cloud-fan commented on a change in pull request #26412: [SPARK-29774][SQL] Date
and Timestamp type +/- null should be null as Postgres
URL: https://github.com/apache/spark/pull/26412#discussion_r353027110
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala
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@@ -246,6 +247,68 @@ class Analyzer(
CleanupAliases)
)
+ /**
+ * For [[UnresolvedAdd]]:
+ * 1. If one side is timestamp/date/string and the other side is interval,
turns it to
Review comment:
for error reporting, I don't think that there is a perfect solution. We can
say that interval should be int to make the operation legal, or int should be
timestamp.
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