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added RefID definition

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Larissa Wandzura
2025-09-04 08:58:35 -05:00
parent 0a73fdff41
commit e021950a68
1 changed files with 5 additions and 1 deletions
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docs/sources/panels-visualizations/query-transform-data/sql-expressions/index.md
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@@ -103,6 +103,10 @@ To create a SQL expression, complete the following steps:
After you have added a SQL expression, you can select from other data source queries by referencing the RefIDs of the queries in your SQL expression as if they were tables in a SQL database.
{{< admonition type="note" >}}
The **RefID** is a unique identifier assigned to each query within a Grafana panel that serves as a reference name for that query's data.
{{< /admonition >}}
![Using the RefID](/media/docs/sql-expressions/using-the-RefID.png)
## Workflow to build SQL expressions
@@ -163,7 +167,7 @@ For SQL Expressions to work properly with alerting and recording rules, your que
- One numeric column - **_required_**. This contains the value that triggers alerts or gets recorded.
- Unique string column combinations - **_required_**. Each row must have a unique combination of string column values.
- One or more string columns - _optional_. These become **labels** for the alert instances or metrics. Example: `service`, `region`.
- One or more string columns - _optional_. These become **labels** for the alert instances or metrics. Examples: `service`, `region`.
Consider the following query results: