Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/19389#discussion_r150659762
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/PartitioningUtils.scala
---
@@ -468,14 +460,16 @@ object PartitioningUtils {
}
/**
- * Given a collection of [[Literal]]s, resolves possible type conflicts
by up-casting "lower"
- * types.
+ * Given a collection of [[Literal]]s, resolves possible type conflicts
by
+ * [[TypeCoercion.findWiderCommonType]]. See
[[TypeCoercion.findWiderTypeForTwo]].
*/
private def resolveTypeConflicts(literals: Seq[Literal], timeZone:
TimeZone): Seq[Literal] = {
- val desiredType = {
- val topType =
literals.map(_.dataType).maxBy(upCastingOrder.indexOf(_))
--- End diff --
Since this changes the schema, we can't change it without a conf.
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