Python代码:
query是一个UPDATE查询,错误只是说明tuple有问题,它作为参数传递给IN子句
pyList是Python列表,DBOBJ是连接对象
pyTuple = tuple(pyList)
print(pyTuple)
pyTupleSQLFormat = DBOBJ.string_literal(pyTuple)
print(pyTupleSQLFormat)
query = "UPDATE seats SET isReserved = 1 WHERE screen_name='{}' AND seat_number IN %s".format(screenname)
args = (pyTupleSQLFormat,)
CurOBJ.execute(query,args)
控制台输出:Python
('B1', 'B2', 'A6', 'A7')
b"'(\\'B1\\', \\'B2\\', \\'A6\\', \\'A7\\')'"
(1064, "You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ''\\'(\\\\\\'B1\\\\\\', \\\\\\'B2\\\\\\', \\\\\\'A6\\\\\\', \\\\\\'A7\\\\\\')\\''' at line 1")
string_literal(...)
似乎在准备将对象插入char/text字段,而不是以可以附加到查询的方式对其进行字符串化可以通过dynamically building parameter placeholders将元组内容作为查询的附加参数传入。这样做的另一个好处是使用参数化来避免SQL注入和相关问题
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