[spark] Fix exprId mismatch in MERGE INTO by constructing Join plan directly#7624
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Zouxxyy wants to merge 1 commit intoapache:masterfrom
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[spark] Fix exprId mismatch in MERGE INTO by constructing Join plan directly#7624Zouxxyy wants to merge 1 commit intoapache:masterfrom
Zouxxyy wants to merge 1 commit intoapache:masterfrom
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…irectly Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Purpose
Fix exprId mismatch bug in MERGE INTO when action expressions reference both source
and target columns (e.g.,
COALESCE(src.b, dest.b)).Replace Dataset API join (
sourceDS.join(targetDS, ...)) with manualJoinplan nodeconstruction, following the same pattern as Spark's
RewriteMergeIntoTable. Thispreserves original exprIds and eliminates the need for position-based rebinding.
Tests
Added 3 test cases in
MergeIntoTableTestBasecovering coalesce with dual-columnreferences: temp view source, Paimon table source, and subquery source.