Sure: some PromQL functions return no metric name and/or no labels. That's how those functions operate.
For example, sum(metric) doesn't return any labels, because it's summing together all the timeseries with that particular metric. Each individual metric, by definition, has a different set of labels. The sum of those metrics has no identifying labels, since it combines all those metrics. -- You received this message because you are subscribed to the Google Groups "Prometheus Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/prometheus-users/e78b2027-d41a-4fb0-b183-e0aa4e583c6c%40googlegroups.com.
