maropu commented on a change in pull request #20176:
URL: https://github.com/apache/spark/pull/20176#discussion_r462636447
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/Cast.scala
##########
@@ -259,6 +259,29 @@ case class Cast(child: Expression, dataType: DataType,
timeZoneId: Option[String
builder.append("]")
builder.build()
})
+ case StructType(fields) =>
+ buildCast[InternalRow](_, row => {
+ val builder = new UTF8StringBuilder
+ builder.append("[")
Review comment:
I think we have no strong reason. In this PR, I just followed the
existing format. Looks like we can change it to `{` for consistency. cc:
@cloud-fan
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/Cast.scala
##########
@@ -259,6 +259,29 @@ case class Cast(child: Expression, dataType: DataType,
timeZoneId: Option[String
builder.append("]")
builder.build()
})
+ case StructType(fields) =>
+ buildCast[InternalRow](_, row => {
+ val builder = new UTF8StringBuilder
+ builder.append("[")
Review comment:
I think we have no strong reason. In this PR, I just followed the
existing format. Looks like we can change it to `{` for consistency (But, we
might need to update the migration doc cuz it change the casting behaivour).
cc: @cloud-fan
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