cloud-fan commented on a change in pull request #30479:
URL: https://github.com/apache/spark/pull/30479#discussion_r538420019
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/stringExpressions.scala
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@@ -2082,6 +2082,64 @@ case class UnBase64(child: Expression)
}
}
+object Decode {
+ def createExpr(params: Seq[Expression]): Expression = {
+ params.length match {
+ case 0 => StringDecode(Literal.create(null, StringType),
Literal.create(null, StringType))
+ case 1 => StringDecode(params.head, Literal.create(null, StringType))
Review comment:
do we really allow 0 or 1 parameter before?
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