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-rw-r--r--lib/sqlalchemy/dialects/postgresql/base.py4
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/sqlalchemy/dialects/postgresql/base.py b/lib/sqlalchemy/dialects/postgresql/base.py
index 7cb0ea7b0..0ee65651d 100644
--- a/lib/sqlalchemy/dialects/postgresql/base.py
+++ b/lib/sqlalchemy/dialects/postgresql/base.py
@@ -1520,7 +1520,9 @@ class PGCompiler(compiler.SQLCompiler):
set_parameters = dict(clause.update_values_to_set)
# create a list of column assignment clauses as tuples
- cols = self.statement.table.c
+
+ insert_statement = self.stack[-1]['selectable']
+ cols = insert_statement.table.c
for c in cols:
col_key = c.key
if col_key in set_parameters: