Product release and download

Tableau Prep 2020.3.1

We recommend using the newest maintenance release of this version, 2021.1.1, which contains additional fixes.

Download Tableau Prep 2021.1.1

Build number

Download Tableau Prep 2020.3.1

Release date

Tue, August 11, 2020

Product support

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Changes were applied to improve security. See ADV-2020-039 in Security Bulletins for more details.

Resolved Issues

Issue ID Description

A "Failure parsing AQL: No such column" error could occur after joining, pivoting, and then aggregating one of the resulting measure fields.


Tableau Prep Builder could show the wrong schema belonging to another data source.


When open for an extensive amount of time and logged in to Tableau Server, the product would sometimes become unresponsive.


Flow performance history would not display correctly when run before 00:00 UTC when relative date filter set for "Today" and Tableau Server set to non-UTC.


Selecting a join node sometimes resulted in the error "System error: java.lang.RuntimeException: java.lang.IllegalStateException: MUST have a valid name for a relation"


After a published data source was overwritten by Tableau Prep Builder, field names were sometimes garbled on the Lineage tab.


Flows based on Athena data sometimes output incorrect dates when run via the Command Line Interface.


Connecting to Oracle from Tableau Prep sometimes resulted in an "oci.dll not found" error.


Generating a random sample of Snowflake data failed with the error "System error: Unable to run input node"


Saving flow output sometimes failed unexpectedly due to an internal issue with field ordering.


Connecting to Tableau Server from Tableau Prep failed with a "Cannot connect to Tableau Server" error if a proxy exceptions list contained 1024 or more characters.


Tableau Prep Builder failed incremental refresh when the published extract is encrypted.

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