Mismatched Rows in Linking Field When Blending

Published: 23 May 2016
Last Modified Date: 14 Oct 2019


When using a field with mismatched values (for example, one data source has some misspellings) as a linking field when data blending, Tableau Desktop does not match the rows, even if the values have been corrected by using aliases. 



  • Tableau Desktop
  • Blended data


Option 1: Change the values in the data source to match.

Option 2: Create a calculated field to correct the mismatched values, and then edit the data relationship to replace the original field with the calculated field.

For example, if  [Name] field has misspellings in one data source then create a calculation like the following:

IF [Name] = "misspelled field 1"
THEN "correct spelling field 1"
ELSEIF [Name] = "misspelled field 2"
THEN "correct spelling field 2"
ELSE [Name]


Tableau Desktop uses the data source values of a field to match rows. Even if the aliases have been corrected, Tableau Desktop will not match up rows that do not have the exact same data source value.
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