Code:
<cfquery datasource="digitalnewspapers1" name="digitalnewspapers1">
SELECT digitalnewspapers1.filename, digitalnewspapers1.dateofissue, digitalnewspapers1.county, digitalnewspapers1.title
From digitalnewspapers1
WHERE 0=0
<cfif #FORM.filename# is not "">
AND FILENAME LIKE '%#FORM.FILENAME#%'
</cfif>