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Data Engineering
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Does Spark Structured Streaming supports `OutputMode.Update` for Delta tables?

ruslan
New Contributor II

Does Spark Structured Streaming supports `OutputMode.Update` for Delta tables?

1 REPLY 1

ruslan
New Contributor II

Nope, it's not supported, but you could use a MERGE statement inside of a forEachBatch streaming sync

Documentation on MERGE

https://docs.databricks.com/spark/latest/spark-sql/language-manual/delta-merge-into.html

Documentation for arbitrary streaming sinks

https://docs.databricks.com/spark/latest/structured-streaming/foreach.html

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