davidradl commented on code in PR #26121:
URL: https://github.com/apache/flink/pull/26121#discussion_r1952921118


##########
flink-python/pyflink/table/catalog.py:
##########
@@ -1391,3 +1398,422 @@ def of(catalog_name: str, configuration: Configuration, 
comment: str = None):
         j_catalog_descriptor = 
gateway.jvm.org.apache.flink.table.catalog.CatalogDescriptor.of(
             catalog_name, configuration._j_configuration, comment)
         return CatalogDescriptor(j_catalog_descriptor)
+
+
+class Column(metaclass=ABCMeta):
+    """
+    Representation of a column in a :class:`~pyflink.table.ResolvedSchema`.
+
+    A table column describes either a :class:`PhysicalColumn`, 
:class:`ComputedColumn`, or
+    :class:`MetadataColumn`.
+
+    Every column is fully resolved. The enclosed 
:class:`~pyflink.table.types.DataType`

Review Comment:
   I am curious - does the API need to be aware of unresolved version of this? 
It could be simpler if it did not need to know about the unresolved versions.  



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