How to Query a Query in Access

In Microsoft Access, you can query a query to perform more complex data analysis. This is known as a nested query. Nested queries allow you to combine the results of multiple queries into a single result set.

Step-by-Step Instructions

1. Open the database containing the query you want to query.
2. In the Navigation Pane, right-click the query you want to query and select Design View.
3. In the SQL View of the query, add the following statement to the top of the query:

   SELECT * FROM (
     SELECT *
     FROM [Query1]
   ) AS [NestedQuery]

4. Replace [Query1] with the name of the query you want to query.
5. Click Run to execute the query.

Example

The following example queries the Customers query to find all customers in the state of California:

SELECT * FROM (
  SELECT *
  FROM Customers
) AS [NestedQuery]
WHERE State = 'CA'
  

Tips

• You can use nested queries to perform complex data analysis, such as finding the top 10 customers in a specific region.
• When nesting queries, it is important to use parentheses to ensure that the queries are executed in the correct order.
• You can use multiple levels of nesting to create complex queries.

Conclusion

Querying a query in Access is a powerful technique that can be used to perform complex data analysis. By following the steps outlined in this article, you can easily create nested queries to get the data you need.

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