Many of our non-Looker tools have the ability to mark incompatible dimensions and measures, which will disallow the user from using them in combination. For example, in DFP, "Creative Size" is incompatible with requests-related metrics, because requests are for one of a range of acceptable creatives rather than for a specific creative. On DFP specifically, the UI "grays out" the incompatible dimensions/metrics and disallows selecting them. A screenshot:
We're trying to pull similar ad metrics into looker, and are wanting to reimplement some version of this graying out. Does LookML has a way of tagging a group of dimensions/measures as incompatible? Is there a way to fake it?