#24934: Can't drop or change unique_together index in MySql
----------------------------+--------------------
Reporter: user0007 | Owner: nobody
Type: Bug | Status: new
Component: Migrations | Version: 1.8
Severity: Normal | Keywords:
Triage Stage: Unreviewed | Has patch: 0
Easy pickings: 0 | UI/UX: 0
----------------------------+--------------------
Hello,
I'm using Django 1.8.2 and Mysql 5.6. I created model with two fields in
unique_together:
{{{
class Meta:
unique_together = ('user', 'product')
}}}
the table was created sucessfully. Later I removed unique_together:
{{{
class Meta:
pass
}}}
so Django created migration:
{{{
operations = [
migrations.AlterUniqueTogether(
name='mymodel',
unique_together=set([]),
),
]
}}}
but when i try to apply this migrattion I have got an error:
{{{
django.db.utils.OperationalError: (1061, "Duplicate key name
'myapp_mymodel_1ba366c5'")
}}}
Django is trying to create this index, instead of removed them.
The same situation is when I try to add third field to my unique_together
list:
{{{
class Meta:
unique_together = ('user', 'product', 'category')
}}}
{{{
django.db.utils.OperationalError: (1061, "Duplicate key name
'myapp_mymodel_1ba366c5'")
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/24934>
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