2 Replies Latest reply on Oct 23, 2018 3:19 AM by Islam Dardeery

    Tableau Prep System Error Duplicate column name

    Islam Dardeery

      trying to join two tables from "custom SQL" with a statement like

       

      SELECT * FROM customers c

      JOIN sales s

      ON s.id=c.sales_id

       

      I get a system error states  " duplicate column name id"

       

      tableau prep error.JPG

       

      tableau prep version : 2018.2

      operating system: Windows10