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Simplified handling of DurationField values on MySQL/MariaDB.

This commit is contained in:
Sergey Fedoseev 2018-10-09 19:38:42 +05:00 committed by Tim Graham
parent e90af8bad4
commit 3957f767bb
1 changed files with 1 additions and 8 deletions
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9
django/db/backends/mysql/operations.py
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@ -1,4 +1,3 @@
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 (