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LMACAT's avatar
LMACAT
Regular Visitor
1 year ago
Solved

Duplicate value error but no duplicate values

I am not able to apply changes to a table in Power Query and am getting an error message that there is a duplicate value in a column in the table that is an ID number, but there are no duplicate values in tha column. How do I resolve this?

  • Anonymous's avatar
    Anonymous
    1 year ago

    Hi  LMACAT , 

    they are nine digit numbers 

    Check the data type of the ID column to confirm if it is 'Text'. If the same ID has a different number of spaces at the end, Power Query will recognize them as different values.

    Try use 'Text.Trim' function

     

6 Replies

  • Hello LMACAT , 

     

    Power query shows the top 1000 rows only, maybe the duplicate is not visible.

     

    and if the error is saying there's duplicate then there should be some sort of duplicate in a certain place.

     

    or maybe the relationship between two tables is 1 to 1 and there's a many in one of them.

    • LMACAT's avatar
      LMACAT
      Regular Visitor

      Hello @Idrisshatila. Neither is the case. I checked all the records in the table offline and it is not a duplicate, and the relationship to the other table is one-to-many.

      • Greg_Deckler's avatar
        Greg_Deckler
        Community Champion

        LMACAT What do the ID's look like? Remember, A1 and a1 are the same as far as the semantic model are concerned.