hemanthboyina commented on code in PR #58666:
URL: https://github.com/apache/spark/pull/58666#discussion_r4056891326
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sql/catalyst/src/main/scala/org/apache/spark/sql/execution/datasources/v2/DataSourceV2Relation.scala:
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@@ -602,12 +604,32 @@ object DataSourceV2Relation {
val catalystColStat = ColumnStat(distinct, min, max, nullCount,
avgLen, maxLen, histogram)
- output.foreach(attribute => {
- if (attribute.name.equals(key.describe())) {
- colStats = colStats :+ (attribute -> catalystColStat)
+ // Catalyst column statistics only support top-level attributes.
Prefer a unique exact name
+ // when the configured resolver matches multiple output attributes.
+ val fieldNames = key.fieldNames
+ if (fieldNames.length == 1) {
+ val fieldName = fieldNames.head
+ val exprIds = AttributeSeq.fromNormalOutput(output)
Review Comment:
done, thanks
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