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Coldfusion - query to list question

Posted on 2016-10-19
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Last Modified: 2016-10-19
Hello experts .
I need help to output two columns in a list.
I have a code that is working and i'm getting the output i need but i was thinking if i can use another function to 'build' the output (f.e. array).
My code  :

<cfoutput query="data" group="#arguments.sorting#">
     <cfset ruleslist = ''/>
      <cfoutput>
       <cfset listitem = 'testname_' & testname_id &  '=' &  testname_value/>
       <cfset ruleslist = listappend(ruleslist,listitem,'&')/>
      </cfoutput>
        #ruleslist#</br>
</cfoutput

Any help?
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Question by:Panos
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3 Comments
 
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Accepted Solution

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_agx_ earned 2000 total points
ID: 41850278
AFAIK, there isn't a cleaner method when dealing with grouped query output.  Personally I don't see anything wrong with your current method.  Some db's like MySQL support functions like GROUP_CONCAT which allow you to build the "list" of values within your SQL, ie

          SELECT  ColumnToGroupBy
                         , GROUP_CONCAT(ColumnToBuildIntoList) AS YourList
          FROM    TableName
          GROUP BY ColumnToGroupBy

However, with all the concatenation required that might end up being less readable IMO.
0
 
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Author Comment

by:Panos
ID: 41850316
Thank you very much for your help agx.
I'm sometimes wondering if there would be a better way of doing something.
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LVL 52

Expert Comment

by:_agx_
ID: 41850358
Yes, it's good to check the options when working on a section of code.  In this case, that code is probably as good as it gets. As using db functions, does not really buy anything.

Glad I could help.
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