#26824: MySQL query with CONVERT_TZ is not properly formated
-------------------------------------+-------------------------------------
Reporter: truhlik | Owner: nobody
Type: Bug | Status: new
Component: Database layer | Version: 1.9
(models, ORM) |
Severity: Normal | Resolution:
Keywords: mysql, timezone | Triage Stage:
| Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
Comment (by truhlik):
Using Mysql: 5.5.49-0+deb8u1 - (Debian)
MySQL timezone definitions have been loaded properly.
Strange behavior. I pass all 6 tests in the suite, which you point. But
when I try the single SQL query, the Error appears.
I modified the code a little to see the query which Django produce.
{{{
...
with self.settings(TIME_ZONE='UTC'):
# But in UTC, the __date only matches one of them.
q = DateTimeModel.objects.filter(dt__date=d)
print q.query
self.assertQuerysetEqual(DateTimeModel.objects.filter(dt__date=d),
[repr(m1)])
}}}
and the output is this:
{{{
Using existing test database for alias 'default'...
.sSELECT `payments_datetimemodel`.`id`, `payments_datetimemodel`.`d`,
`payments_datetimemodel`.`dt`, `payments_datetimemodel`.`t` FROM
`payments_datetimemodel` WHERE
DATE(CONVERT_TZ(`payments_datetimemodel`.`dt`, 'UTC', UTC)) = 2014-03-12
....
----------------------------------------------------------------------
Ran 6 tests in 0.734s
OK (skipped=1)
}}}
Then trying to use the same query (without quotes) directly in mysql
client.
{{{
mysql> SELECT `payments_datetimemodel`.`id`, `payments_datetimemodel`.`d`,
`payments_datetimemodel`.`dt`, `payments_datetimemodel`.`t` FROM
`payments_datetimemodel` WHERE
DATE(CONVERT_TZ(`payments_datetimemodel`.`dt`, 'UTC', UTC)) = 2014-03-12;
ERROR 1054 (42S22): Unknown column 'UTC' in 'where clause'
}}}
and with quotes:
{{{
mysql> SELECT `payments_datetimemodel`.`id`, `payments_datetimemodel`.`d`,
`payments_datetimemodel`.`dt`, `payments_datetimemodel`.`t` FROM
`payments_datetimemodel` WHERE
DATE(CONVERT_TZ(`payments_datetimemodel`.`dt`, 'UTC', 'UTC')) =
2014-03-12;
Empty set (0.00 sec)
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/26824#comment:2>
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