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  1. P

    Testing links

    Hello, I have a problem with my database. I have records ( key =ID) which are gathered in different fields GROUP ( from “1ECC” to “8ECC” in this example). Example: The IDs “14238” and “838b” are gathered in the GROUP “2ECC” I would like to identify GROUPs where at least one ID has a link...
  2. P

    Grouping from several comparisons

    Hello, I would like to identify groups that are totally independants. In this example, there would be 2 groups: -Albert, Alex and Claude that have one-to-one features in common: the eyes ( green) and/or hair (black) and/or nose(long) IN GROUP 1 -Audrey and Claire that have blonde hair IN...
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