Question

我正在尝试使用MySQLdb模块删除数据库中的记录。在https://dev.mysql.com/doc/connector-python/en/connector-python-api-mysqlcursor-execute.html中，我发现multi=True用于在执行中执行多个查询，但它会生成错误。有人能帮助我知道我所缺少的东西吗？

query = "DELETE FROM Service_Machine WHERE Id=(SELECT Id FROM Machines WHERE Id="+id+");" \
        "DELETE FROM Machine_Usage WHERE Id=(SELECT Id FROM Machines WHERE Id="+id+");" \
        "DELETE FROM Machines WHERE Id="+id+");
print(query)
self.cursor.execute(query, multi=True)

Answer 1

MySQLdb和 mysql-connector是两个用于Python的独立，独立的MySQL数据库适配器。

这两个适配器都符合DB API specification versions 2.0。 multi关键字参数不属于标准数据库API，也不属于MySQLdb API。

只有mysql-connector的{{3}}个multi关键字参数。

Answer 2

试试这个：

InSql1 = "DELETE FROM Service_Machine WHERE Id=(SELECT Id FROM Machines WHERE Id="+id+");" 
InSql2 = "DELETE FROM Machine_Usage WHERE Id=(SELECT Id FROM Machines WHERE Id="+id+");" 
InSql3 =  "DELETE FROM Machines WHERE Id="+id+");
#print(query)

self.cursor.execute(InSql1)
self.cursor.execute(InSql2)
self.cursor.execute(InSql3)
self.cursor.execute("Commit;")

Answer 3

请改用以下方法

MyDocument

为什么意外的关键字＆＃39; multi＆＃39;在Python的MySQLdb模块中？

3 个答案: