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Using Date Functions (date_add, date_sub) With Fields Instead of Constant Values

Posted on 2007-11-15
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Last Modified: 2013-12-13
Hi,

I want to subtract a number of days from a date. Both the date and the number of days are stored in a record but I cant figure out how to use the DATE_ADD and DATE_SUB functions using fields and not constant values. I basically need:

   DATE_SUB(table.date_field, INTERVAL table.number_of_days DAY)

But this doesn't work. How can this be done?

Thanks,

Michael
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Question by:Xavior2K3
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steelseth12 earned 250 total points
ID: 20291241
DATE_SUB(table.date_field, INTERVAL CONCAT ( table.number_of_days, ' DAY'))
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by:Xavior2K3
ID: 20292390
Thanks :)
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