- The :attr:`.Column.key` attribute is now used as the source of

anonymous bound parameter names within expressions, to match the
existing use of this value as the key when rendered in an INSERT
or UPDATE statement.   This allows :attr:`.Column.key` to be used
as a "substitute" string to work around a difficult column name
that doesn't translate well into a bound parameter name.   Note that
the paramstyle is configurable on :func:`.create_engine` in any case,
and most DBAPIs today support a named and positional style.
fixes #3245

1 files changed, 2 insertions, 2 deletions

diff --git a/lib/sqlalchemy/sql/elements.py b/lib/sqlalchemy/sql/elements.py
index fa9b66024..734f78632 100644
--- a/lib/sqlalchemy/sql/elements.py
+++ b/lib/sqlalchemy/sql/elements.py
@@ -1092,7 +1092,7 @@ class BindParameter(ColumnElement):
         """
         if isinstance(key, ColumnClause):
             type_ = key.type
-            key = key.name
+            key = key.key
         if required is NO_ARG:
             required = (value is NO_ARG and callable_ is None)
         if value is NO_ARG:
@@ -3335,7 +3335,7 @@ class ColumnClause(Immutable, ColumnElement):
             return name
 
     def _bind_param(self, operator, obj):
-        return BindParameter(self.name, obj,
+        return BindParameter(self.key, obj,
                              _compared_to_operator=operator,
                              _compared_to_type=self.type,
                              unique=True)