Error: "Unable to materialize temporary table" Joining Data Sources
Published: 31 Aug 2016 Last Modified Date: 30 Aug 2017
When joining across multiple data sources, the following error might occur:
Unable to materialize temporary table
Tableau Desktop 10
Update Tableau Desktop to version 10.0.6 or 10.1.4 before altering any antivirus exceptions, as a known issue (ID: 593435) regarding Cross Database Joins was resolved in the previously mentioned maintenance releases. For more information about how to how upgrade, see Upgrading Tableau Desktop.
Work with your IT team to add the below files, located in the Tableau bin folder, as exceptions to your antivirus software and Windows Defender. Note: Even if there is no antivirus software installed, Windows Defender may still be preventing the join from completing.
By default, the Tableau bin folder is located by default at C:\Program Files\Tableau\Tableau <VERSION>\bin for 64-bit versions of Tableau Desktop or C:\Program Files (x86)\Tableau\Tableau <VERSION>\bin for 32-bit versions of Tableau. Desktop.
An antivirus is preventing Tableau Desktop from working as expected.