ulysses-you commented on a change in pull request #28840:
URL: https://github.com/apache/spark/pull/28840#discussion_r442706595
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/connector/catalog/LookupCatalog.scala
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@@ -155,4 +155,37 @@ private[sql] trait LookupCatalog extends Logging {
None
}
}
+
+ /**
+ * Extract catalog and function identifier from a multi-part name with the
current catalog if
+ * needed.
+ *
+ * Note that: function is only supported in v1 catalog.
+ */
+ object CatalogAndFunctionIdentifier {
Review comment:
After some thought. We have to modify the
`parseSessionCatalogFunctionIdentifier`
* since it used by v2, should return both `CatalogPlugin` and
`FunctionIdentifier`
* during resolve `UnresolvedFunc`, it's hard to decide the sql param.
Actually the sql param is not important.
And after this, we also have to update the existing code in
`ResolveSessionCatalog`. Maybe it's better to do the refactor ?
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