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Converting a single comma separated field into multiple rows

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gazza110

Technical User
Apr 14, 2004
42
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Hi,

I have a table that holds different rating categories in a single field - comma separated (table name: scale). Each rating has a value relative to where it is in the list (first_item = 1, second_item = 2, third_item = 3 etc).

I want to be able to run an SQL query in MySQL to split the field into multiple rows and determine the rating number (VALUE).

Table: scale
SQL:
+-------------------------------------------------------------------------------------------------------------------------------+
| id    | name         | scale    
|-------|--------------|---------------------------------------------------------------------------------------------------------
| 1     | knowing      | Mostly separate knowing,Separate and connected,Mostly connected knowing
| 2     | competence   | Not yet competent,Competent
| 3     | skill        | Artistic, Communication, Leadership, Community engagement, Sport/outdoors, Cultural enrichment, Other
+-------------------------------------------------------------------------------------------------------------------------------+

I want to be able to split this so that each scale is split into a separate row and numbered (VALUE):

SQL:
+-------------------------------------------------------------------------------------------------------------------------------+
| id    | name         | [b]VALUE[/b]          |  scale    
|-------|--------------|---------------------------------------------------------------------------------------------------------
| 1     | knowing      | 1              |  Mostly separate knowing
| 1     | knowing      | 2              |  Separate and connected
| 1     | knowing      | 3              |  Mostly connected knowing
| 2     | competence   | 1              |  Not yet competent
| 2     | competence   | 2              |  Competent
| 3     | skill        | 1              |  Artistic
| 3     | skill        | 2              |  Communication
| 3     | skill        | 3              |  Leadership
| 3     | skill        | 4              |  Community engagement
| 3     | skill        | 5              |  Sport/outdoors
| 3     | skill        | 6              |  Cultural enrichment
| 3     | skill        | 7              |  Other
+-------------------------------------------------------------------------------------------------------------------------------+

I have tried and failed to find a solution ... any help greatly appreciated!

Many thanks,
Gary
 
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