Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/11815#discussion_r56779275
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/CatalystConf.scala ---
@@ -22,6 +22,8 @@ import org.apache.spark.sql.catalyst.analysis._
private[spark] trait CatalystConf {
def caseSensitiveAnalysis: Boolean
+ def orderByOrdinal: Boolean
--- End diff --
last question: should we have 2 configs for order by and group by? Their
behaviours are similar, maybe we can just use one config?
cc @rxin
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