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Referencing a dynamic referenced query in coldfusion

Posted on 2012-04-13
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Last Modified: 2012-04-16
I used the output of a primary query as the catalyst for a query of query.

I get query sets back in memory and now I want to reference them in a cloop to load a chart.

I am stuck.

I am attaching code, and some output from the run.

I place this tag where my sytnax is wrong:

<!--- Here is the problem --->
cfloop-From.docx
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Question by:mahpog
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6 Comments
 
LVL 52

Expert Comment

by:_agx_
ID: 37844582
If this is the name of your query:

          <cfquery name="qry#ListGetAt(session.qpgm,counter)#" ...>

You must use the same name in the cfloop. ie This

      <cfloop query="qry#ListGetAt(session.qpgm,counter)#" ...>

.. instead of:

       <cfloop query="#qry#session.qpgm##counter##">
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Author Comment

by:mahpog
ID: 37844988
Thanks for the response.

I did have that originally, but I get the following error:

Invalid list index 12.  
In function ListGetAt(list, index [, delimiters]), the value of index, 12, is not a valid as the first argument (this list has 11 elements). Valid indexes are in the range 1 through the number of elements in the list.  

(my session.qpgm has 11 pgms numbers. I used valuelist to seperate them with ","s.)
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LVL 52

Expert Comment

by:_agx_
ID: 37845135
Invalid list index 12.  

Edit: Ohh... I see the problem. That code is outside the earlier loop:

        ie  <cfloop From = "1" TO = "#ListLen(session.qpgm)#" INDEX = "Counter">

.. so when the code gets to the query loop, the value of #counter# is 12 causing an error:

       <cfloop query="qry#ListGetAt(session.qpgm,counter)#" ...>

If you want to access the query objects created in the 1st step you need another loop

    <cfloop From = "1" TO = "#ListLen(session.qpgm)#" INDEX = "Counter">
             <cfloop query="qry#ListGetAt(session.qpgm,counter)#" ...>
                  ... some code
             </cfloop>
            ...
     </cfloop>
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LVL 52

Accepted Solution

by:
_agx_ earned 500 total points
ID: 37849266
Why delete the question? Seems like the missing loop was the reason for the original error and answers the question asked. ie "Referencing a dynamic referenced query in coldfusion"
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Author Closing Comment

by:mahpog
ID: 37849415
Giving points for original question.
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LVL 52

Expert Comment

by:_agx_
ID: 37852042
Thanks but it wasn't a request for points - or I would've posted an "objection" not a comment.  Questions with valid answers aren't normally just deleted. Neither should they given be "B" grades, just to close out the thread .. As you ultimately did use the suggested code, it naturally raises the question - what else is still wrong or not working?

Next time, if you're still having problems in other areas of the code,  better to elaborate on them instead of just deleting or closing the question without explanation.  We can't help if don't know something else is wrong.
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