cloud-fan commented on issue #26167: [SPARK-28893][SQL] Support MERGE INTO in the parser and add the corresponding logical plan URL: https://github.com/apache/spark/pull/26167#issuecomment-549297124 Here is my proposal: Let's follow `InsertIntoStatement` and put logical plan in `MergeIntoStatement` directly. Then the analyzer resolves `MergeIntoStatement`, and planner converts `MergeIntoStatement` to physical plan(if we have merge API in the future). Once we migrate all commands to v2 completely, we can do the same for other commands as well.
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