This code or description refers to a **dynamic variable creation...

This code or description refers to a dynamic variable creation process in Grafana dashboards, where you want to handle and manipulate values (e.g., store names) to impact or filter other panels in the same dashboard.

Here's the explanation of what would happen if you follow this logic:

1. Data Source Query: The Grafana dashboard variable aggregates data from a data source (e.g., your storage or database containing business store information). The data source query, specific to your Grafana setup (e.g., PromQL, SQL, or a specific backend), retrieves a distinct set of store names or values.

2. Variable Creation:

   • Based on the retrieved data set (e.g., store names), Grafana dynamically populates the desired variable.
   • You can configure this variable in the dashboard settings under "Variables". For example, you might set the query to fetch all stores from your database, such as:

     SELECT DISTINCT store_name FROM stores_table
     

     or, if you're using Prometheus:

     label_values(store_metric, store)
     

3. User Interaction with Variable:

   • The variable appears as a dropdown or multi-select menu in your dashboard.
   • The user can select or manipulate the values from this dropdown to filter store-specific data.

4. Passing the Variable to Panels:

   • The selected value(s) from the variable can dynamically impact other visualization panels in the same dashboard.
   • For example, by using $variable_name (or ${variable_name}), you can reference this variable in your panel queries to filter data.

5. Effect on Panels:

   • When the selected store values in the variable change, all panels or queries inside the dashboard referencing that variable get updated. For instance:
     • If the user selects "Store A" in the dropdown, all panels will filter data to show only Store A-related information.

This mechanism helps create interactive, dynamic dashboards where selections at the top-level variables propagate context-sensitive changes to all panels below.