Learn how to check, replace, compare, and aggregate NULL values in a database query using common techniques and examples.

Query is a request for data. In this article we are going to explain how to create and modify query in Microsoft Access the easy way.

How To Indicate A Null Value Null value means "I don't know if there is a value, or what it is." To allow null value in a field, make sure "Required" in field properties in design view is set No. To ...

In the Database window, select Queries and double-click Create Query In Design View. In the Show Table dialog box, double-click Suppliers to add it to the query. You also will need data from the ...