want to use as the current time range and then choose Apply Note that it could take up to 1 minute to see the plugin show up in your Grafana. Lets say you have an important business process metric you want to track every day for the current day so far, but the data starts coming in during normal business hours starting at 8am. Note: By signing up, you agree to be emailed related product-level information. The difference between two non-null values is their algebraic difference; or null, if the result is negative and nonNegative: true; Some value v minus null is v minus the last non-null value seen before v; or null if v is the first non-null value seen. On the dashboard, click All types > Aggregation based, select Vertical bar, then select Kibana Sample Data Logs . To achieve this easily, use I would query for the two tables in separate variables with different time ranges: period of the unit (such as day, week, or month), append /