![]() When finished, close the join dialog and join canvas.Īfter you've created a join, Join Your Data. Note: You can delete an unwanted join clauses by clicking the "x" that displays when you hover over the right side of the join clause. Add one or more join clauses by selecting a field from one of the available tables used in the data source, choosing a join operator, and a field from the added table. With that connection selected, drag the desired table to the join canvas.Ĭlick the join icon to configure the join. If your next table is from another data source entirely, in the left pane, under Connections, click the Add button ( in web authoring) to add a new connection to the Tableau data source. Select Open from the menu or double-click the first table to open the join canvas (physical layer).ĭouble-clicking a table on the relationship canvas opens the join canvasĭouble-click or drag another table to the join canvas. Note that if you drag out a second table at this point a relationship will form. To combine published data sources, edit the original data sources to natively contain the join or use a data blend. Note: Not all data sources support cross-database joins, including published Tableau data sources. If you combined tables using a cross-database join, Tableau colors the tables in the canvas and the columns in the data grid to show you which connection the data comes from. These can be in the same data source (such as tables in a database or sheets in an Excel spreadsheet) or different data sources (this is known as a cross-database join). To create a join, connect to the relevant data source or sources. If you need to do multiple joins, clean up field names, change data types, perform multiple pivots, or other sorts of involved data prep, consider using Tableau Prep Builder (Link opens in a new window). Tip: While Tableau Desktop has the capability to create joins and do some basic data shaping, Tableau Prep Builder is designed for data preparation. ![]() To join data and be able to clean up duplicate fields, use Tableau Prep Builder instead of Desktop Fields used in the join clause cannot be removed without breaking the join.If you change the data type after you join the tables, the join will break. ![]()
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