#27456: Changing the unique paramater from True to False has no effect on MySQL
--------------------------------------+------------------------
Reporter: Vadim | Owner: nobody
Type: Bug | Status: new
Component: Migrations | Version: 1.8
Severity: Normal | Keywords: mysql
Triage Stage: Unreviewed | Has patch: 0
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 0 |
--------------------------------------+------------------------
Steps to reproduce:
1. Create a model:
{{{
from django.db import models
class TestModel(models.Model):
name = models.CharField(max_length=100, unique=True)
surname = models.CharField(max_length=50)
}}}
2. makemigrations && migrate
{{{
$ ./manage.py sqlmigrate testapp 0001_initial
BEGIN;
CREATE TABLE `testapp_testmodel` (`id` integer AUTO_INCREMENT NOT NULL
PRIMARY KEY, `name` varchar(100) NOT NULL UNIQUE, `surname` varchar(50)
NOT NULL);
COMMIT;
}}}
{{{
$ cat testapp/migrations/0001_initial.py
# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from django.db import migrations, models
class Migration(migrations.Migration):
dependencies = [
]
operations = [
migrations.CreateModel(
name='TestModel',
fields=[
('id', models.AutoField(verbose_name='ID',
serialize=False, auto_created=True, primary_key=True)),
('name', models.CharField(unique=True, max_length=100)),
('surname', models.CharField(max_length=50)),
],
),
]
}}}
3. Set unique to False, makemigrations and migrate
{{{
from django.db import models
class TestModel(models.Model):
name = models.CharField(max_length=100, unique=False)
surname = models.CharField(max_length=50)
}}}
{{{
$ cat testapp/migrations/0002_auto_20161106_2004.py
# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from django.db import migrations, models
class Migration(migrations.Migration):
dependencies = [
('testapp', '0001_initial'),
]
operations = [
migrations.AlterField(
model_name='testmodel',
name='name',
field=models.CharField(max_length=100),
),
]
}}}
{{{
$ ./manage.py sqlmigrate testapp 0002_auto_20161106_2004
}}}
{{{
mysql> show create table testapp_testmodel;
+-------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Table | Create Table
|
+-------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| testapp_testmodel | CREATE TABLE `testapp_testmodel` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`name` varchar(100) NOT NULL,
`surname` varchar(50) NOT NULL,
PRIMARY KEY (`id`),
UNIQUE KEY `name` (`name`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 |
+-------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0,00 sec)
}}}
Notes:
It works well on SQLite
This bug also exists in 1.10
--
Ticket URL: <https://code.djangoproject.com/ticket/27456>
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