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I’ve attempted to follow the recommendations here to detect duplicates in a field but have not been successful and could use some expert eyes on what I’ve implemented. I did put a reply on that thread but since it’s a couple of years old, figured I should start my own question. Here are 2 screenshots from the 2 tables in play. Anyone see where I went wrong? TIA!




values is a pure array, the formula you wrote needs to handle strings. So replace all instances of values with ARRAYJOIN(values)


values is a pure array, the formula you wrote needs to handle strings. So replace all instances of values with ARRAYJOIN(values)


Thanks for the reply @Kamille_Parks


I thought the field {All IDs} being an ARRAYJOIN already would then be put into the Number of IDs rollup as the long text result of the ARRAYJOIN?


Thanks for the reply @Kamille_Parks


I thought the field {All IDs} being an ARRAYJOIN already would then be put into the Number of IDs rollup as the long text result of the ARRAYJOIN?


You’re doing a rollup of a rollup. So you’re still dealing with an array of strings, even though every record is linked to just one record its still an array.


You’re doing a rollup of a rollup. So you’re still dealing with an array of strings, even though every record is linked to just one record its still an array.


Thank you for the explanation and this worked great!


I needed a similar setup and this worked for me. Having a rollup detect when an email is used multiple times as a way to track a duplicate person entry. 


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