pg8000 fix for decimal return scale

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