- added literal_column() to specify a column clause that should not undergo any quoting

- straight text sent to select() added as literal_column
- fix for issue in [ticket:450]

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: