MySQL:如何复制行，但更改一些字段?

2021-11-20 00:00:00 sql mysql

我有很多行要复制，但我需要更改一个字段.

I have a large number of rows that I would like to copy, but I need to change one field.

我可以选择要复制的行:

I can select the rows that I want to copy:

select * from Table where Event_ID = "120"

现在我想复制所有这些行并创建新行，同时将 Event_ID 设置为 155.我怎样才能做到这一点?

Now I want to copy all those rows and create new rows while setting the Event_ID to 155. How can I accomplish this?

推荐答案

INSERT INTO Table
          ( Event_ID
          , col2
           ...
          )
     SELECT "155"
          , col2
           ...
      FROM Table WHERE Event_ID = "120"

这里的 col2, ... 代表表中的其余列(除了 Event_ID 之外的那些).

Here, the col2, ... represent the remaining columns (the ones other than Event_ID) in your table.

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