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  1. #1
    aha121 is offline Novice
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    A simple way to query normalized data into long format for reporting?

    Hi

    I'm fairly new to the concept of normalizing my database and have a quick question regarding getting normalized data into long format for reporting. For example, we collect a bunch of different measurements on birds, and what we collect is species dependent. Therefore, I'd like to simply create a table of measurements; the columns would be something like 1) autonumber (primary key) 2) foreign key (to link back to a specific capture event) 3) measurement type (there are probably about 25 different types, but again, only a few that we take for each foreign key [ie capture event]), 4) measurement (the actual length/width/mass/etc numerical measurement), and 5) units (ie was it in mm, cm, g, kg, etc).

    But for reporting, I need to get these into long format. For example, for capture event 001 (ie the foreign key) we measure bill length, head length, and body mass. Those are stored in 3 rows in our Measurements table. For capture event 002 (ie the foreign key), we measure bill length, head length, and tail length. Those are stored in 3 rows in our Measurements table.

    So I'd like to create a query that reports all the measurements in a single row, and the columns for each measurement. I can easily do this by creating a bunch of sub-queries for each measurement type, but this seems overly tedious. Is there a better way?



    Thanks much for any help anyone can offer!!!

  2. #2
    pbaldy's Avatar
    pbaldy is offline Who is John Galt?
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    Play around with the crosstab query wizard and see if you get the desired result.
    Paul (wino moderator)
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  3. #3
    aha121 is offline Novice
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    Maybe I'm missing something, but I cant seem to get the crosstabs option to work (I had tried that originally, then tried it again). The key is I dont want compiled info or average, just the raw data, but switched from short to long format.

  4. #4
    Minty is offline VIP
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    Sometimes (frequently) you can use Max or Min with a crosstab to simply display the value "as is" if the grouping of the other fields means it is a unique value.
    DLookup Syntax and others http://access.mvps.org/access/general/gen0018.htm
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  5. #5
    pbaldy's Avatar
    pbaldy is offline Who is John Galt?
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    Minty has probably answered your question, but if you're still stuck perhaps you can attach a sample db here we can play with?
    Paul (wino moderator)
    MS Access MVP 2007-2019
    www.BaldyWeb.com

  6. #6
    ssanfu is offline Master of Nothing
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    Quote Originally Posted by aha121 View Post
    So I'd like to create a query that reports all the measurements in a single row, and the columns for each measurement
    Will each "Capture event" always have 3 records in the Measurements table?
    You might try writing a UDF to concatenate the readings into a single row for each capture event. Check out Allen Browne's site for Concatenate values from related records
    HTH
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