How to Use a Parameter Query in LibreOffice Base
A parameter query is a type of query that prompts the user for a value or a condition before running. This can be useful when you want to filter or limit the data based on a variable criterion. For example, you can use a parameter query to find all the records that match a specific name, date, or category. In this video, I will show you how to create and use a parameter query in LibreOffice Base, the free and open source database application. Base database tutorial.

To create a parameter query, you need to follow these steps:

1. Open your database and switch to the Queries section.
2. Click on the Create Query in Design View button.
3. Add the table or tables that contain the data you want to query.
4. Drag and drop the fields you want to display in the query result to the Field row in the design grid.
5. In the Criteria row, enter a colon followed by a name for the parameter. For example, :Name, :Date, or :Category. This name will be used as the label for the prompt dialog box.
6. Save and run your query. You will see a dialog box asking you to enter a value or a condition for the parameter. For example, if you entered :Name as the parameter, you will see a dialog box with the label “Enter Name”.
7. Enter the value or condition you want to use for the parameter and click OK. The query will run and display the records that match your criterion.

You can also use more than one parameter in your query, as long as you separate them with commas in the Criteria row. For example, :Name, :Date will prompt you for both a name and a date value or condition.

Parameter queries are a powerful and flexible way to create dynamic queries that adapt to your needs. You can use them to create reports, forms, or subqueries that depend on user input. I hope this video was helpful and informative. Thank you for watching and happy querying!
How to Use a Parameter Query in LibreOffice Base.
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