szehon-ho commented on code in PR #53360:
URL: https://github.com/apache/spark/pull/53360#discussion_r2621162271
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/AssignmentUtils.scala:
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@@ -178,11 +182,25 @@ object AssignmentUtils extends SQLConfHelper with
CastSupport {
} else if (exactAssignments.isEmpty && fieldAssignments.isEmpty) {
TableOutputResolver.checkNullability(colExpr, col, conf, colPath)
} else if (exactAssignments.nonEmpty) {
- val value = exactAssignments.head.value
- val coerceMode = if (coerceNestedTypes) RECURSE else NONE
- val resolvedValue = TableOutputResolver.resolveUpdate("", value, col,
conf, addError,
- colPath, coerceMode)
- resolvedValue
+ if (updateStar) {
+ val value = exactAssignments.head.value
+ col.dataType match {
+ case _: StructType =>
Review Comment:
Yes, its handled in the TableOutputResolver code (createNamedStruct will
fill a null in those extra fields)
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