How to get a dynamic attribute name in cfloop over query in ColdFusion

Question

I\'m inside a cfloop over a query. I want to get an attribute, but I won\'t know what that attribute will be until runtime. Using #qryResult[MyAttr]#

Answer 1

<cfloop query="qryResult">
  <cfset MyAttr="autoid" />
  <cfoutput>
   Test 1: #qryResult.autoid# <br/>  <!--- succeeds --->
   Test 2: #qryResult[MyAttr][qryResult.CurrentRow]# <br/> <!--- succeeds --->
  </cfoutput>
</cfloop>

CurrentRow is implicit in the literal syntax (query.col). It is tied to the index of <cfloop query="...">/<cfoutput query="..."> (or 1 when used outside a loop).

Mentioning it explicitly is necessary in the "array index" syntax (query[col][row]), because query[col] alone returns the column object (which is the "complex type" the error refers to).

Side effect: You can use this for random access to a query result outside of a loop (i.e. as a multi-dimensional array). Once you know the numbers of the rows that interest you, you can access the rows directly.