Managing Blank Fields in Search Form

I am trying to create an advanced search form to filter a recordset of events, so that I can search through these events based on parameters such as category, time, date, place, etc. Right now, because I'm new at this, I have been trying to create a filter with only two parameters, category and price. 'Category' is the first field in the form and 'price' is the second field in the form, followed by fields for time and location. When I search by category, the search works fine. When I search by category and price, only the category parameter works, and it doesn't filter by price. When I search only by price, the recordset comes up as blank. Does this have something to do with fields in the form being left empty or do empty fields have no effect on the search. When I test my query statement on my SQL query browser, it works fine, so I don't think that's the problem. Any help would be appreciated.

Not an ADDT-specific question so I never responded. However the OP re-posted here in the Dreamweaver Application Development forum which produced a very interesting thread.

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Frank,
Thanks for your reply and yes I'm using BC (I allways forget that important piece of information).
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- I suppose that assigning a pattern to a date column in a BO is for display purposes and in some cases to have the right conversions in where clauses. In this case, choosing yyyy-MM-dd (that is the default) is a coincidence and in this case, you are right it is superfluous. But suppose we use dd/MM/yyyy. In this case, the date will be rendered with this new pattern. Even more, I suppose that in a query by example, when building the where clause, JDev expects the given date to be a string with that same pattern (dd/MM/yyyy). So, we have the first conclusion: The selected date must be a String with the given pattern. That is why I assigned a converter to the selectInputDate component.
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