Скачать или смотреть How to Filter Projects by a Single Selected City Using SSRS and SQL

Learn how to modify your SQL query in SSRS to filter projects based on a single selected city using SSRS multi-value parameters.
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Creating dynamic and user-friendly reports in SQL Server Reporting Services (SSRS) can often require custom query modifications to meet specific needs. One common requirement is filtering data by a specific criterion, such as a selected city. In this guide, we’ll dive into how to customize your SSRS query to filter projects based on a single selected city.

Understanding SSRS Multi-Value Parameters

SSRS multi-value parameters allow users to select multiple values for a single parameter. This feature is particularly useful for scenarios where users need to filter reports based on a list of values. However, there might be occasions when it is necessary to filter the report based on only one of these values, such as a single selected city.

Modifying the SQL Query

When you need to filter projects by a single selected city, modifying the SQL query appropriately is crucial. Here is a step-by-step guide on how to achieve that:

Define the Parameter:
First, create a report parameter that allows the user to select the city. This parameter can be defined within SSRS Report Data as a multi-value parameter, but we can limit it to a single value selection.

Modify the SQL Query:
In your SQL dataset query, you need to ensure that it properly accepts and filters by the selected city. Here is an example of how you can modify the SQL to filter projects by a selected city:

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Parameter Usage in SSRS:
Specify the @SelectedCity parameter in your dataset properties to use the value selected by the user. This ensures that the query dynamically filters the results based on the selected city:

Go to the dataset properties

Under "Parameters", map the @SelectedCity parameter to the report parameter created in step 1.

Testing Your Report:
Preview your SSRS report and select a city from the dropdown to verify if the report correctly filters the projects based on the selected city.

Considerations and Best Practices

Parameter Types: Ensure the parameter type matches the data type in the database (e.g., if "City" is stored as a string, the parameter should also be of type string).

Default Values: Provide a set of possible cities as default values for the parameter to enhance user experience.

Validation: Implement validation to ensure the parameter value is not null or empty before executing the query.

By following these steps, you can effectively filter projects by a single selected city in SSRS using SQL. This allows for more precise and user-specific data reporting, making your reports more interactive and useful.

Conclusion

Incorporating user-specific filters such as a selected city is a common requirement in report generation. Understanding how to utilize SSRS multi-value parameters and adapting your SQL query accordingly ensures your report is not only accurate but also user-friendly. Implement these steps, and you will be able to seamlessly filter projects by a single selected city in your SSRS reports.