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demo3.py insert问题 #1

@zhu-jie

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@zhu-jie

书中例子
sql = 'INSERT INTO students(id, name, age) values(%ss, %ss, %ss)'
实际插入时会出现异常,改为
sql = 'INSERT INTO students(id, name, age) values(%s, %s, %s)'
可正常插入,请问是数据库版本问题吗,还是印刷错误引起

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