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-rw-r--r--lib/sqlalchemy/sql/util.py7
1 files changed, 6 insertions, 1 deletions
diff --git a/lib/sqlalchemy/sql/util.py b/lib/sqlalchemy/sql/util.py
index 944a68def..6c8ef8f5a 100644
--- a/lib/sqlalchemy/sql/util.py
+++ b/lib/sqlalchemy/sql/util.py
@@ -147,6 +147,11 @@ class Annotated(object):
)
def __init__(self, element, values):
+ # force FromClause to generate their internal
+ # collections into __dict__
+ if isinstance(element, expression.FromClause):
+ element.c
+
self.__dict__ = element.__dict__.copy()
self.__element = element
self._annotations = values
@@ -357,7 +362,7 @@ class ClauseAdapter(visitors.ReplacingCloningVisitor):
self.include = include
self.exclude = exclude
self.equivalents = equivalents or {}
-
+
def _corresponding_column(self, col, require_embedded):
newcol = self.selectable.corresponding_column(col, require_embedded=require_embedded)