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  1. Preface
  2. Mappings
  3. Mapping tutorial
  4. Parameters
  5. CLAIRE recommendations
  6. Data catalog discovery
  7. Visio templates

Mappings

Mappings

Lineage for lookup fields

Lineage for lookup fields

When you view the lineage of a field used in the lookup condition of a Lookup transformation, the downstream lineage includes all fields returned by the lookup.
For example, you have a source table with customer data and you want to augment the data with data from an orders table before loading the data to a new target table. You configure the Lookup transformation to return fields when the source field Src_CustomerID equals the lookup field Customer_ID. On the
Incoming Fields
tab of the Lookup transformation, you view the lineage for the Src_CustomerID field. The downstream lineage includes all fields returned by the lookup.
The following image shows the lineage for the Src_CustomerID field on the
Returned Fields
tab:

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