cloud-fan commented on code in PR #50408:
URL: https://github.com/apache/spark/pull/50408#discussion_r2032711070
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sql/api/src/main/scala/org/apache/spark/sql/types/StructField.scala:
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@@ -150,10 +150,13 @@ case class StructField(
/**
* Return the default value of this StructField. This is used for storing
the default value of a
* function parameter.
+ *
+ * It is present when the column represents a UDF argument type with a
default
+ * value, such as: CREATE FUNCTION f(arg INT DEFAULT 42) RETURN ....
*/
private[sql] def getDefault(): Option[String] = {
Review Comment:
nit: shall we rename it to `getParameterDefault` to be more explicit? We can
do it in a followup PR.
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