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在SQL中更新无行(Update No Rows in SQL)

我有一个简单的SQL更新语句......

UPDATE [Table].[dbo].[Test]
SET [Field1] = @Param1
WHERE [Field2] = @Param2

假设我的数据集仅包含以下信息......

 Field 1     |     Field 2
-------------------------
 123         |     abc
 456         |     def
 789         |     ghi

我的问题就是这样......如果用户想要将'def'更新为'44',那么,哦,不! 他们不小心为'Param2'键上'露水'。 所以这是我们的参数集......

  • Param1:444
  • Param2:露水

根据我的测试,我得到了一个'命令已成功完成',因为从技术上来说它确实如此,但我的用户无法知道他们实际上没有更新任何内容。 是否有错误代码,返回代码,可以标记我向我的用户发送消息,让他们知道操作是成功的东西,但它没有更新任何东西,因为记录不存在?


I have a simple SQL update statement...

UPDATE [Table].[dbo].[Test]
SET [Field1] = @Param1
WHERE [Field2] = @Param2

Let's say my data set is ONLY the following information...

 Field 1     |     Field 2
-------------------------
 123         |     abc
 456         |     def
 789         |     ghi

My issue is as this... What if a user wants to update 'Field1' for 'def' to '444', but, oh no! They accidentally key 'dew' for 'Param2'. So this is our param set...

  • Param1: 444
  • Param2: dew

According to my testing I am getting a 'Command(s) completed successfully', because technically it did, but there is no way for my user to know that they didn't actually update anything. Is there an error code, return code, something that could flag me to send a message to my user letting them know the operation was a success, but it didn't update anything because the record didn't exist?


原文:https://stackoverflow.com/questions/22050091
更新时间:2022-07-06 15:07

最满意答案

如果您可以再次创建转储,则可以在转储时将--insert-ignore添加到命令行。

或者您可以尝试使用带有--forcemysqlimport命令,即使遇到MySQL错误,该命令也会继续。


If you can make the dump again you could add --insert-ignore to the command-line when dumping.

Or you can try using the mysqlimport command with --force,which will continue even if it encounters MySQL Errors.

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