Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/16882#discussion_r100683913
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/TypeCoercion.scala
---
@@ -116,7 +116,7 @@ object TypeCoercion {
* i.e. the main difference with [[findTightestCommonType]] is that here
we allow some
* loss of precision when widening decimal and double, and promotion to
string.
*/
- private def findWiderTypeForTwo(t1: DataType, t2: DataType):
Option[DataType] = (t1, t2) match {
--- End diff --
(Added)
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