I couldn't figure out why I got this error. I have set default var query. Please help. If qLocal has records then return fine, but when qLocal records is empty will throw errors. I've set a default.
<cffunction name="getName" access="public" returnType="query" output="false"
hint="This method returns a query.">
<cfargument name="id_fk" required="no" default="0">
<cfargument name="id2_fk" required="no" default="0">
<cfset var qQuery = "">
<cfquery name="qLocal" datasource="#db#">
WHERE id = <cfqueryPARAM value ="#id_fk#" CFSQLType ="CF_SQL_INTEGER"> AND id2 = <cfqueryPARAM value ="#id_fk2#" CFSQLType ="CF_SQL_INTEGER">
<cfquery name="qQuery" datasource="db">
WHERE tbl2id = <cfqueryPARAM value ="#qLocal.id#" CFSQLType ="CF_SQL_INTEGER">
qQuery vs. qLocal.
I think I understand but can you clarify? Or maybe I have to create 2 functions for this?
The query named qQuery only executes if the qLocal query returned records. You initialized qQuery as a variable, which is not a query object. If you initialize qQuery as a query object using QueryNew(columnlist) that should work.
I didn't notice the conditional query and what mkanel states is correct - qQuery will be defined if results are returned in your qLocal query but will be undefined (really an integer with a value of 0) if no results are found. There is a possible second problem here in that you never declare qLocal. If it really is a "local" it needs to be declared like qQuery, otherwise it will default to the variables scope -- which is not local. For your simple test, it'll probably work fine but on a busy site you'll run into cross-threading issues that'll probably return some strange results that'll be hard to debug. I tend to not use the var declaration and instead scope all my variables using local for local: local.qQuery and local.qLocal. This way I can look at the code and visually see the scope as opposed to assuming it is declared correctly.
Thanks for the explanations. It helps me a lot of these scope.