Select Query Based On Another Field Value

Jun 28, 2007

Hi,

I am trying to write a query that looks at a set of parts that are assigned to the same "Asset" number, and takes the sum of all prices for that collection of parts.

I have the query set up to do this without any problem. Where I am stuck is that in the table containing the details of parts, there are three possible prices. What I need it to do is take price c if there is no value in prices b or a, price b if there is no price in price a (otherwise take price a).

I have tried this using the criteria ="price a" = 0 AND "price b" = 0 (for price c)
and ="price a" = 0 (for price b criteria). When I run the query I get a "Data type mismatch in query expression" error.

Can anyone advise?

Thanks,

Ryan

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