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Error "Incompatible Types" Appears When Merging Mismatched Fields After Doing Union


Published: 16 Feb 2018
Last Modified Date: 11 Jul 2018

Issue

When connecting CSV or Excel files as union and using the feature "Merge Mismatched Fields" in Tableau Desktop 10.5, the following error might occur: 

"Incompatible types"

Environment

Tableau Desktop 10.5

Resolution

Upgrade to Tableau Desktop 2018.1.3; 10.5.6 or a later version. For more information, see Upgrading Tableau Desktop in Tableau Help.

Cause

This behavior is related to a known issue (ID: 740954) which has been fixed in a recent release of Tableau Desktop.
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