| `expr` | string | **Yes** | | The actual expression/query that will be evaluated by Prometheus |
| `refId` | string | **Yes** | | A unique identifier for the query within the list of targets.<br/>In server side expressions, the refId is used as a variable name to identify results.<br/>By default, the UI will assign A->Z; however setting meaningful names may be useful. |
| `datasource` | | No | | For mixed data sources the selected datasource is on the query level.<br/>For non mixed scenarios this is undefined.<br/>TODO find a better way to do this ^ that's friendly to schema<br/>TODO this shouldn't be unknown but DataSourceRef | null |
| `editorMode` | string | No | | Possible values are: `code`, `builder`. |
| `exemplar` | boolean | No | | Execute an additional query to identify interesting raw samples relevant for the given expr |
| `format` | string | No | | Possible values are: `time_series`, `table`, `heatmap`. |
| `hide` | boolean | No | | true if query is disabled (ie should not be returned to the dashboard)<br/>Note this does not always imply that the query should not be executed since<br/>the results from a hidden query may be used as the input to other queries (SSE etc) |
| `instant` | boolean | No | | Returns only the latest value that Prometheus has scraped for the requested time series |
| `intervalFactor` | number | No | | @deprecated Used to specify how many times to divide max data points by. We use max data points under query options<br/>See https://github.com/grafana/grafana/issues/48081 |
| `legendFormat` | string | No | | Series name override or template. Ex. {{hostname}} will be replaced with label value for hostname |
| `queryType` | string | No | | Specify the query flavor<br/>TODO make this required and give it a default |
| `range` | boolean | No | | Returns a Range vector, comprised of a set of time series containing a range of data points over time for each time series |
