# Getting started with query parameters

Query parameters are required for content inside a dashboard panel to receive values used to filter data from a filter control. They are also required when receiving values from content in other dashboard panels that are broadcasting values associated with content linking. The way in which query parameters are defined is different depending on the type of content you are placing inside your dashboard panels:

| If                                                       | Then                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| -------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| You are defining parameters in the Analyzer...           | See [Add query parameters to Analyzer reports](/pba/9.3-analytics/pentaho-analyzer-cp/advanced-topics/add-query-parameters-to-analyzer-reports-task-article.md).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
| You are defining parameters for a chart or data table... | Use the Query Editor to define your parameterized query. See [Linking Charts and Data Tables](https://github.com/pentaho/documentation/blob/main/PDIA/9.3/Analytics/Pentaho%20Dashboard%20Designer/Pentaho%20Dashboard%20Designer%20cp/Advanced%20topics/Use%20content%20linking%20to%20create%20interactive%20dashboards/Link%20charts%20and%20data%20tables=GUID-F4CF28AD-A6BE-4F1F-8D39-FE26FCDBEC30=1=en=.md) and [Linking Columns in a Data Table to Content in other Dashboard Panels](/pba/9.3-analytics/pentaho-dashboard-designer-cp/advanced-topics/use-content-linking-to-create-interactive-dashboards/link-columns-in-a-data-table-to-other-dashboard-panels.md). |


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.pentaho.com/pba/9.3-analytics/pentaho-dashboard-designer-cp/advanced-topics/use-content-linking-to-create-interactive-dashboards/getting-started-with-query-parameters-pdd.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.