Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/20024#discussion_r159680836
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/Cast.scala
---
@@ -597,6 +619,44 @@ case class Cast(child: Expression, dataType: DataType,
timeZoneId: Option[String
"""
}
+ private[this] def codegenWriteArrayElemCode(et: DataType, ctx:
CodegenContext): String = {
--- End diff --
It returns a function to write the array elements, maybe a better name is:
`writeArrayToStringBuilderFunc`
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