A meaningful :attr:`.QueryableAttribute.info` attribute is

added, which proxies down to the ``.info`` attribute on either
the :class:`.schema.Column` object if directly present, or
the :class:`.MapperProperty` otherwise.  The full behavior
is documented and ensured by tests to remain stable.
[ticket:2675]

1 files changed, 10 insertions, 0 deletions

diff --git a/lib/sqlalchemy/orm/interfaces.py b/lib/sqlalchemy/orm/interfaces.py
index b3f7baf0f..62cdb2710 100644
--- a/lib/sqlalchemy/orm/interfaces.py
+++ b/lib/sqlalchemy/orm/interfaces.py
@@ -209,6 +209,12 @@ class MapperProperty(_MappedAttribute, _InspectionAttr):
         .. versionadded:: 0.8  Added support for .info to all
            :class:`.MapperProperty` subclasses.
 
+        .. seealso::
+
+            :attr:`.QueryableAttribute.info`
+
+            :attr:`.SchemaItem.info`
+
         """
         return {}
 
@@ -390,6 +396,10 @@ class PropComparator(operators.ColumnOperators):
 
         return self.__class__(self.prop, self._parentmapper, adapter)
 
+    @util.memoized_property
+    def info(self):
+        return self.property.info
+
     @staticmethod
     def any_op(a, b, **kwargs):
         return a.any(b, **kwargs)