maropu commented on a change in pull request #29587:
URL: https://github.com/apache/spark/pull/29587#discussion_r479982337
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/types/StructType.scala
##########
@@ -641,4 +641,30 @@ object StructType extends AbstractDataType {
fields.foreach(s => map.put(s.name, s))
map
}
+
+ /**
+ * Returns a `StructType` that contains missing fields recursively from
`source` to `target`.
+ * Note that this doesn't support looking into array type and map type
recursively.
Review comment:
~Where does this limitation come?; we don't need to support this case,
or supporting it is technically difficult?~ Ah, I see. Is this an unsupported
case, right?
https://github.com/apache/spark/pull/29587/files#diff-4d656d696512d6bcb03a48f7e0af6251R106-R107
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
[email protected]
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
