[SPARK-53146][CONNECT][SQL] Make MergeIntoTable in SparkConnectPlanner side effect free #51876
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…r side effect free
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What changes were proposed in this pull request?
This PR refactors the
MergeIntoTablehandling inSparkConnectPlannerto make it side-effect free by separating the transformation and execution phases.Why are the changes needed?
Make MergeIntoTable side-effect free
Does this PR introduce any user-facing change?
No. This is a purely internal refactoring.
How was this patch tested?
Existing tests
Was this patch authored or co-authored using generative AI tooling?
Generated-by: Cursor 1.3.9