query collection based on file existing on machine

At my company we wanted to create a system where developers could opt in to receive a copy of the nightly build of the software they were working on. In the first part of this project we create a collection based on the software inventory of a particular file. By default SCCM looks for any *.exe's on client systems. Rather than add another file type, we created a dummy exe as the criteria for our collection:

Criterion Type: Simple Value

Where: Software Files – File Name

Operator: is equal to

Value: Filename.exe

Equilivent in wql:

select SMS_R_SYSTEM.ResourceID,SMS_R_SYSTEM.ResourceType,SMS_R_SYSTEM.Name,SMS_R_SYSTEM.SMSUniqueIdentifier,SMS_R_SYSTEM.ResourceDomainORWorkgroup,SMS_R_SYSTEM.Client from SMS_R_System inner join SMS_G_System_SoftwareFile on SMS_G_System_SoftwareFile.ResourceID = SMS_R_System.ResourceId where SMS_G_System_SoftwareFile.FileName = "Filename.exe"