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-rw-r--r--lib/sqlalchemy/ansisql.py4
1 files changed, 1 insertions, 3 deletions
diff --git a/lib/sqlalchemy/ansisql.py b/lib/sqlalchemy/ansisql.py
index 40ea5b00a..63ee5f7fd 100644
--- a/lib/sqlalchemy/ansisql.py
+++ b/lib/sqlalchemy/ansisql.py
@@ -932,9 +932,7 @@ class ANSIIdentifierPreparer(object):
def format_column(self, column, use_table=False):
"""Prepare a quoted column name """
- # TODO: isinstance alert ! get ColumnClause and Column to better
- # differentiate themselves
- if isinstance(column, schema.SchemaItem):
+ if not getattr(column, 'is_literal', False):
if use_table:
return self.format_table(column.table, use_schema=False) + "." + self.__generic_obj_format(column, column.name)
else: