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-rw-r--r--lib/sqlalchemy/databases/informix.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/sqlalchemy/databases/informix.py b/lib/sqlalchemy/databases/informix.py
index b4471df58..e98a5467e 100644
--- a/lib/sqlalchemy/databases/informix.py
+++ b/lib/sqlalchemy/databases/informix.py
@@ -407,7 +407,7 @@ class InfoCompiler(ansisql.ANSICompiler):
return ""
def __visit_label(self, label):
- if len(self.select_stack):
+ if self.select_stack:
self.typemap.setdefault(label.name.lower(), label.obj.type)
if self.strings[label.obj]:
self.strings[label] = self.strings[label.obj] + " AS " + label.name