MS Access: Only show unique values in a query in Access 2007
Question: In Microsoft Access 2007, I've created a query and I only want to display the unique values. How do I do this in Access?
Answer: Open your query in design view. Right-click somewhere in the Query window beside a table (but not on a table) and select Properties from the popup menu.
When the property editor appears, make sure that the top of the editor says:
Set the "Unique Values" property to Yes. Then close the property editor by clicking the X in the top right corner.
This property is specific to the query that you are working on. So you will need to repeat the same steps on each query that you wish to display unique or distinct values.