Performing LEFT OUTER minus INNER JOIN in Tableau

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I have a need that requires me to LEFT OUTER JOIN minus INNER JOIN two data sources in Tableau.

What is the best way to do this in Tableau at the data source? Tableau only supports the following joins: inner, left, right, and full outer.
Mar 29, 2022 in Tableau by Vaani
• 7,060 points
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1 answer to this question.

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If you're using Tableau Desktop, you may create a datasource filter that uses the second data source's join key.

1. From source1 to source2, create a left join.
2. Create a new datasource filter for source2.join key by going to the "Condition" tab, selecting "By formula," and using "ISNULL([source2.join key])" as the formula.

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answered Apr 5, 2022 by Neha
• 9,060 points

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