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-rw-r--r--lib/sqlalchemy/dialects/postgresql/base.py3
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/sqlalchemy/dialects/postgresql/base.py b/lib/sqlalchemy/dialects/postgresql/base.py
index 612bc9223..e41e489c0 100644
--- a/lib/sqlalchemy/dialects/postgresql/base.py
+++ b/lib/sqlalchemy/dialects/postgresql/base.py
@@ -1474,6 +1474,9 @@ class INTERVAL(sqltypes.NativeForEmulated, sqltypes._AbstractInterval):
def _type_affinity(self):
return sqltypes.Interval
+ def as_generic(self, allow_nulltype=False):
+ return sqltypes.Interval(native=True, second_precision=self.precision)
+
@property
def python_type(self):
return dt.timedelta