nikolamand-db commented on code in PR #45856:
URL: https://github.com/apache/spark/pull/45856#discussion_r1565992929
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/regexpExpressions.scala:
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@@ -543,25 +543,40 @@ case class RLike(left: Expression, right: Expression)
extends StringRegexExpress
case class StringSplit(str: Expression, regex: Expression, limit: Expression)
extends TernaryExpression with ImplicitCastInputTypes with NullIntolerant {
- override def dataType: DataType = ArrayType(StringType, containsNull = false)
- override def inputTypes: Seq[DataType] = Seq(StringType, StringType,
IntegerType)
+ override def dataType: DataType = ArrayType(str.dataType, containsNull =
false)
+ override def inputTypes: Seq[AbstractDataType] =
+ Seq(StringTypeBinaryLcase, StringTypeAnyCollation, IntegerType)
Review Comment:
This is to support session-level default collation. If the user changes it
and passes regex string literal, it will be interpreted as collated string. We
don't want to throw exception in such cases.
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