cloud-fan commented on issue #25626: [SPARK-28892][SQL] Add UPDATE support for DataSource V2 URL: https://github.com/apache/spark/pull/25626#issuecomment-531629992 Another benefit I can think of: with the parser rule and the UPDATE statement added, at least users can add catalyst rules to catch the `UpdateStatement` and implement update with private APIs (`QueryPlan`, `Expression`, etc.). This can be somewhat useful if we can't finish the row-based DS V2 update API before Spark 3.0.
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