The issue is that Tableau Desktop does not allow you to union files across data location/connections. A lot of users decide to use Tableau because they want to evaluate many data sources, so they need the ability to cleanse and prep multiple files or. I'm using Tableau 10.5 still, so perhaps there is an easier way to do this is in the latest version of the software, but my issue was that I have 4 csv files of data in one network location and a separate csv file in a different network location that I want to union together. How to have multiple data sources in the same workbook, but not join or blend their data. Use a custom connector built with the Tableau Connector SDK. Not that data blending doesn't work, but it can be difficult for non-IT users to understand the level at which their data is being linked. Union multiple data sources Vik Wu (Customer) asked a question. For more information about connectors in the exchange, see Use partner-built connectors. Previously, if you wanted to use multiple data connections, they were separate and your only option to bring them together was data blending (unless you wanted to put the data in the same location on the back end) I try to avoid data blending at all costs. By providing a visual and direct path to prep your data, you can get your hands on quality data in just a few clicks. I particularly like the ability to union csv files, pivot your data, and creating multiple connections to be used in a single data source. Tableau Prep Builder provides a modern approach to data preparation, making it easier and faster to combine, shape, and clean data for analysis within Tableau. Specifically, you cannot use cross-database joins with these connection types: Tableau Server. All the table names within the excel file are located on the left hand side in the. In my example, I connected to an Excel file and I dragged in the '2018 Orders' table onto the flow pane. You will first need to connect to your data and drag in the table you need into Tableau Prep. That’s because they aren’t supported for cross-database joins yet. Analyze and blend data from multiple sources using Tableau and its functionality, including data blending, joins, and unions to create meaningful insights. How to Union Multiple Tables in Tableau Prep Using a Wildcard. You’ll notice that a number of the connection types are grayed out. Tableau has made a lot of progress in regards to preparing your data and I'm not even including Tableau Prep in that statement. Back on the data tab, click the add link to add other connections to this data source.
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