Query returns zero records in coldfusion context, but works fine in Navicat

Question

I've got a query that's returning zero records when I load a page.  If I copy and paste that same query (from the debug output) into navicat, I get rows returned (as I expect).  Has anyone seen this?  It happens locally (CF9) AND remotely on our staging server (CF10).  Even weirder, it's a query that was previously working fine - I simply added an if statement to the where clause, and all of a sudden... 
Here's the query:
        <CFQUERY name="LOCAL.getEncounterServices" datasource="#REQUEST.dsn#"> 
        SELECT
            a.EncounterProductID,
            a.DateTime AS ServiceDate,
            aa.CartItemID,
            aaa.CartID,
            aaaaa.CartStatus,
            b.ProductID,
            b.ProductName,
            b.CPTCode,
            b.Price,
            c.EncounterID,
            c.DateTimeClosed AS EncounterClosedDate,
            d.FirstName,
            d.LastName
        FROM
            EncounterProducts a
                LEFT JOIN CartItemProduct aa ON (a.EncounterProductID = aa.EncounterProductID AND aa.Active = 1)
                LEFT JOIN CartItem aaa ON (aa.CartItemID = aaa.CartItemID)
                LEFT JOIN Cart aaaa ON (aaa.CartID = aaaa.CartID)
                LEFT JOIN CartStatus aaaaa ON (aaaa.CartStatusID = aaaaa.CartStatusID),
            Product b,
            Encounters c,
            Contacts d,
            EncounterStatuses e
        WHERE
            1 = 1
            AND (aa.CartItemID IS NULL OR aaaaa.CartStatus = 'Deleted')
            AND a.Active = 1
            AND a.ProductID = b.ProductID
            AND a.EncounterID = c.EncounterID
            AND c.PatientID = d.ContactID
            AND c.EncounterStatusID = e.EncounterStatusID
            AND e.EncounterStatus = 'Closed'
          <CFIF IsDefined("ARGUMENTS.encounter") AND IsObject(ARGUMENTS.encounter)>
                 AND c.EncounterID = <CFQUERYPARAM cfsqltype="cf_sql_integer" value="#ARGUMENTS.encounter.getID()#">
         <CFELSE>
                AND c.DateTimeClosed >= <CFQUERYPARAM cfsqltype="cf_sql_date" value="#ARGUMENTS.startDate#">
                AND c.DateTimeClosed < <CFQUERYPARAM cfsqltype="cf_sql_date" value="#DateFormat(DateAdd('d', 1, ARGUMENTS.endDate), 'yyyy-mm-dd')# 00:00:00">
           </CFIF>
            AND c.LocationID = <CFQUERYPARAM cfsqltype="cf_sql_integer" value="#ARGUMENTS.locationID#">
            AND c.CustomerID = <CFQUERYPARAM cfsqltype="cf_sql_integer" value="#ARGUMENTS.customerID#">
        </CFQUERY>
All of this worked just fine before I added the lines:
         <CFIF IsDefined("ARGUMENTS.encounter") AND IsObject(ARGUMENTS.encounter)>
                 AND c.EncounterID = <CFQUERYPARAM cfsqltype="cf_sql_integer" value="#ARGUMENTS.encounter.getID()#">
         <CFELSE>
                AND c.DateTimeClosed >= <CFQUERYPARAM cfsqltype="cf_sql_date" value="#ARGUMENTS.startDate#">
                AND c.DateTimeClosed < <CFQUERYPARAM cfsqltype="cf_sql_date" value="#DateFormat(DateAdd('d', 1, ARGUMENTS.endDate), 'yyyy-mm-dd')# 00:00:00">
          </CFIF>
Previously, it had just been:
                AND c.DateTimeClosed >= <CFQUERYPARAM cfsqltype="cf_sql_date" value="#ARGUMENTS.startDate#">
                AND c.DateTimeClosed < <CFQUERYPARAM cfsqltype="cf_sql_date" value="#DateFormat(DateAdd('d', 1, ARGUMENTS.endDate), 'yyyy-mm-dd')# 00:00:00">
With no IF/ELSE statement.
Anyone seen anything like this before?  Any ideas? 
Thanks.

Answer 1

Right, I'll start disabusing myself of the DateFormat!
I'm sorry, I should've posted the actual query too.  It's inserting the first part - "AND c.EncounterID = ....."
Here's the full query:
LOCAL.getEncounterServices (Datasource=xmddevdb, Time=9ms, Records=0) in /Applications/ColdFusion9/wwwroot/XMD_NEW/xmd_dev/cfc/ShoppingGateway.cfc @ 16:56:28.028
SELECT
            a.EncounterProductID,
            a.DateTime AS ServiceDate,
            aa.CartItemID,
            aaa.CartID,
            aaaaa.CartStatus,
            b.ProductID,
            b.ProductName,
            b.CPTCode,
            b.Price,
            c.EncounterID,
            c.DateTimeClosed AS EncounterClosedDate,
            d.FirstName,
            d.LastName
        FROM
            EncounterProducts a
                LEFT JOIN CartItemProduct aa ON (a.EncounterProductID = aa.EncounterProductID AND aa.Active = 1)
                LEFT JOIN CartItem aaa ON (aa.CartItemID = aaa.CartItemID)
                LEFT JOIN Cart aaaa ON (aaa.CartID = aaaa.CartID)
                LEFT JOIN CartStatus aaaaa ON (aaaa.CartStatusID = aaaaa.CartStatusID),
            Product b,
            Encounters c,
            Contacts d,
            EncounterStatuses e
        WHERE
            1 = 1
            AND (aa.CartItemID IS NULL OR aaaaa.CartStatus = 'Deleted')
            AND a.Active = 1
            AND a.ProductID = b.ProductID
            AND a.EncounterID = c.EncounterID
            AND c.PatientID = d.ContactID
            AND c.EncounterStatusID = e.EncounterStatusID
            AND e.EncounterStatus = 'Closed'
                 AND c.EncounterID = ?
            AND c.LocationID = ?
            AND c.CustomerID = ?
Query Parameter Value(s) -
Parameter #1(cf_sql_integer) = 28
Parameter #2(cf_sql_integer) = 16
Parameter #3(cf_sql_integer) = 6
Thansk again for the help!