Just saw this tip that easily solves a common problem:<br><br>1. To write a parameter query that returns one specified value OR <b>all</b> values when the user leaves the input blank, put a statement like this in the criteria row of the appropriate column:<br><i>(Like [Enter a city or leave blank for all cities]) Or Like [Enter a city or leave blank for all cities] Is Null</i><br><br>2. To allow the user to input a leading string OR leave the input blank, do it this way:<br><i>(Like [Enter first letter(s) of a city or leave blank for all cities] & "*"
Or Like [Enter a city or leave blank for all cities] Is Null</i><br><br>The key is what's inside the first and second set of brackets must be <i>exactly</i> the same or it will ask for input twice.<br>