Anish Mahto created SPARK-57093:
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             Summary: SCD1 Support `ignore_null` API
                 Key: SPARK-57093
                 URL: https://issues.apache.org/jira/browse/SPARK-57093
             Project: Spark
          Issue Type: Sub-task
          Components: Declarative Pipelines
    Affects Versions: 4.3.0
            Reporter: Anish Mahto


Support ignore-null functionality for SCD1 pipelines. When CDC events are 
received with null values for columns explicitly marked as ignore-null, the 
null should be ignored and the SCD1 execution flow should treat them as a no-op 
change to the last known value for said column at that point in time.



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