0

如何从表中的某个列复制多条记录并插入以使用 SQL 命令在 mysql 中使用不同选项更新列中的另一个表

列：“targetCategory”条件所有记录包含Top/name_test2、Top/name_test2/%

列“标题”，“父主题参考数据注意：数据有根不同，不导入示例：Top/name_test752

        table_exemple1


       ===========================================================================
       |    aliasID    |    title     |    targetCategory     |    parentTopic    |
       ===========================================================================
No     |    1          | name_test752 | Top/name_test752/tel  | Top/name_test752  |
       ---------------------------------------------------------------------------
|-<----|    2          | name_test2   | Top/name_test2        | Top/name_test2    |
|      ---------------------------------------------------------------------------
||-<---|    3          | 5            | Top/name_test2/etc/5  | Top/name_test2/etc|
||      ---------------------------------------------------------------------------
|||-<--|    4          | tesla        |  Top/name_test2/tesla | Top/name_test2    |
|||    ----------------------------------------------------------------------------
|||
|||
|||    **tabla_exemple2 before update**
|||    =====================================================================================================================================================================
|||    |    id         |    topic              |    topicShort         |    parentTopic        |    displayName    |    description    |    lastUpdate        | sitecount  |
|||    =====================================================================================================================================================================
|||    |    1          | Top/name_test/helloo  | helloo                | Top/name_test752      |     Nuul          |     hello         | 2010-06-19 04:10:14  |  324       |
|||    ---------------------------------------------------------------------------------------------------------------------------------------------------------------------
|||    |    2          | Top/name_test2/nest   | nest                  | Top/name_test2/       |     Nuul          |      nest         | 2010-06-19 04:11:23  |  545435    |
|||    ---------------------------------------------------------------------------------------------------------------------------------------------------------------------
|||    |    3          | Top/name_test2/etc/57 | 5                     | Top/name_test2/etc/   |     Nuul          |      5            |  2010-06-19 04:15:13 |  54354343  |
|||    ---------------------------------------------------------------------------------------------------------------------------------------------------------------------
|||    |    4          | Top/name_test2/tesla1 | tesla                 |  Top/name_test2/      |     Nuul          |      tesla        |  2010-06-19 04:10:14 |  676756    |
|||    ---------------------------------------------------------------------------------------------------------------------------------------------------------------------
|||  
|||
|||  **table_exemple2** after update
|||
|||
|||   =====================================================================================================================================================================
|||    |    id         |    topic              |    topicShort         |    parentTopic        |    displayName    |    description    |    lastUpdate        | sitecount  |
|||    =====================================================================================================================================================================
|||    |    1          | Top/name_test/helloo  | helloo                | Top/name_test752      |     Nuul          |     hello         | 2010-06-19 04:10:14  |  324       |
|||    ---------------------------------------------------------------------------------------------------------------------------------------------------------------------
|||    |    2          | Top/name_test2/nest   | nest                  | Top/name_test2/       |     Nuul          |      nest         | 2010-06-19 04:11:23  |  545435    |
|||    ---------------------------------------------------------------------------------------------------------------------------------------------------------------------
|||    |    3          | Top/name_test2/etc/57 | 5                     | Top/name_test2/etc/   |     Nuul          |      5            |  2010-06-19 04:15:13 |  54354343  |
|||    ---------------------------------------------------------------------------------------------------------------------------------------------------------------------
|||    |    4          | Top/name_test2/tesla1 | tesla                 |  Top/name_test2/      |     Nuul          |      tesla        |  2010-06-19 04:10:14 |  676756    |
|||    ---------------------------------------------------------------------------------------------------------------------------------------------------------------------
|||--->|    6          | Top/name_test2        | name_test2            | Top                   |     Nuul          |      name_test2   |  insert data         |  0         |
|      ---------------------------------------------------------------------------------------------------------------------------------------------------------------------
|----->|    7          | Top/name_test2/etc/5  | 5                     | Top/name_test2/etc    |     Nuul          |      5            |  insert data         |  0         |
|      ---------------------------------------------------------------------------------------------------------------------------------------------------------------------
|----->|    8          | Top/name_test2/tesla  | tesla                 | Top/name_test2        |     Nuul          |      tesla        |  insert data         |  0         |
       ---------------------------------------------------------------------------------------------------------------------------------------------------------------------

       Data from "targetCategory" wil goo to "topic"
       data from "title" goo to "topicShort"
       Data from "parentTopic" goo to "parentTopic"
       I ned insert new data to column "displayName" well be "Nuul"
       I ned insert new data to column "description" well be idem "topicShort"
       I ned insert new data to column "displayName" well be "Nuul"
       I ned insert new data to column "lastUpdate" well be "data time inserition"
       I ned insert new data to column "displayName" well be "0"

       condition its column targetCategory data like Top/name_test2 and like Top/name_test2/%
4

1 回答 1

2

尚不完全清楚您想要什么，但您可以INSERT ... SELECT与适当的字符串函数一起使用。例如，简单地从column2第一个冒号之前的所有内容中删除：

INSERT INTO table_exemple3 (column4, column5, column6)
SELECT column1, SUBSTRING(column2, LOCATE(':', column2) + 1), column3
FROM   table_exemple2

在sqlfiddle上查看。

于 2012-10-21T09:46:04.587 回答