dongjoon-hyun commented on code in PR #43717:
URL: https://github.com/apache/spark/pull/43717#discussion_r1387438376
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/numberFormatExpressions.scala:
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@@ -242,7 +242,7 @@ object ToCharacterBuilder extends ExpressionBuilder {
override def build(funcName: String, expressions: Seq[Expression]):
Expression = {
val numArgs = expressions.length
if (numArgs == 2) {
- val (inputExpr, format) = (expressions(0), expressions(1))
+ val (inputExpr, format) = (expressions.head, expressions(1))
Review Comment:
I'm not sure about this part.
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