Simplified handling of DurationField values on MySQL/MariaDB.
-import decimal
import uuid
from django.conf import settings
@@ -262,12 +261,6 @@ class DatabaseOperations(BaseDatabaseOperations):
def binary_placeholder_sql(self, value):
return '_binary %s' if value is not None and not hasattr(value, 'as_sql') else '%s'
- def convert_durationfield_value(self, value, expression, connection):
- # DurationFields can return a Decimal in MariaDB.
- if isinstance(value, decimal.Decimal):
- value = float(value)
- return super().convert_durationfield_value(value, expression, connection)
-
def subtract_temporals(self, internal_type, lhs, rhs):
lhs_sql, lhs_params = lhs
rhs_sql, rhs_params = rhs
@@ -275,7 +268,7 @@ class DatabaseOperations(BaseDatabaseOperations):
if self.connection.mysql_is_mariadb:
# MariaDB includes the microsecond component in TIME_TO_SEC as
# a decimal. MySQL returns an integer without microseconds.
- return '((TIME_TO_SEC(%(lhs)s) - TIME_TO_SEC(%(rhs)s)) * 1000000)' % {
+ return 'CAST((TIME_TO_SEC(%(lhs)s) - TIME_TO_SEC(%(rhs)s)) * 1000000 AS SIGNED)' % {
'lhs': lhs_sql, 'rhs': rhs_sql
}, lhs_params + rhs_params
return (
