Incorrect Number of Rows Is Displayed At Clean Step After Wildcard Union In Tableau Prep Builder

Published: 01 Mar 2021
Last Modified Date: 08 Jul 2022


At a clean step after wildcard union, the number of rows are displayed as around 300,000 even though the data source has more than 300,000 rows but the output file conations all rows. The issue does not occur at a clean step after an union step and the correct row number is displayed.



  • Tableau Prep Builder


Select "use all data" at the data sample tab of the input step to see the correct numbers. 


While the "sampled" warning is not displayed, the sampling limit is still applied in this case.
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