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-rw-r--r--lib/sqlalchemy/sql/expression.py8
1 files changed, 8 insertions, 0 deletions
diff --git a/lib/sqlalchemy/sql/expression.py b/lib/sqlalchemy/sql/expression.py
index 4eb555d4d..be870ee79 100644
--- a/lib/sqlalchemy/sql/expression.py
+++ b/lib/sqlalchemy/sql/expression.py
@@ -2178,11 +2178,19 @@ class Join(FromClause):
self._foreign_keys = util.Set()
columns = list(self._flatten_exportable_columns())
+
+ #global sql_util
+ #if not sql_util:
+ # from sqlalchemy.sql import util as sql_util
+ #self._primary_key = sql_util.reduce_columns([c for c in columns if c.primary_key], self.onclause)
+
self.__init_primary_key(columns)
+
for co in columns:
cp = self._proxy_column(co)
def __init_primary_key(self, columns):
+ # TODO !!! remove all this
global schema
if schema is None:
from sqlalchemy import schema