI | NULL    |       |
| barcode            | char(15)         | YES  |     | NULL    |       |
| citycurstock       | smallint(6)      | YES  |     | NULL    |       |
| citylastprice      | demical(4,2)     | YES  |     | NULL    |       |
| city               | varchar(60)      | YES  |     | NULL    |       |
+--------------------+------------------+------+-----+---------+-------+

有人知道我的查询语句有什么问题吗？或者为什么这不起作用？

Answer 1

试试这个 ：

for k in range(city_count):
    cur.execute("UPDATE hqstock SET citylastprice = '%s' WHERE id = '%s'"% (CITYPRICE[k],   tID[k]))
    cur.commit()