Get metrics by label where the label is not in another metric

[Brandon Dennis]

So I'm trying to setup a query for alertmanager that will trigger if a container is running without any limits (for example cpu limits). My thinking was I could take all the entries in kube_pod_container_info metric and do a count on that where there is no matching "pod" label in kube_pod_container_limits_cpu_cores. I'm not sure if this is possible or if there is a better way of doing this. I'd appreciate any help.