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+===== Either table =====
+Between two input datasets (a result of previous transformation and a final state of another table) chooses one that is not empty. If both tables are not empty then it gives preference based on transformation settings.
+**Use cases**
+  * "If-then" types of workflows. In this scenario the workflow should be organized in a way that makes empty either one table (when a condition is fulfilled) or another (when the condition is NOT fulfilled). Then Either transformation is used to pick a non-empty result dataset of one of these tables. Since both tables can have different sets of transformations it allows applying different transformation logic depending on the condition.
+  * Insertion of arbitrary datasets at any point of a transformation chain with the help of [[transformations:sandbox|Sandbox transformation]]
+**See also**
+  * [[transformations:sandbox|Sandbox transformation]]