Opened 9 months ago

Closed 9 months ago

#34895 closed Bug (duplicate)

Reverse migrations fail with mysql / mariadb with sql_safe_updates set to 1

Reported by: Divick Owned by: nobody
Component: Migrations Version: 4.0
Severity: Normal Keywords: migrations
Cc: Triage Stage: Unreviewed
Has patch: no Needs documentation: no
Needs tests: no Patch needs improvement: no
Easy pickings: no UI/UX: no


For one of the migrations when I tried deleting, it generates something like the following:

DELETE FROM `django_migrations` WHERE (`django_migrations`.`app` = 'cards' AND `django_migrations`.`name` = '0023_user_pin_code');

The problem is that column is not indexed nor is column, which leads to sql_safe_update error:

MySQLdb.OperationalError: (1175, 'You are using safe update mode and you tried to update a table without a WHERE that uses a KEY column')

I think column can be made unique to solve this issue.

The version of Django that I am using is 4.0.10.

Change History (1)

comment:1 by Mariusz Felisiak, 9 months ago

Resolution: duplicate
Status: newclosed

Duplicate of #30490.

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