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Subquery in coldfusion

Posted on 2014-03-24
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Last Modified: 2014-03-25
Hi,

can I do a sub query in ColdFusion?

How can I accomplish a sub query result.

<cfquery name = "QSearchResultRecord"  datasource='#strDSN#' username='#strUID#' password='#strPWD#' result="r">
  SELECT case when L.ParentIssueID is null then L.IssueId
         else L.ParentIssueID
		 end  as TopIssueID
		 , L.IssueID
		 , L.ParentIssueID
		 , T.TicketNumber
		 , L.TitleOfIssue
		 , I.Status
		 , L.DateCreated
         , C.Category
   FROM LogEntry L
     LEFT JOIN IssueStatus I on I.StatusID = L.StatusID
     LEFT JOIN CategoryType C on C.CategoryTypeID = L.CategoryTypeID
     LEFT JOIN TicketNumber T on T.TicketNumberID = L.TicketNumberID
  <cfif len(FoundIssueIDs) eq 0 >
   where 1 = 2 
  <cfelse>
   where L.IssueID in  (#FoundIssueIDs#)
  </cfif>
  order by 1 desc, case when L.parentIssueID is null then 1 else 2 end 
</cfquery>

 <cfquery name = "QSearchResult"  datasource='#strDSN#' username='#strUID#' password='#strPWD#' result="rcr">

select * from QSearchResultRecord

</cfquery>

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Question by:lulu50
  • 2
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4 Comments
 
LVL 39

Expert Comment

by:gdemaria
ID: 39950945
What is it you want to do?  

You can have a subquery in your select or your join or in your where clause..

(see bold text as examples)

SELECT case when L.ParentIssueID is null then L.IssueId
         else L.ParentIssueID
             end  as TopIssueID
             , L.IssueID
             , L.ParentIssueID
             , T.TicketNumber
             , L.TitleOfIssue
             , I.Status
             , L.DateCreated
         , C.Category
       , (select count(*) from xxxx where issueId = xxx) as CountRelated
  FROM LogEntry L
     LEFT JOIN IssueStatus I on I.StatusID = L.StatusID
     LEFT JOIN CategoryType C on C.CategoryTypeID = L.CategoryTypeID
     LEFT JOIN TicketNumber T on T.TicketNumberID = L.TicketNumberID
    LEFT JOIN (select ONe,  Two, Three
             from aTable) sub on sub.issueId = l.issueID
0
 

Author Comment

by:lulu50
ID: 39950965
Hi gdemaria,

Question:

It has been a long time since I have worked with coldfusion. but I know that I did it before
where I have a query and I can create a subquery to select from the first query.

Something like this:


<cfquery name = "QSearchResultRecord"  datasource='#strDSN#' username='#strUID#' password='#strPWD#' result="r">
  SELECT case when L.ParentIssueID is null then L.IssueId
         else L.ParentIssueID
		 end  as TopIssueID
		 , L.IssueID
		 , L.ParentIssueID
		 , T.TicketNumber
		 , L.TitleOfIssue
		 , I.Status
		 , L.DateCreated
         , C.Category
   FROM LogEntry L
     LEFT JOIN IssueStatus I on I.StatusID = L.StatusID
     LEFT JOIN CategoryType C on C.CategoryTypeID = L.CategoryTypeID
     LEFT JOIN TicketNumber T on T.TicketNumberID = L.TicketNumberID
  <cfif len(FoundIssueIDs) eq 0 >
   where 1 = 2 
  <cfelse>
   where L.IssueID in  (#FoundIssueIDs#)
  </cfif>
  order by 1 desc, case when L.parentIssueID is null then 1 else 2 end 
</cfquery>

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 <cfquery name = "QSearchResult"  datasource='#strDSN#' username='#strUID#' password='#strPWD#' result="rcr">

select * from QSearchResultRecord

</cfquery>

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LVL 39

Accepted Solution

by:
gdemaria earned 500 total points
ID: 39951282
Perhaps you are looking for a "query of query"

This allows you to use the first query as the "table" in the another query.



<cfquery name="getSubSet" dbtype="query">
   select * from QSearchResultRecord   <!=== =the table here is the query name
   where IssueID between 1 and 100
</cfquery>
0
 

Author Closing Comment

by:lulu50
ID: 39953092
Thank you
0

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