tdas commented on a change in pull request #27265: [SPARK-30555][SQL] MERGE
INTO insert action should only access columns from source table
URL: https://github.com/apache/spark/pull/27265#discussion_r368074337
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala
##########
@@ -1326,13 +1326,16 @@ class Analyzer(
DeleteAction(resolvedDeleteCondition)
case UpdateAction(updateCondition, assignments) =>
val resolvedUpdateCondition =
updateCondition.map(resolveExpressionTopDown(_, m))
- UpdateAction(resolvedUpdateCondition,
resolveAssignments(assignments, m))
+ // The update value can access columns from both target and source
tables.
+ UpdateAction(resolvedUpdateCondition,
resolveAssignments(assignments, m, true))
Review comment:
nit: use `paramName = false` for better readability.
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