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  1. #1
    Paul H's Avatar
    Paul H is offline Expert
    Windows XP Access 2010 32bit
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    Sep 2011
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    Creating a unique index on two fields

    I need to create a unique index in a table containing two fields, batch_ID and Product_ID. For each batch, a product should only be submitted one time this should be a unique identifier, a candidate key of sorts I believe. I've received instructions on how to do this, but I'm having trouble. When I click on the index window it pops up with the primary key (auto-number) and several other fields. It won't let me remove the primary key from the list of fields due to existing relationships. How do I create an index with just those two fields?

    p.s. I don't want to change my primary key, I just want to enforce the composite index. I hope that's clear.

  2. #2
    boblarson is offline --------
    Windows 7 64bit Access 2010 32bit
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    You can't remove, or change the primary key. But look at my "Quick Tutorial" here:
    http://www.btabdevelopment.com/ts/mfi
    to see how to do this.

  3. #3
    Paul H's Avatar
    Paul H is offline Expert
    Windows XP Access 2010 32bit
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    Thumbs up

    I knew this was simple. Thank you.

    Now, tell me why the Access Help was so "helpless"? You don't have to answer that question.

  4. #4
    boblarson is offline --------
    Windows 7 64bit Access 2010 32bit
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    I find that pictures simplify things immensely, so that is why I created what I call my "Quick Tutorials."

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