>max() and min() are always problematic in SQL - SELECT statements, because they have another meaning: the maximum value for a single field, within a set of grouped records.
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>Replace it with an iif(), for example:
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>iif(date_fld1 - date_fld2 > 0, date_fld1 - date_fld2, 0)
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>... or create a UDF:
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>MyMax(date_fld1 - date_fld2, 0)
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When trying your first suggestion (with IIF) I get no error but the numbers are (for some reason) so large that the report shows all asterisks. Even though the numbers should not be large at all (as I see the values in date_fld1 and date_fld2). I would prefer not to use the UDF approach as it may not be available when user runs this or that report. I will keep trying the variations of IIF to see how I can get it to work.
Thank you very much for your help.
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