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Tableau Semantics
Create a Union

Create a Union

Merge datasets that share similar structures in a logical view. You can create one union per logical view. You cannot combine unions and joins.

Required Editions

Available in: All editions supported by Data 360. See Data 360 edition availability.
User Permissions Needed
To create a union:

Permission set:

  • Data Cloud Architect

AND

Semantic Models object

  1. In Data Cloud, on the Semantic Layer tab, select a data model.
  2. Create or edit a logical view.
  3. Select the data object you want to create a union for, and then click the plus sign.
  4. From the dropdown menu, select Create Union.

    Add union to LV

  5. In the Select Data Object for Union window, select the objects you want to unite. You can select up to nine objects.

    Add union to LV

    The merged fields in the union receive metadata from the first added object.
  6. Select the fields (table columns) that you want to include in the union.
  7. Click Save.
    A preview of the selected object and fields appears.

    Union preview

  8. Select matching fields. These are fields that represent the same information and can be merged into one. Click Add when done, You must match at least two fields.
  9. Search for matching fields and click Add when done. You must match at least two fields.

    Matching fields

  10. When all sets have been added, click Apply to add the new union to the logical view. The union appears in the Semantic Model Builder Canvas.

    LV with union in canvas

 
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