Can I use MAX() after a WHERE clause? I have a table with van usage from where I need the MAX mileage value from every van and then compare it to a value "next_service_due" from another table. How can I do this? I need that information so I can pop up a report on the vans that the have service coming soon. I am using Access 97.
Yes, you can do what you want, but with the HAVING clause, not the WHERE clause.
Here's a sample query --
select VanNumber, max(VanMileage) from VanUsage group by VanNumber having max(VanMileage) > ( select next_service_due from AnotherTable )
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This was first published in February 2002