Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/7643#discussion_r35689795
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/HiveTypeCoercion.scala
---
@@ -753,6 +753,9 @@ object HiveTypeCoercion {
case (DateType, TimestampType) => Cast(e, TimestampType)
case (TimestampType, DateType) => Cast(e, DateType)
+ // Implicit cast for functions like utc_timestamp
+ case (_: NumericType, TimestampType) => Cast(e, TimestampType)
--- End diff --
hm probably not - @adrian-wang is there a reason why this is needed?
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