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Thread: Primary key

  1. #1
    Join Date
    Jul 2001

    Primary key

    I have a table which has duplicate values within it. I now need to put a primary key on this column, but obviously am unable too. Can anyone give me an idea on how I can achive this without losing the data and also to be able to put a primary key on it.

    Something like copying to a temp table etc etc

    Thanks in advance


  2. #2
    Join Date
    Nov 2000
    Pittsburgh, PA
    You can use a sequence to create a new primary key and then add a unique index with novalidate to stop anymore duplicate values from being entered. You can lso combine the field with the duplicates with another field and make a concatenated key based on both fields.

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