Github user squito commented on a diff in the pull request:
https://github.com/apache/spark/pull/19389#discussion_r141949009
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/TypeCoercion.scala
---
@@ -149,7 +149,7 @@ object TypeCoercion {
})
}
- private def findWiderCommonType(types: Seq[DataType]): Option[DataType]
= {
+ def findWiderCommonType(types: Seq[DataType]): Option[DataType] = {
--- End diff --
surprisingly, `TypeCoercion` is totally public, so this should probably be
`private[sql]`.
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