NULL values in ACCESS reports? -

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i created simple report has 5 columns (companyname, bought, sold, returned, total) looks like.

companyname bought sold returned total

with exception of company name, every value number. created simple queries bought, sold , returned. total used arithmetic in main query (basically sum of bought, sold, returned (returned negative)). problem came across companies, of columns (bought,sold,returned) null since ex: don't have returned when run report, doesn't show me value total. unless have values in three(bought sold , returned) - nothing gets displayed in total. don't want display zeros in report because clustered, there way me convert null 0 when calculation , hide report?


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