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-rw-r--r--lib/sqlalchemy/sql/elements.py5
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/sqlalchemy/sql/elements.py b/lib/sqlalchemy/sql/elements.py
index e277b28a4..75d5368d5 100644
--- a/lib/sqlalchemy/sql/elements.py
+++ b/lib/sqlalchemy/sql/elements.py
@@ -259,7 +259,10 @@ class ClauseElement(Visitable):
return self
def _execute_on_connection(self, connection, multiparams, params):
- return connection._execute_clauseelement(self, multiparams, params)
+ if self.supports_execution:
+ return connection._execute_clauseelement(self, multiparams, params)
+ else:
+ raise exc.ObjectNotExecutableError(self)
def unique_params(self, *optionaldict, **kwargs):
"""Return a copy with :func:`bindparam()` elements replaced.