LorenzoMartini commented on code in PR #36457:
URL: https://github.com/apache/spark/pull/36457#discussion_r866789627
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/regexpExpressions.scala:
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@@ -642,7 +642,7 @@ case class RegExpReplace(subject: Expression, regexp:
Expression, rep: Expressio
}
val source = s.toString()
val position = i.asInstanceOf[Int] - 1
- if (position < source.length) {
+ if (position < source.length || (position == 0 && source.equals(""))) {
Review Comment:
Addressed in 2280c24048c28f2a8b4c650af9c799face08dfb9
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