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-rw-r--r--lib/sqlalchemy/dialects/postgresql/base.py4
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/sqlalchemy/dialects/postgresql/base.py b/lib/sqlalchemy/dialects/postgresql/base.py
index a6fa21f99..78ea1a8fc 100644
--- a/lib/sqlalchemy/dialects/postgresql/base.py
+++ b/lib/sqlalchemy/dialects/postgresql/base.py
@@ -240,8 +240,8 @@ class PGCompiler(compiler.SQLCompiler):
return text
def get_select_precolumns(self, select):
- if select._distinct:
- if isinstance(select._distinct, bool):
+ if select._distinct is not False:
+ if select._distinct is True:
return "DISTINCT "
elif isinstance(select._distinct, (list, tuple)):
return "DISTINCT ON (" + ', '.join(