cloud-fan commented on code in PR #46987:
URL: https://github.com/apache/spark/pull/46987#discussion_r1642274556
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/CollationTypeCasts.scala:
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@@ -78,6 +78,11 @@ object CollationTypeCasts extends TypeCoercionRule {
}
raiseError.withNewChildren(Seq(raiseError.errorClass, newErrorParams))
+ case framelessOffsetWindow @ (_: Lag | _: Lead) =>
Review Comment:
so we only want to allow implicit cast for lead/lag regarding string
collations?
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