While Metaplane supports a number of monitors out of the box, you can use custom SQL monitors to monitor anything that isn't natively supported.

• If your query returns a scalar numeric value, Metaplane tracks that value over time and alerts you on an outlier.
• If your query returns a result set, Metaplane tracks the number of rows returned over time and alerts you on an outlier.

Adding a custom monitor

To add a custom monitor, you can navigate to the Data page, enter Edit mode, and click the Create Custom SQL Monitor button.

In the custom monitor modal, you can enter a monitor name, description, and run any SQL. Metaplane will return the result set that will be tracked over time.