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-rw-r--r--lib/sqlalchemy/sql/compiler.py4
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/sqlalchemy/sql/compiler.py b/lib/sqlalchemy/sql/compiler.py
index 482afb42f..29aa57faa 100644
--- a/lib/sqlalchemy/sql/compiler.py
+++ b/lib/sqlalchemy/sql/compiler.py
@@ -525,12 +525,12 @@ class TypeCompiler(util.with_metaclass(util.EnsureKWArgType, object)):
# this was a Visitable, but to allow accurate detection of
# column elements this is actually a column element
-class _CompileLabel(elements.ColumnElement):
+class _CompileLabel(elements.CompilerColumnElement):
"""lightweight label object which acts as an expression.Label."""
__visit_name__ = "label"
- __slots__ = "element", "name"
+ __slots__ = "element", "name", "_alt_names"
def __init__(self, col, name, alt_names=()):
self.element = col