---
aliases:
  - ../../data-sources/prometheus/query-editor/
description: Guide for using the Prometheus data source's query editor
keywords:
  - grafana
  - prometheus
  - logs
  - queries
menuTitle: Query editor
title: Prometheus query editor
weight: 300
---

# Prometheus query editor

Grafana provides a query editor for the Prometheus data source to create queries in PromQL. For more information about PromQL, see [Querying Prometheus](http://prometheus.io/docs/querying/basics/).

For general documentation on querying data sources in Grafana, see [Query and transform data]({{< relref "../../../panels-visualizations/query-transform-data" >}}).

For options and functions common to all query editors, see [Query editors]({{< relref "../../../panels-visualizations/query-transform-data" >}}).

## Choose a query editing mode

The Prometheus query editor has two modes:

- [Builder mode](#builder-mode)
- [Code mode](#code-mode)

Each mode is explained in greater detail below.

{{< figure src="/static/img/docs/prometheus/editing-mode.png" max-width="500px" class="docs-image--no-shadow" caption="Query editor mode" >}}

Both modes are synchronized, so you can switch between them. However, if there is an issue with the query while switching modes, a warning message will appear.

## Toolbar elements

The query editor toolbar contains the following elements:

- **Kick start your query** - Click to see a list of operation patterns that help you quickly get started adding multiple operations to your query. These include:

  - Rate query starters
  - Histogram query starters
  - Binary query starters

Click the arrow next to each to see available options to add to your query.

- **Explain** - Toggle to display a step-by-step explanation of all query components and operations.

{{< figure src="/static/img/docs/prometheus/explain-results.png" max-width="500px" class="docs-image--no-shadow" caption="Explain results" >}}

- **Builder/Code** - Click the corresponding **Builder** or **Code** tab on the toolbar to select a editor mode.

## Configure common options

You can configure Prometheus-specific options in the query editor by setting several options regardless of mode.

{{< figure src="/static/img/docs/prometheus/options.png" max-width="500px" class="docs-image--no-shadow" caption="Options" >}}

### Legend

The **Legend** setting defines the time series's name. You can use a predefined or custom format.

- **Auto** - Displays unique labels. Also displays all overlapping labels if a series has multiple labels.
- **Verbose** - Displays all label names.
- **Custom** - Uses templating to select which labels will be included. For example, `{{hostname}}` is replaced by the label value for the label `hostname`. Clear the input and click outside of it to select another mode.

### Min step

The **Min step** setting defines the lower bounds on the interval between data points.
For example, set this to `1h` to hint that measurements are taken hourly.
This setting supports the `$__interval` and `$__rate_interval` macros.

### Format

Switch between the following format options:

- **Time series** - The default time series format. See [Time series kind formats](https://grafana.github.io/dataplane/timeseries/) for information on time series data frames and how time and value fields are structured.
- **Table** - This works only in a [Table panel]({{< relref "../../../panels-visualizations/visualizations/table" >}}).
- **Heatmap** - Displays metrics of the Histogram type on a [Heatmap panel]({{< relref "../../../panels-visualizations/visualizations/heatmap" >}}) by converting cumulative histograms to regular ones and sorting the series by the bucket bound.

### Type

The **Type** setting sets the query type. These include:

- **Both** - The default option. Returns results for both a **Range** query and an **Instant** query.
- **Range** - Returns a range vector consisting of a set of time series data containing a range of data points over time for each time series. You can choose lines, bars, points, stacked lines or stacked bars
- **Instant** - Returns one data point per query and only the most recent point in the time range provided. The results can be shown in table format or as raw data. To depict instant query results in the time series panel, first add a field override, next add a property to the override named `Transform`, and finally select `Constant` from the **Transform** dropdown.

For more information, refer to the [Time Series Transform option documentation]({{< relref "../../../panels-visualizations/visualizations/time-series#transform" >}}).

{{% admonition type="note" %}}
Grafana modifies the request dates for queries to align them with the dynamically calculated step.
This ensures a consistent display of metrics data, but it can result in a small gap of data at the right edge of a graph.
{{% /admonition %}}

### Exemplars

Toggle **Exemplars** to run a query that includes exemplars in the graph. Exemplars are unique to Prometheus. For more information see [Introduction to exemplars](https://grafana.com/docs/grafana/latest/fundamentals/exemplars/).

{{% admonition type="note" %}}
There is no option to add exemplars with an **Instant** query type.
{{% /admonition %}}

### Inspector

Click **Inspector** to get detailed statistics regarding your query. Inspector functions as a kind of debugging tool that "inspects" your query. It provides query statistics under **Stats**, request response time under **Query**, data frame details under **{} JSON**, and the shape of your data under **Data**.

{{< figure src="/static/img/docs/prometheus/insepctor-9-5.png" max-width="500px" class="docs-image--no-shadow" caption="Inspector" >}}

## Builder mode

**Builder mode** helps you build queries using a visual interface. This option is best for users who have limited or no previous experience working with Prometheus and PromQL.

This video demonstrates how to use the visual Prometheus query builder available in Grafana v9.0:

{{< vimeo 720004179 >}}

</br>

### Metrics

{{< figure src="/static/img/docs/prometheus/metrics-and-labels.png" max-width="500px" class="docs-image--no-shadow" caption="Metric and label filters" >}}

When you are ready to create a query, you can choose the specific metric name from the dropdown list under **Metric**.
The data source requests the list of available metrics from the Prometheus server based on the selected time rage.
You can also enter text into the selector when the dropdown is open to search and filter the list.

### Label filters

Select desired labels and their values from the dropdown list.
When a metric is selected, the data source requests available labels and their values from the server.
Use the `+` button to add a label, and the `x` button to remove a label.

### Operations

{{< figure src="/static/img/docs/prometheus/operations.png" max-width="500px" class="docs-image--no-shadow" caption="Operations" >}}

Select the **+ Operations** button to add operations to your query.

The query editor groups operations into the following sections:

- Aggregations - for additional information see [Aggregation operators](https://prometheus.io/docs/prometheus/latest/querying/operators/#aggregation-operators).
- Range functions - for additional information see [Functions](https://prometheus.io/docs/prometheus/latest/querying/functions/#functions).
- Functions - for additional information see [Functions](https://prometheus.io/docs/prometheus/latest/querying/functions/#functions).
- Binary operations - for additional information see [Binary operators](https://prometheus.io/docs/prometheus/latest/querying/operators/#binary-operators).
- Trigonometric - for additional information see [Trigonometric functions](https://prometheus.io/docs/prometheus/latest/querying/functions/#trigonometric-functions).
- Time functions - for additional information see [Functions](https://prometheus.io/docs/prometheus/latest/querying/functions/#functions).

All operations have function parameters under the operation header. Click the `operator` to see a full list of supported functions. Some operations allow you to apply specific labels to functions.

{{< figure src="/static/img/docs/prometheus/use-function-by-label-9-5.png" max-width="500px" class="docs-image--no-shadow" caption="Functions and labels" >}}

Some operations make sense only when used in a specific order.
If adding an operation would result in nonsensical query, the query editor adds the operation to the correct place.

#### Hints

{{< figure src="/static/img/docs/prometheus/hint-example.png" max-width="500px" class="docs-image--no-shadow" caption="Hint" >}}

The query editor can detect which operations are most appropriate for some selected metrics.
If it does, it displays a hint next to the **+ Operations** button.

To add the operation to your query, click the **Hint**.

Once you are satisfied with your query, click **Run query**.

## Code mode

**Code mode** is for the experienced Prometheus user with prior expertise in PromQL, Prometheus' query language. The Code mode editor allows you to create queries just as you would in Prometheus. For more information about PromQL see [Querying Prometheus](http://prometheus.io/docs/querying/basics/).

{{< figure src="/static/img/docs/prometheus/code-mode.png" max-width="500px" class="docs-image--no-shadow" caption="Code mode" >}}

The user interface (UI) also lets you select metrics, labels, filters and operations.

You can write complex queries using the text editor with autocompletion features and syntax highlighting.
It also contains a [Metrics browser]({{< relref "#metrics-browser" >}}) to further help you write queries.

### Use autocomplete

Code mode's autocomplete feature works automatically while typing. The query editor can autocomplete static functions, aggregations, keywords, and also dynamic items like metrics and labels.
The autocompletion dropdown includes documentation for the suggested items where available.

### Metrics browser

The metrics browser locates metrics and selects relevant labels to help you build basic queries.
When you click **Metrics browser**, it displays all available metrics and labels.
If supported by your Prometheus instance, each metric also displays its `HELP` and `TYPE` as a tooltip.

{{< figure src="/static/img/docs/prometheus/metric-browser.png" max-width="500px" class="docs-image--no-shadow" caption="Metrics browser" >}}

When you select a metric under Step 1, the browser narrows down the available labels to show only the ones applicable to the metric.
You can then select one or more labels shown in Step 2.
Select one or more values in Step 3 for each label to tighten your query scope.
In Step 4, you can select **Use query** to run the query, **Use as rate query** to add the rate operation to your query (`$__rate_interval`), **Validate selector** to verify the selector is valid and show the number of series found, or **Clear** to clear your selections and start over.

{{% admonition type="note" %}}
If you do not remember a metric name, you can also select a few labels to narrow down the list, then find relevant label values.
{{% /admonition %}}

All lists in the metrics browser have a search field above them to quickly filter for metrics or labels that match a certain string.
The values section has only one search field, and its filtering applies to all labels to help you find values across labels once selected.

For example, among your labels `app`, `job`, `job_name` only one might have the value you are looking for.

Once you are satisfied with your query, click **Run query**.
