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Diffstat (limited to 'lib/sqlalchemy/sql/expression.py')
| -rw-r--r-- | lib/sqlalchemy/sql/expression.py | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/sqlalchemy/sql/expression.py b/lib/sqlalchemy/sql/expression.py index f3a1562c5..1c3961f1f 100644 --- a/lib/sqlalchemy/sql/expression.py +++ b/lib/sqlalchemy/sql/expression.py @@ -2155,6 +2155,8 @@ class _BindParamClause(ColumnElement): if type_ is None: self.type = sqltypes.type_map.get(type(value), _fallback_type or sqltypes.NULLTYPE) + if _fallback_type and _fallback_type._type_affinity == self.type._type_affinity: + self.type = _fallback_type elif isinstance(type_, type): self.type = type_() else: |