beliefer commented on a change in pull request #34799:
URL: https://github.com/apache/spark/pull/34799#discussion_r764626922
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File path: sql/core/src/main/scala/org/apache/spark/sql/jdbc/JdbcDialects.scala
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@@ -208,6 +208,9 @@ abstract class JdbcDialect extends Serializable with
Logging{
case max: Max =>
if (max.column.fieldNames.length != 1) return None
Some(s"MAX(${quoteIdentifier(max.column.fieldNames.head)})")
+ case avg: Average =>
Review comment:
But for final aggregate, we uses `First` to replace `Average`.
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