Dynatrace supports complex query functionality for metrics data through its metric selector language.
Once you learn the ropes, you can apply that to multiple areas of the product, such as:
- Metric REST API,
- Data Explorer,
- Custom Events for Alerting,
- SLOs.
If you are just getting started with metric selectors and you learn best by example, then Query by Example is a good place for you to start. If you already feel comfortable with simple metric selectors and are looking for examples of more advanced features of metric selectors, then you may want to check out Metric Expressions by Example as well.
Even example-oriented people need to look up something in the reference once in a while.
For that, please refer to the metric selector documentation on dynatrace.com.