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I have a number of combo boxes set up to allow users to select values with which to query tables. How can I setup these boxes so that if nonvalue is selected, the query is carried out using all values?

Further to my previous message, I have set up a list box to allow multiple selections. How can I use these multiple selections in a query to select rows based on each value. the syntax I have (... = [forms]![formname]![listboxname]..)does not seem to work.

I have a combo box set up which is used to query a table by retrieving rows based on a selected value in the combo box. I am trying to add the function to select more than 1 item from the combo box in order to retrieve rows relating to each selection. Is this possible?

I am trying to use a combo box on a form to allow a user to select a value with which to query a table. I have created the combo box using a query to retrieve the relevant values from the original table, and have written a separate query which works when I manually enter the value to...