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-rw-r--r--lib/sqlalchemy/dialects/postgresql/pg8000.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/sqlalchemy/dialects/postgresql/pg8000.py b/lib/sqlalchemy/dialects/postgresql/pg8000.py
index cd9c545f3..6beb9fbef 100644
--- a/lib/sqlalchemy/dialects/postgresql/pg8000.py
+++ b/lib/sqlalchemy/dialects/postgresql/pg8000.py
@@ -40,7 +40,8 @@ class _PGNumeric(sqltypes.Numeric):
if self.asdecimal:
if coltype in _FLOAT_TYPES:
return processors.to_decimal_processor_factory(
- decimal.Decimal, self.decimal_return_scale)
+ decimal.Decimal,
+ self._effective_decimal_return_scale)
elif coltype in _DECIMAL_TYPES or coltype in _INT_TYPES:
# pg8000 returns Decimal natively for 1700
return None