fixed ticket 72, where a copied clause was using the identical bind param object thereby screwing up a generated statement that included both the original clause and the copied clause, when positional parameters were used

1 files changed, 2 insertions, 0 deletions

diff --git a/lib/sqlalchemy/sql.py b/lib/sqlalchemy/sql.py
index 666a9d18c..f88b3118f 100644
--- a/lib/sqlalchemy/sql.py
+++ b/lib/sqlalchemy/sql.py
@@ -616,6 +616,8 @@ class BindParamClause(ClauseElement, CompareMixin):
         visitor.visit_bindparam(self)
     def _get_from_objects(self):
         return []
+    def copy_container(self):
+        return BindParamClause(self.key, self.value, self.shortname, self.type)
     def typeprocess(self, value, engine):
         return self._get_convert_type(engine).convert_bind_param(value, engine)
     def compare(self, other):