cloud-fan commented on a change in pull request #30412:
URL: https://github.com/apache/spark/pull/30412#discussion_r526227775
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala
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@@ -3088,7 +3088,12 @@ class Analyzer(override val catalogManager:
CatalogManager)
val projection = TableOutputResolver.resolveOutputColumns(
v2Write.table.name, v2Write.table.output, v2Write.query,
v2Write.isByName, conf)
if (projection != v2Write.query) {
- v2Write.withNewQuery(projection)
+ val cleanedTable = v2Write.table match {
+ case r: DataSourceV2Relation =>
+ r.copy(output = r.output.map(CharVarcharUtils.cleanAttrMetadata))
Review comment:
We remove the char/varchar metadata after length check expressions are
added, so that we don't do it repeatedly and this rule is idempotent.
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