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  1. #1
    donnysl is offline Novice
    Windows XP Access 2010 32bit
    Join Date
    Aug 2013
    Posts
    2

    Problem with IIF function

    I am trying to develop a query called "ro2" based on the values of two fields: R SO2 R, R SO2 L



    The query returns an error saying "You tried to execute a query that does not include the specified expression 'ro2: IIf([R S02 L] Is Null,[R S02 R],Avg([R S02 L]+[R S02 R]))' as part of an aggregate function"

    The query i am trying to use is below. it should say that: if "R SO2 L" is missing, use "R SO2 R", if not, use the average of the two values.

    ro2: IIf([R S02 L] Is Null,[R S02 R],Avg([R S02 L]+[R S02 R]))

    Any help would be great.

    Thank you,
    Donny

  2. #2
    Bob Fitz is offline Access Developer
    Windows XP Access 2003
    Join Date
    May 2011
    Location
    Essex UK
    Posts
    2,193
    Just a guess, but you might try:

    ro2: IIf(IsNull([R S02 L]),[R S02 R],Avg([R S02 L]+[R S02 R]))
    If this helped, please click the star at the bottom left of this posting and add to my reputation. Many thanks.
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    Bob Fitzpatrick

    I have never failed. I have found a thousand ways that do not work!

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  3. #3
    Rainlover's Avatar
    Rainlover is offline Expert
    Windows 7 64bit Access 2003
    Join Date
    Nov 2009
    Location
    Queensland Australia
    Posts
    691
    Why use Average.

    There are only two values.

    Suggest (([R S02 L]+[R S02 R]) /2)

  4. #4
    donnysl is offline Novice
    Windows XP Access 2010 32bit
    Join Date
    Aug 2013
    Posts
    2
    Bob,

    it says that there is an "Extra ) in query expression"

Please reply to this thread with any new information or opinions.

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