mySql将行复制到键值已更改的同一表中(不覆盖现有表) [英] mySql copy rows into same table with key value changed (not overwriting existing)

问题描述

如何复制mySql表中的选定行并在键值已更改的情况下插入.我可以在同一查询中进行选择并插入吗?

确切地说，我想要的内容如下:

表格列，ID和ISO3是键:

+----+------+-------------------------+
| ID | ISO3 |          Text           |
+----+------+-------------------------+
|  1 | ENU  | A text in english       |
|  2 | ENU  | Another text in english |
|  3 | ENU  | bla bla                 |
|  1 | JPN  | 与えられた枠             |
+----+------+-------------------------+

插入后，我希望我的表看起来像这样:

+----+------+---------------------------+
| ID | ISO3 |           Text            |
+----+------+---------------------------+
|  1 | ENU  | A text in english         |
|  2 | ENU  | Another text in english   |
|  3 | ENU  | bla bla                   |
|  1 | JPN  | 与えられた枠               |
|  2 | JPN  | Another text in english   |
|  3 | JPN  | bla bla                   |
+----+------+---------------------------+

解决方案

INSERT INTO your_table (ID, ISO3, TEXT) 
SELECT ID, 'JPN', TEXT
FROM your_table 
WHERE ID IN ( list_of_ id's )

如果要在一个单元格中更改值，只需对值进行硬式输入即可，而不是从表中进行选择(就像我对'JPN '所做的那样). /p>

How do I copy a selection of rows from a mySql table and insert with just the key value changed. Can I do a select and insert in same query?

To be precise, what I want would look like this:

Table cols, ID and ISO3 are keys:

+----+------+-------------------------+
| ID | ISO3 |          Text           |
+----+------+-------------------------+
|  1 | ENU  | A text in english       |
|  2 | ENU  | Another text in english |
|  3 | ENU  | bla bla                 |
|  1 | JPN  | 与えられた枠             |
+----+------+-------------------------+

After the insert I want my table to look like this:

+----+------+---------------------------+
| ID | ISO3 |           Text            |
+----+------+---------------------------+
|  1 | ENU  | A text in english         |
|  2 | ENU  | Another text in english   |
|  3 | ENU  | bla bla                   |
|  1 | JPN  | 与えられた枠               |
|  2 | JPN  | Another text in english   |
|  3 | JPN  | bla bla                   |
+----+------+---------------------------+

解决方案

INSERT INTO your_table (ID, ISO3, TEXT) 
SELECT ID, 'JPN', TEXT
FROM your_table 
WHERE ID IN ( list_of_ id's )

If you want to change a value in one cell, just hard-type the value instead of selecting from table (like I did with 'JPN').

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